Breast Imaging Findings of Microcalcifications in Ductal Carcinoma in Situ and Their Correlations with Pathological and Biological Features

2021 ◽  
Vol 18 (4) ◽  
Author(s):  
Eun Ji Lee ◽  
Yun-Woo Chang
Keyword(s):  
Breast Imaging ◽  
Ductal Carcinoma ◽  
Nuclear Grade ◽  
Negative Group ◽  
Her2 Positive ◽  
Ki 67 ◽  
Positive Group ◽  
Biological Features ◽  
Group 3 ◽  
Group 2

Background: Mammography (MMG) is the primary screening tool for breast cancer, as microcalcifications are the most common MMG finding in ductal carcinoma in situ (DCIS). The use of high-frequency transducers facilitates the visualization of calcifications on ultrasonography (USG), especially in patients with dense breasts and cancer symptoms. Although a correlation has been reported between the imaging features of DCIS and pathological features, few studies have focused on multiple imaging modalities. Objectives: To evaluate the correlation of DCIS microcalcifications in breast imaging with pathological and biological features. Patients and Methods: The MMG and USG findings of 125 lesions detected in 123 patients, diagnosed with pure DCIS, were retrospectively reviewed according to the breast imaging-reporting and data system (BI-RADS). The USG and comparable MMG findings of microcalcifications were divided into three groups: group 1 (MMG negative, USG negative), group 2 (MMG positive, USG negative), and group 3 (MMG positive, USG positive). The pathological findings (nuclear grade and comedo necrosis) and biological features [estrogen (ER) positive group, human epidermal growth factor receptor 2 (HER2) positive group, triple negative group, and Ki-67 index] were compared with the MMG and USG features using Chi-square test. Results: Microcalcifications were observed on MMG in 83 (66.4%) DCIS lesions. Positive microcalcifications on MMG were significantly associated with a high nuclear grade (P = 0.001) and comedo necrosis (P = 0.001). Positive microcalcifications on MMG were significantly associated with ER negativity (P = 0.023), HER2 positivity (P = 0.002), and increased Ki-67 index (P = 0.001). There were 62 lesions (49.6%) without microcalcifications on USG (group 1 and group 2), while there were 63 (50.4%) lesions with microcalcifications on USG (group 3). Positive microcalcifications on MMG were significantly associated with ER-negative group (P = 0.023), HER2-positive group (P = 0.002), and increased Ki 67 index (P = 0.001). Conclusion: Based on the present results, DCIS microcalcifications detected via imaging were significantly associated with poor prognostic pathological factors, such as a high nuclear grade and comedo necrosis, as well as poor prognostic biological factors, including ER negativity, HER2 positive group, and a high Ki-67 index.

scholarly journals VIVAX MALARIA;

2017 ◽  
Vol 24 (06) ◽  
pp. 859-864
Author(s):  
Sikandar Hayat Khan ◽  
Muhammad Farooq
Keyword(s):  
Matched Control ◽  
Hematological Parameters ◽  
Negative Group ◽  
Positive Group ◽  
Group 3 ◽  
Group 2 ◽  
Set Up ◽  
Post Hoc ◽  
Age And Sex ◽  
Group 1

