scholarly journals Micropapillary Carcinoma in a dog: Case report

2021 ◽  
Vol 15 (3) ◽  
pp. 224-229
Author(s):  
Cristhian Rene Vargas Estrada ◽  
Bruna Fernanda Firmo ◽  
Marjury Cristina Maronezi ◽  
André de Mattos Faro ◽  
Daniele Belchior Vela ◽  
...  
Keyword(s):  
Breast Carcinoma ◽  
Survival Time ◽  
Correct Diagnosis ◽  
Shear Velocity ◽  
Cutaneous Metastasis ◽  
Biological Behavior ◽  
Micropapillary Carcinoma ◽  
Correct Treatment ◽  
Inguinal Lymphadenectomy ◽  
Average Survival

Mammary neoplasms in female dogs present a high incidence. Several histological types are observed, among them, micropapillary carcinoma is considered one of the most aggressive because it is related to vascular invasion, metastases and low survival time. Aimed to describe a case of micropapillary breast carcinoma, with cutaneous metastasis, in a dog. A canine, female, 14 years old, 8kg, not defined breed, uncastrated, nulliparous, with pseudocyesis and no contraceptives administration history was attended at the Veterinary Reproduction and Obstetrics Service from "Governador Laudo Natel” Hospital, FCAV, UNESP, Jaboticabal, presenting a breast ulcerated nodule, with one month estimated evolution. After stabilization and preoperative exams, radical unilateral mastectomy and ipsilateral axillary and inguinal lymphadenectomy were performed. Histopathologic diagnosis revealed micropapillary carcinoma and free surgical margins from neoplasm, however, there were metastasis in both lymph nodes. The tutors did not adhere to antineoplastic chemotherapy. In 60th post-surgical day, there was inflammatory reaction in the surgical scar region, with small cutaneous ulceration, where the elastogram  revealed  rigidity and shear velocity of 7.84m/s. Skin biopsy revealed metastasis of micropapillary breast carcinoma. There was progression of ulcerations, compromising animal’s welfare and its physiological activities, when on the 110th post-surgical day, it was decided to euthanize the patient.  The correct diagnosis and knowledge of tumor biological behavior are importants points to choose the correct treatment. The adjuvant chemotherapy treatment can impact on average survival time and ARFI elastography is an accurate predictor of rapid and non-invasive diagnosis of micropapillary carcinoma recurrence.

A Maximum Entropy Estimator for the Average Survival Time Differences between Two Groups

2020 ◽  
Vol 7 (2) ◽  
pp. 107-112
Author(s):  
Marian Manciu ◽  
Sorour Hosseini ◽  
Joscelyne Guzman-Gonzalez
Keyword(s):  
Survival Time ◽  
Maximum Entropy ◽  
Time Difference ◽  
Reliable Estimate ◽  
Average Survival Time ◽  
Sample Number ◽  
Time To Event Data ◽  
Entropy Estimator ◽  
Average Survival ◽  
The Difference

Background: Statistical methods commonly used in survival analysis typically provide the probability that the difference between groups is due to chance, but do not offer a reliable estimate of the average survival time difference between groups (the difference between median survival time is usually reported). Objective: We suggest a Maximum-Entropy estimator for the average Survival Time Difference (MESTD) between groups. Methods: The estimator is based on the extra survival time, which should be added to each member of the group, to produce the maximum entropy of the result (resulting in the groups becoming most similar). The estimator is calculated only from time to event data, does not necessarily assume hazard proportionality and provides the magnitude of the clinical differences between the groups. Results: Monte Carlo simulations show that, even at low sample numbers (much lower than the ones needed to prove that the two groups are statistically different), the MESTD estimator is a reliable predictor of the clinical differences between the groups, and therefore can be used to estimate from (low sample numbers) preliminary data whether or not the large sample number experiment is worth pursuing. Conclusion: By providing a reasonable estimate for the efficacy of a treatment (e.g., for cancer) even for low sample data, it might provide useful insight in testing new methods for treatment (for example, for quick testing of multiple combinations of cancer drugs).

Nasal Chondromesenchymal Hamartoma in Children

2001 ◽  
Vol 125 (3) ◽  
pp. 400-403 ◽  
Author(s):  
Chuen Hsueh ◽  
Swei Hsueh ◽  
Frank Gonzalez-Crussi ◽  
Ta-jen Lee ◽  
Jen-liang Su
Keyword(s):  
Immunohistochemical Study ◽  
Correct Diagnosis ◽  
S100 Protein ◽  
Soft Tissue Tumors ◽  
Biological Behavior ◽  
Ultrastructural Examination ◽  
Spindle Cells ◽  
Nasal Chondromesenchymal Hamartoma ◽  
Myofibroblastic Differentiation ◽  
Malignant Soft Tissue