Background: The primary health care physician is usually perplexed withregards to selection of initial therapy for patients presenting with fever. Some degrees ofhematological changes do exist in most patients with malaria. How often these changes doexist with malaria in our set up? And whether these changes are due to associated fever oractually resulting because of malaria. Objective: 1-To measure the frequency of abnormalhematological changes in malaria patients in our set up. 2-To compare the hematologicalparameters among subjects with laboratory proven malaria, fever but no malaria diagnosisand healthy controls. Design: Cross-sectional analysis. Place and duration of study: Thisstudy was carried out from May 2010 to Dec- 2010 at department of medicine PNS SHIFA, anddepartments of pathology PNS SHIFA and RAHAT, Karachi. Subjects and methods: Subjectswith history of fever and a clinical suspicion of malaria were recruited from primary physician’sOPD along with healthy age and sex-matched control. First, the frequencies of various abnormalfindings in hematological parameters were measured in subjects diagnosed to have malaria.Later, group-1: [Malaria (Laboratory positive) (n=74)], Group-2: [Fever (Laboratory negative)(n=104)] and group-3: [Age and sex matched controls (n=54)] were evaluated by one wayANOVA followed by post-hoc comparisons for significant differences among groups. Bloodcomplete picture were measured by automated hematology analyzer (Specifications: CELTAC- alpha, MEK-6410 K). Malaria parasite presence was confirmed by both slide examinationtechnique and immune-chromatographic (ICT) testing. Main outcome measures-Hemoglobin,white blood cells (WBC), platelets, PDW, % neutrophil. Results- 21.62 % cases from malariahad anemia, while the occurrence of leucopenia was 62.16%. This leukpenia was associatedwith relative neutrophil excess (63.51%). Thrombocytopenia was the most consistent findingamong our studied subjects (97.30%). The difference between the three groups were significantfor platelets [Group-1, Malaria (Laboratory positive) group= 86.42 (95%CI: 78.43-94.41)][Group 2, Fever (Laboratory negative) group = 192.47 (95%CI: 177.69-207.25)] and (Group-3,Age and sex matched control group=278.89 (95%CI: 254.16-303.62)] {p<0.001}, and WBC[Group-1, Malaria (Laboratory positive) group= 5.55 (95%CI: 5.08-6.01)] [Group 2, Fever(Laboratory negative) group = 6.68 (95%CI: 6.14-7.20)] and (Group-3, Age and sex matchedcontrol group=8.78 (95%CI: 8.01-9.55)] {p<0.001}. The results for % neutrophil and PDW werealso significant, but post-hoc comparison did not show significant differences between groupsthus differentiating a case of malaria from non-malaria fever or control. Conclusion: Malariadue to Plasmodium vivax is associated with thrombocytopenia and leucopenia in our set up.Moreover, the associated hematological parameters including % neutrophil and PDW may helpin augmenting a clinical diagnosis of malaria.

Invasive ductal carcinoma mammographic findings: Correlation with age, breast composition and tumor size

2021 ◽  
pp. 1-5
Author(s):  
Federico Cerimele ◽  
Corrado Tagliati ◽  
Fabio Salvatori ◽  
Silvia Baldassarre ◽  
Antonietta Di Martino ◽  
...  
Keyword(s):  
Tumor Size ◽  
Breast Imaging ◽  
Ductal Carcinoma ◽  
Multinomial Logistic Regression ◽  
Age Groups ◽  
Lesion Size ◽  
Architectural Distortion ◽  
Invasive Ductal Breast Carcinoma ◽  
Group 3 ◽  
Group 2

BACKGROUND/OBJECTIVE: The aim of this study was to identify the mammographic findings associated with malignancy in different age groups, taking into account breast composition (BC) and lesion size. METHODS: Preoperative mammograms of 1023 invasive ductal carcinomas were retrospectively evaluated. According to the American College of Radiology Breast Imaging Reporting and Data System, cancer mammographic findings were classified as mass, calcifications, architectural distortion and asymmetry, and breasts were assessed as non-dense (A or B BC) and dense (C or D BC). Patient cohort was subdivided into three age groups (group 1: <50 years of age; group 2: between 50 and 69; group 3: ≥70 years of age). RESULTS: Significant results of multinomial logistic regression were the association between mass and non-dense breast (p < 0.0001) and the association between mass and tumor size larger than 15 mm (p = 0.0049). CONCLUSIONS: Mass finding of invasive ductal breast carcinoma is associated with breast composition and tumor size.

Progesterone and estrogen receptors: opposing prognostic indicators in meningiomas

2006 ◽  
Vol 105 (2) ◽  
pp. 163-173 ◽  
Author(s):  
Svetlana Pravdenkova ◽  
Ossama Al-Mefty ◽  
Jeffrey Sawyer ◽  
Muhammad Husain
Keyword(s):  
Estrogen Receptors ◽  
De Novo ◽  
Negative Group ◽  
Positive Group ◽  
Receptor Status ◽  
Histopathological Findings ◽  
Er Positive ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Object The preponderance of progesterone receptors (PRs) and the scarcity of estrogen receptors (ERs) in meningiomas are well known. The expression of PRs may relate to tumor grade and recurrence. Cytogenetic abnormalities are associated with aggressive behavior, recurrence, and progression. In this study, the authors focus on the prognostic implications of hormone receptors in meningiomas to help determine the clinical and biological aggressiveness of tumors and their correlations with cytogenetic abnormalities. Methods Two hundred thirty-nine patients with meningiomas were separated into three groups. Group 1 (PR-positive group) comprised patients whose meningiomas displayed expression of PRs alone. Group 2 (receptor-negative group) included patients whose lesions did not have receptors for either progesterone or estrogen. Group 3 (ER-positive group) included patients whose tumors displayed expression of ERs. Clinical and histological findings, proliferative indices, tumor recurrence, and cytogenetic findings were analyzed by performing the Fisher exact test. Compared with the receptor-negative (Group 2) and ER-positive (Group 3) groups, the PR-positive group (Group 1) had a statistically significant lower proliferative index and a smaller number of patients in whom there were aggressive histopathological findings or changes in karyotype. In Groups 1, 2, and 3, the percentages of cases with aggressive histopathological findings were 10, 31, and 33%, respectively; the percentages of cases with chromosomal abnormalities were 50, 84, and 86%, respectively; and the percentages of cases in which there initially was no residual tumor but recurrence was documented were 5, 30, and 27%, respectively. A statistically significant increase in the involvement of chromosomes 14 and 22 was identified in receptor-negative and ER-positive de novo meningiomas, when compared with the PR-positive group. Abnormalities on chromosome 19 were statistically significantly higher in receptor-negative meningiomas than in PR-positive tumors. Conclusions The expression of the PR alone in meningiomas signals a favorable clinical and biological outcome. A lack of receptors or the presence of ERs in meningiomas correlates with an accumulation of qualitative and quantitative karyotype abnormalities, a higher proportional involvement of chromosomes 14 and 22 in de novo tumors, and an increasing potential for aggressive clinical behavior, progression, and recurrence of these lesions. Sex hormone receptor status should routinely be studied for its prognostic value, especially in female patients, and should be taken into account in tumor grading. The initial receptor status of a tumor may change in progression or recurrence of tumor.

Correlation between Ki-67 Expression and Hemodynamics of Contrast-Enhanced Ultrasound in Patients with Breast Infiltrative Ductal Carcinoma

2018 ◽  
Vol 84 (6) ◽  
pp. 856-861 ◽  
Author(s):  
Rui Du ◽  
Hao Zhang ◽  
Weiwei Shu ◽  
Baoding Chen ◽  
Yuefeng Li ◽  
...  
Keyword(s):  
Ductal Carcinoma ◽  
Contrast Enhanced Ultrasound ◽  
Negative Group ◽  
Ki 67 ◽  
Positive Group ◽  
Time To Peak ◽  
Peak Intensity ◽  
Contrast Enhanced ◽  
Infiltrative Ductal Carcinoma ◽  
Positive Groups

Breast cancer causes great threats to public health worldwide. The aim of this study was to investigate the correlation between Ki-67 expression and the hemodynamics of contrast-enhanced ultrasound (CEUS) in patients with infiltrative ductal carcinoma (IDC). CEUS was performed on 109 masses in 85 IDC cases before resection. Based on the immunohistochemical staining on the antigen Ki-67, the masses were divided into negative group, weakly positive group, positive group, and strong-positive group. Significant statistical differences were noticed in time to peak, arrive intensity, and peak intensity in the positive groups compared with the negative group. Compared with the positive groups, the negative group showed significant statistical differences in arrive intensity and peak intensity. The antigen Ki-67 was positively correlated with arrived intensity, intensity changes, and rising curve's slope. In contrast, it was negatively correlated with arrived time, time to peak, and continuous time. The hemodynamic parameters of CEUS were correlated with the expression of antigen Ki-67. On this basis, Ki-67 is an effective supplement to the diagnosis of IDC.