Abstract Hamartoma in the nasal cavity of children is especially rare. Most documented cases occurred in infants, with characteristic histologic features of a mixture of various mesenchymal tissues. McDermott et al designated it nasal chondromesenchymal hamartoma in 1998, and it has since been considered a distinct clinicopathological entity. We report 2 such examples in a full-term male newborn and a 9-month-old boy, respectively. Histologically, both cases were characterized by a mixture of various mesenchymal elements, including spindle cells, collagen fibers, and irregular islands of osseous and chondroid tissue. Immunohistochemical study showed positivity to vimentin and S100 protein. Ultrastructural examination of case 1 demonstrated fibroblastic and myofibroblastic differentiation in tumor cells. There were 11 cases of nasal chondromesenchymal hamartoma in children published to date. The tumor has a benign biological behavior, and complete resection is the treatment of choice. It is apt to be misdiagnosed because of overlapping histologic features shared with a number of benign and malignant soft tissue tumors. Awareness of this entity is essential for correct diagnosis and adequate therapy.

scholarly journals MI with Non-obstructive Coronary Artery Presenting with STEMI: A Review of Incidence, Aetiology, Assessment and Treatment

2020 ◽  
Vol 15 ◽  
Author(s):  
Ying X Gue ◽  
Rahim Kanji ◽  
Sabiha Gati ◽  
Diana A Gorog
Keyword(s):  
Acute Coronary Syndrome ◽  
Coronary Artery ◽  
Correct Diagnosis ◽  
Correct Treatment ◽  
St Segment Elevation ◽  
Coronary Syndrome ◽  
Plaque Disruption ◽  
Methodical Approach ◽  
St Segment ◽  
Assessment And Treatment

MI with non-obstructive coronary artery (MINOCA) is a condition previously thought to be benign that has recently been shown to have comparable mortality to that of acute coronary syndrome with obstructive coronary disease. The heterogeneity of the underlying aetiology makes the assessment, investigation and treatment of patients with MINOCA challenging. The majority of patients with MINOCA presenting with ST-segment elevation MI generally have an underlying coronary or myocardial cause, predominantly plaque disruption or myocarditis. In order to make the correct diagnosis, in addition to the cause of the presentation, a meticulous and methodical approach is required, with targeted investigations. Stratification of patients to guide investigations that are more likely to provide the diagnosis will allow the correct treatment to be initiated promptly. In this article, the authors review the contemporary incidence, aetiology, recommended assessment and treatment of patients with MINOCA presenting with ST-segment elevation MI.

Effects of feeding frequency on life processes of the planktonic foraminifer Globigerinoides sacculifer in laboratory culture

1981 ◽  
Vol 61 (1) ◽  
pp. 257-277 ◽  
Author(s):  
A. W. H. Bé ◽  
D. A. Caron ◽  
O. R. Anderson
Keyword(s):  
Survival Time ◽  
Survival Data ◽  
Inverse Correlation ◽  
Laboratory Culture ◽  
Control Group ◽  
Feeding Frequency ◽  
Planktonic Foraminifer ◽  
Shell Size ◽  
Average Survival ◽  
Feeding Regimes

Globigerinoides sacculifer (Brady), a common planktonic foraminifer collected by SCUBA off Barbados, was maintained under six feeding regimes at constant light and temperature conditions. Five groups of 63 specimens each were fed 1-day-old Anemia at the rate of one nauplius per specimen every 1, 2, 3, 4 or 7 days. A starved control group received no Anemia. The rate of chamber formation and shell size increased proportional to the feeding frequency. However, an inverse correlation existed between survival time and feeding frequency. Normally, survival time ends with gametogenesis which terminates the life of the mother cell. Organisms fed more frequently reached maturity and underwent gametogenesis more rapidly than those fed less frequently. The average survival time of G. sacculifer in culture ranged from 7 days for the daily-fed group to 11 days for the group fed every 7 days. While the latter grew more slowly they eventually reached maturity. Starved individuals rarely formed chambers and often died without undergoing gametogenesis. Symbiotic zooxanthellae presumably prolonged survival of starved organisms. Extrapolation of survival data suggests G. sacculifer has a variable life span of 2 to 4 weeks depending on food availability.