Telomerase Expression Predicts Unfavorable Outcome in Osteosarcoma

2004 ◽  
Vol 22 (18) ◽  
pp. 3790-3797 ◽  
Author(s):  
Robert P. Sanders ◽  
Rachid Drissi ◽  
Catherine A. Billups ◽  
Najat C. Daw ◽  
Marcus B. Valentine ◽  
...  
Keyword(s):  
Mrna Expression ◽  
Primary Tumor ◽  
Progression Free Survival ◽  
Outcome Analysis ◽  
Negative Group ◽  
Primary Tumors ◽  
Free Survival ◽  
Positive Group ◽  
Alternative Lengthening ◽  
Group 3

Purpose Osteosarcoma is distinct from most cancers in that the majority of osteosarcomas lack telomerase expression and use the alternative lengthening of telomeres (ALT) mechanism to maintain telomeres. Laboratory studies suggest that compared with ALT, telomerase expression is associated with increased tumor aggressiveness. We evaluated the clinical significance of telomerase expression in human osteosarcoma. Patients and Methods Fifty-six osteosarcomas from 51 patients treated at St Jude Children's Research Hospital between 1982 and 2003 were evaluated for telomerase enzyme activity, mRNA expression of the catalytic component of telomerase (TERT), and presence of the ALT pathway. Results Outcome analysis was based on TERT mRNA expression in the primary tumor samples from 44 patients. Fourteen primary tumors expressed TERT mRNA (32%; eight TERT only, six TERT and ALT) and 30 did not express TERT mRNA (68%; 29 ALT, one no ALT). Progression-free survival (PFS) was inferior in the TERT-positive group compared with the TERT-negative group (3-year estimates, 21.4% ± 9.5% v 63.7% ± 11.1%; P = .014). Likewise, overall survival was inferior in the TERT-positive group compared with the TERT-negative group (3-year estimates, 42.9% ± 12.2% v 70.0% ± 9.9%; P = .031). Among 31 patients with nonmetastatic disease at diagnosis, PFS was lower in the TERT-positive group compared with the TERT-negative group (3-year estimates, 33.3% ± 13.6% v 72.0% ± 11.5%; P = .092). Conclusion Telomerase expression in primary tumor samples is associated with decreased PFS and OS in patients with osteosarcoma. Additional studies are warranted to better define the clinical utility of this molecular marker.

scholarly journals Health-related quality of life and work productivity in UK patients with HER2-positive breast cancer: a cross-sectional study evaluating the relationships between disease and treatment stage

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Mark Verrill ◽  
Andrew M. Wardley ◽  
Jenny Retzler ◽  
Adam B. Smith ◽  
Catherine Bottomley ◽  
...  
Keyword(s):  
Work Productivity ◽  
Cross Sectional Study ◽  
Her2 Positive ◽  
Activity Impairment ◽  
Cross Sectional ◽  
Related Quality ◽  
Health Related ◽  
Group 3 ◽  
Group 2

Abstract Background The impact of different disease stages and treatment for human epidermal growth factor 2 positive (HER2-positive) breast cancer (BC) on work productivity and health-related quality of life (HRQoL) is poorly understood. Methods This was a UK cross-sectional study of 299 adult patients with HER2-positive early or metastatic BC (NCT03099200). Productivity was assessed using the work productivity and activity impairment scale; HRQoL was measured using EuroQol-5 Dimensions-5 levels (EQ-5D-5L), and Functional Assessment of Cancer Therapy Breast (FACT-G and -B) instruments. Three balanced patient groups were recruited: (1) early BC on treatment post-surgery, (2) early BC after completion of adjuvant treatment, (3) during metastatic BC treatment. Between-group comparisons were performed using an analysis of variance. Results Group 1 comprised 89 patients, Group 2, 108 and Group 3, 102. Age, ethnicity and comorbidities were similar across groups. Patients in Group 3 reported more often being unable to work (significant Bonferroni adjusted p < 0.003). Proportions of employed patients were 50.6%, 50.9% and 27.5% in Groups 1, 2 and 3, respectively. For patients in part-time employment, the number of hours worked was significantly higher in Group 2 patients versus Group 3 (p = 0.002). Group 2 also had significantly lower levels of work absenteeism and overall work impairment compared with Group 1 (p < 0.001). Patients in Group 3 reported worse health utility scores (p ≤ 0.002), moderate or worse problems in the EQ-5D-5L self-care and usual activity domains (p ≤ 0.001), and lower HRQoL as assessed by FACT summary scores (p < 0.001 for FACT-B and -G) than Groups 1 and 2. Poorer HRQoL was significantly associated with higher work impairment (p < 0.001), with the strongest relationships being observed between activity impairment and HRQoL (Pearson’s r: 0.67). Conclusions Metastatic disease and treatment of HER2-positive BC adversely impacted on work productivity and HRQoL. The results of this study support the idea that being able to delay or prevent the metastatic recurrence of BC, for example by extending the time patients are in remission or at early stage of BC, has wider benefits in terms of patient productivity and HRQoL.

Molecular markers relating to malignant progression in Grade II astrocytoma

2009 ◽  
Vol 110 (4) ◽  
pp. 709-714 ◽  
Author(s):  
Wei-Ying Yue ◽  
Su-Huan Yu ◽  
Shi-Guang Zhao ◽  
Zhong-Ping Chen
Keyword(s):  
Molecular Markers ◽  
Histological Analysis ◽  
Malignant Progression ◽  
Labeling Index ◽  
Ki 67 ◽  
Recurrent Tumors ◽  
Grade Ii ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Object Astrocytoma may progress rapidly or remain stable for many years. To clarify whether molecular characteristics could be prognostic factors, several cell cycling–associated molecular alterations in the diffuse astrocytoma have been investigated. Methods Thirty-three patients in whom WHO Grade II astrocytoma had been initially diagnosed were assigned to 1 of 3 groups. Group 1 consisted of 10 patients with malignant progression; the tumor had recurred within 5 years and histological analysis had confirmed that the tumor progressed to Grade III or IV. Group 2 consisted of 10 patients in whom there was no malignant progression; the tumor recurred within 5 years, but histological analysis confirmed that the tumor remained at Grade II. Group 3 consisted of 13 patients who did not experience recurrence within 5 years. Expression of Ki 67, TP53, p27, and p21 was examined using immunohistochemical analysis for the tumor samples obtained during the first and second (in recurrent cases) surgeries. Exons 5, 7, and 8 of TP53 were scanned by DNA sequencing. Results The Ki 67 labeling index expression was significantly higher in Group 1 (even though it was similar between initial and recurrent tumors) than that of Group 3 (p < 0.05). However, there was no difference between Group 2 (both initial and recurrent tumors) and Group 3. The TP53 protein accumulation was also higher in Group 1 than in Group 2 or 3 (p < 0.05); a difference in TP53 expression was not found between Groups 2 and 3. The p27 and p21 was expressed in all cases, but no predictive values were found. The p53 mutation was found only in 6 cases in Group 1. Conclusions Overexpression of TP53, TP53 mutation, and Ki 67 labeling index could be molecular markers in astrocytomas predicting malignant progression.

scholarly journals Value of digital mammography in predicting lymphovascular invasion of breast cancer