Immunohistochemical and Clinicopathologic Characteristics of Invasive Ductal Carcinoma of Breast With Micropapillary Carcinoma Component

2005 ◽  
Vol 129 (10) ◽  
pp. 1277-1282 ◽  
Author(s):  
Mi-Jung Kim ◽  
Gyungyub Gong ◽  
Hee Jae Joo ◽  
Se-Hyun Ahn ◽  
Jae Y. Ro
Keyword(s):  
Estrogen Receptor ◽  
Epidermal Growth Factor Receptor ◽  
Growth Factor ◽  
Breast Carcinoma ◽  
Epidermal Growth Factor ◽  
Growth Factor Receptor ◽  
Invasive Breast Carcinoma ◽  
Nodal Metastases ◽  
Micropapillary Carcinoma ◽  
Epidermal Growth

Abstract Context.—A micropapillary carcinoma (MC) component is generally considered to behave aggressively. Although several reports have described the prognostic significance of MC in breast carcinomas, immunohistochemical findings of MC, especially as compared to non-MC, are rarely described. Objective.—We compared clinicopathologic and immunohistochemical findings between 38 cases of invasive breast carcinoma with an MC component (IMC) and 217 cases of invasive breast carcinoma without an MC component (NIMC). Design.—We constructed a tissue microarray from 38 cases of IMC and performed immunohistochemical stainings for cytokeratin (CK) 7, CK20, estrogen receptor, progesterone receptor, p53, c-Erb-B2, CD34, CK5, epidermal growth factor receptor, and c-Kit in both MC and non-MC components. Results.—Cases with IMC were associated with greater tumor size, more frequent lymphovascular invasion, nodal metastases, greater mean numbers of positive lymph nodes, and higher stage than those with NIMC, but were not associated with poorer survival rates. On immunohistochemistry, only p53 reactivity was statistically different between MC and non-MC components in IMC cases. Estrogen receptor positivity tended to be lower in MC than non-MC, but the difference was not significant. Most of the MCs and non-MCs in IMC cases were positive for CK7, but none of them were positive for CK20, CK5, epidermal growth factor receptor, or c-Kit. Conclusions.—Based on the frequent nodal metastases and association with higher stage found in IMC as compared with NIMC cases, as well as higher p53 positivity and lower frequency of estrogen receptor expression, MC could be considered an aggressive histologic type of breast carcinoma. In both MC and non-MC components in IMC cases, no basallike immunostaining pattern was detected.

scholarly journals MUC1 positive cutaneous metastasis with transepidermal elimination from a breast carcinoma

2013 ◽  
pp. 81
Author(s):  
Maria Croce ◽  
Amalia Luna ◽  
Maria Emilia Merino ◽  
Cecilio G. Alberdi ◽  
Martin Abba ◽  
...  
Keyword(s):  
Breast Carcinoma ◽  
Cutaneous Metastasis

Relevance of modified prognostic score for breast carcinoma on fine needle aspiration cytology in a resource-poor setting

2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 21177-21177
Author(s):  
S. A. Malami ◽  
S. M. Sahabi
Keyword(s):  
Breast Carcinoma ◽  
Fine Needle Aspiration ◽  
Fine Needle Aspiration Cytology ◽  
Needle Aspiration ◽  
Biological Behavior ◽  
Grading System ◽  
Aspiration Cytology ◽  
Fine Needle ◽  
Prognostic Group ◽  
Needle Aspiration Cytology

21177 Background: Breast cancer is the commonest malignancy in premenopausal Nigerian women in whom it is almost uniformly fatal probably due to lack of access to early diagnosis and treatment. To enhance the value of fine needle aspiration cytology, a rapid and comparatively new technique in our center, we sought to verify if it is also a cost-effective test to predict biological behavior in breast carcinoma. We developed a modified grading system to compare the cytologic features of the cases in our series with known prognostic factors (tumours size, histologic grade and axillary lymph node status) in subsequently excised tissues. Methods: Fine needle aspirates obtained in 42 patients diagnosed as ductal cell carcinoma not otherwise specified (NOS) at the UDUTH Hospital, Sokoto, Nigeria were investigated. The three cytologic features used were nuclear grade (score 1–3), cellular dyscohesion (score 1–3), and bare atypical nuclei (score 0, 1). A cytological score of 3 and below was considered a low score, and a score of 4–7 was considered a high score. We also categorized each patient according to the Nottingham Prognostic Index (NPI) into: good prognostic group (GPG), moderate prognostic group (MPG) and poor prognostic group (PPG). The cases in GPG and MPG were considered to belong to a more favourable category. Results of cytoprognostic scores were compared with the respective pathological information calculated by the NPI. Results: Eighteen of the 20 cases that had a cytologically high score were confirmed to be PPG while 2 correlated with MPG. Among the 22 cases that had cytologically low scores 14 cases were not correlated with favourable NPI index (belonged to PPG category) while the remaining 8 correlated well (MPG = 4 and GPG = 4). The overall accuracy for cytologic grading was 62% (26 out of 42 cases). Conclusion: Tumour typing on FNA material correlates with the NPI in the poor prognostic group. However, this modified cytoprognostic score seems to have doubtful promise as a prognostic factor in our group of patients with favourable NPI. The importance of each cytological feature used in this grading system will be determined by regression analysis in a larger sample size. No significant financial relationships to disclose.

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