2019 ◽  
Author(s):  
Zhuangsheng Liu ◽  
Ruqiong Li ◽  
Keming Liang ◽  
Junhao Chen ◽  
Xiangmeng Chen ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Confidence Interval ◽  
Digital Mammography ◽  
Lymphovascular Invasion ◽  
Subcutaneous Fat ◽  
Negative Group ◽  
Interstitial Edema ◽  
Ki 67 ◽  
Positive Group ◽  
Independent Risk Factors

Abstract Background: To use digital mammography, a more popular imaging tool, for predicting lymphovascular invasion(LVI) in breast cancer patients preoperatively. Methods: 122 cases of invasive ductal carcinoma diagnosed between May 2017 and September 2018 were collected, which were divided into positive group (n=42) and negative group (n=80) according to the presence or absence of LVI. Results: The differences of these variables(childbearing history, miscarriage history, other breast diseases history, nipple discharge, breast cancer marker CA153, age, ER, PR, HER-2, E-CAD, P53, Ki-67) between LVI positive group and the LVI negative group were not statistically significant, except that of Ki-67 (P=0.012). For the image features of digital mammography, the differences of interstitial edema (P=0.013) and skin thickening (P=0.000) between LVI positive group and negative groups were statistically significant. The differences of other imaging patterns, that is, fibroglandular tissue density, size , solitary/multiple, mass shape, mass margin , subcutaneous fat, axillary adenopathy and so on, between the two groups were not statistically significant. Multiple factor analysis shows that, there are three independent risk factors for predicting LVI occurrence: interstitial edema (OR = 12.610, 95% confidence interval CI: 1.061, 149.922, P=0.045), subcutaneous fat (OR=0.081, 95% confidence interval CI: 0.012, 0.645, P =0.017) and skin thickening (OR=9.041, 95% confidence interval CI: 2.553, 32.022, P=0.001). Conclusion: Interstitial edema, blurring of subcutaneous fat layer, and skin thickening were independent risk factors for predicting LVI occurrence. When applying these three imaging patterns together, the specificity of LVI prediction was as high as 98.8%.

scholarly journals Chemosensitivity based on pathologic complete response in very young patients with ER-positive breast cancer: a large, multicenter, observational study

2020 ◽  
Author(s):  
Joohyun Woo ◽  
Se Jeong Oh ◽  
Jeong-Yoon Song ◽  
Byung Joo Chae ◽  
Jung Eun Choi ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Neoadjuvant Chemotherapy ◽  
Pathologic Complete Response ◽  
Young Patients ◽  
Complete Response ◽  
Negative Group ◽  
Ki 67 ◽  
Positive Group ◽  
Er Positive ◽  
Positive Breast Cancer

Abstract Background In estrogen receptor (ER)-positive breast cancer, young age is associated with poor prognosis. Several reports have suggested hormonal mechanism as the possible reason. Conversely, very young patients respond better to chemotherapy, and chemotherapy is less effective in ER-positive tumors than in ER-negative tumors. The authors tried to evaluate the chemoinsensitivity of very young patients with ER-positive breast cancer by pathologic complete response (pCR) after neoadjuvant chemotherapy excluding the effect of endocrine treatment to the extent possible.Methods We collected individual patient data from 1992 to 2013 from the Korean Breast Cancer Society (KBCS). Total 1,048 ER-positive and 797 ER-negative patients aged <50 years who had been treated with neoadjuvant chemotherapy were included for analysis. We compared the pathologic complete response (pCR) rate between patients aged <35 years with ER-positive tumors and the other groups.Results The proportion of very young patient aged <35years was 14% in ER-positive group and 16.8% in ER-negative group. Although most chracteristics of tumors according to age were comparable in both groups, tumors with high Ki-67 expression were more common in patients under 35years of age than in those aged 35-49years in both groups (P = 0.001). Breast conservation rates were not significantly different according to age in two groups (44.2% vs. 46.8% in ER-positive group, 55.2% vs. 48.0% in ER-negative group). pCR rates of both breasts and axilla were not significantly different according to age in ER-positive group (P=0.71) but significantly better in patients aged <35years in ER-negative group (P=0.009). After adjusting for confounding variables, young patients maintained the higher probability of pCR than older patients in ER-negative tumors. However, the pCR rate did not differ according to age in ER-positive tumors. Conclusions Chemotherapy response based on pCR rates was not better in young patients (<35 years) with ER-positive breast cancer than in older premenopausal patients with ER-positive advanced breast cancer. Young age cannot be a predictive factor of chemosensitivity in ER-positive breast cancer. Different biological characteristics such as high Ki-67 proliferative index should be considered.Trial registration: retrospectively registered

scholarly journals Neonates and Young Infants With COVID-19 Presented With Sepsis-Like Syndrome: A Retrospective Case Controlled Study

2021 ◽  
Vol 9 ◽  
Author(s):  
Manasik Hassan ◽  
Ahmed Khalil ◽  
Samar Magboul ◽  
Ohood Alomari ◽  
Tasneim Abdalla ◽  
...  
Keyword(s):  
Nasal Congestion ◽  
Laboratory Data ◽  
Age Groups ◽  
Controlled Study ◽  
Control Group ◽  
Negative Group ◽  
Retrospective Case ◽  
Positive Group ◽  
Young Infants ◽  
Group 2

Objective: We aimed to describe the presentations and biochemical characteristics of sepsis-like syndrome (SLS) in infants aged &lt;2 months who tested positive for SARS-CoV-2-in comparison to those in the same age group who were SARS-CoV-2-negative.Background: COVID-19 presents with a spectrum of manifestations, and children seem to have a favorable clinical course compared to other age groups. Limited data are available for symptomatic infants.Design: This was a case-controlled single-institution retrospective study on infants aged &lt;2 months admitted with SLS between 1 April 2020 and 1 July 2020. These infants were divided into 2 groups: Group 1 (n = 41), infants with positive nasal/oropharyngeal swab polymerase chain reaction (PCR) results for SARS-CoV-2; and Group 2 (n = 40), infants with negative PCR results for SARS-CoV-2 (control group). Details between both groups were reviewed and analyzed.Outcome: The clinical and laboratory data for SARS-CoV-2 -positive infants who presented with SLS may differ from those for infants with SLS who tested negative for SARS-CoV-2.Results: Overall, 105 infants were admitted with clinical sepsis: 41 were SARS-CoV-2-positive, and 64 were negative. Fever was present in 90% of SARS-CoV-2-positive infants vs. 80% of the negative group. SARS-CoV-2-positive infants had a higher incidence of nasal congestion and cough (39 and 29%, respectively) compared to the SARS-CoV-2-negative group (20 and 3%, respectively) (P &lt; 0.05). Poor feeding and hypoactivity occurred more frequently in the SARS-CoV-2-negative group (58 and 45%, respectively) than in the SARS-CoV-2-positive group (22 and 12%, respectively, P &lt; 0.004). Sepsis workup, including lumbar puncture, was performed in 67% and partial septic workup was performed in 23% of the SARS-CoV-2-positive infants. Full sepsis workup was performed in 92% of the SARS-CoV-2-negative group. Cerebrospinal fluid (CSF) cultures were negative in 26/27SARS-CoV-2-positive infants (an infant had Klebsiella meningitis). All the SARS-CoV-2-negative infants had negative CSF cultures. Blood culture was negative in both groups. Urine culture showed bacterial growth in 9 infants with SARS-CoV-2-negative sepsis.Conclusions: Our study showed that respiratory symptoms (cough and nasal congestion) were more prominent in the SARS-CoV-2-positive group, while poor feeding and hypoactivity were reported more frequently in the negative group. However, the clinical differentiation between COVID-19 disease and sepsis in such age groups is difficult. Therefore, screening young infants with SLS for SARS-CoV-2- is necessary during this pandemic.

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