scholarly journals Subchondral Osteoid Osteoma of a Metatarsal Bone: An Uncommon Variant in an Unusual Location

2020 ◽  
Vol 2 ◽  
pp. 140-143
Author(s):  
Abhishek Shet ◽  
D. S. Grewal ◽  
Saurabh Maheshwari ◽  
K. Uday Bhanu
Keyword(s):  
Osteoid Osteoma ◽  
Bone Tumors ◽  
Rare Case ◽  
Metatarsal Bone ◽  
Imaging Modalities ◽  
Histopathological Analysis ◽  
Imaging Features ◽  
Age Group ◽  
Skeletal Neoplasms ◽  
Difficult Cases

Osteoid osteoma (OO) is a benign bone-forming lesion leading to classical symptoms in the form of pain that aggravates during the night and is relieved by the treatment with salicylates. It constitutes 10% of benign skeletal neoplasms and is seen most often in males between the age group of 7 and 25 years. We report a rare case of subchondral OO of a metatarsal bone with unusual imaging features. This case illustrates the limitations of various imaging modalities in the diagnosis of bone tumors and the need for biopsy and histopathological analysis in difficult cases.

scholarly journals Malignant Rhabdoid Tumor of the Mediastinum: A Case Report and Literature Review

2019 ◽  
Vol 9 ◽  
pp. 7
Author(s):  
Wing Ki Ng ◽  
Boon Ping Toe ◽  
Hin Yue Lau
Keyword(s):  
Case Report ◽  
Literature Review ◽  
Rare Case ◽  
Rhabdoid Tumor ◽  
Malignant Rhabdoid Tumor ◽  
Imaging Features ◽  
Age Group ◽  
Pediatric Age ◽  
Pediatric Age Group ◽  
Aggressive Tumor

Malignant rhabdoid tumor (MRT) of the mediastinum is an aggressive tumor that is extremely rare. To date, only 24 cases of the mediastinal MRT have been reported in adults and 9 cases in the pediatric age group under the age of 18 years. We report a rare case of such tumor and review the literature on its clinical and imaging features as well as its treatment and prognostic outcomes.

Atypical Osteoid Osteoma of sacral region in pediatric age group: a case report

2017 ◽  
pp. 28-31
Author(s):  
Shashi Sharma ◽  
Sakshi Dewan ◽  
Naveen Bhardwaj ◽  
Mir Aziz ◽  
Shilpa Singh ◽  
...  
Keyword(s):  
Case Report ◽  
Osteoid Osteoma ◽  
Age Group ◽  
Pediatric Age ◽  
Sacral Region ◽  
Pediatric Age Group ◽  
Group A

scholarly journals Early CT features of COVID-19 pneumonia, association with patients’ age and duration of presenting complaint

2021 ◽  
Vol 52 (1) ◽  
Author(s):  
Reem M. EL Kady ◽  
Hosam A. Hassan ◽  
Tareef S. Daqqaq ◽  
Rania Makboul ◽  
Hanan Mosleh Ibrahim
Keyword(s):  
Pleural Effusion ◽  
Ground Glass Opacity ◽  
Ct Imaging ◽  
Older Age ◽  
Ground Glass ◽  
Imaging Features ◽  
Age Group ◽  
Patient Age ◽  
Atypical Features ◽  
Patient Âgé

Abstract Background Coronavirus disease (COVID-19) is a respiratory syndrome with a variable degree of severity. Imaging is a vital component of disease monitoring and follow-up in coronavirus pulmonary syndromes. The study of temporal changes of CT findings of COVID-19 pneumonia can help in better understanding of disease pathogenesis and prediction of disease prognosis. In this study, we aim to determine the typical and atypical CT imaging features of COVID-19 and discuss the association of typical CT imaging features with the duration of the presenting complaint and patients’ age. Results The lesions showed unilateral distribution in 20% of cases and bilateral distribution in 80% of cases. The lesions involved the lower lung lobes in 30% of cases and showed diffuse involvement in 58.2% of cases. The lesions showed peripheral distribution in 74.5% of cases. The most common pattern was multifocal ground glass opacity found in 72.7% of cases. Atypical features like cavitation and pleural effusion can occur early in the disease course. There was significant association between increased number of the lesions, bilaterality, diffuse pattern of lung involvement and older age group (≥ 50 years old) and increased duration of presenting complaint (≥ 4 days). There was significant association between crazy-paving pattern and increased duration of presenting complaint. No significant association could be detected between any CT pattern and increased patient age. Conclusion The most common CT feature of COVID-19 was multifocal ground glass opacity. Atypical features like cavitation and pleural effusion can occur early in the course of the disease. Our cases showed more extensive lesions with bilateral and diffuse patterns of distribution in the older age group and with increased duration of presenting complaint. There was a significant association between crazy-paving pattern and increased duration of presenting complaint. No significant association could be detected between any CT pattern and increased patient age.

scholarly journals Osteoid Osteoma of the Atlas in a Boy: Clinical and Imaging Features–A Case Report and Review of the Literature

2020 ◽  
Author(s):  
Adelaide Valluzzi ◽  
Salvatore Donatiello ◽  
Graziana Gallo ◽  
Monica Cellini ◽  
Antonino Maiorana ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Osteoid Osteoma ◽  
Soft Tissues ◽  
Tissue Reaction ◽  
Imaging Features ◽  
Review Of The Literature ◽  
Resonance Imaging ◽  
Radiological Findings ◽  
First Case ◽  
Upper Cervical

AbstractOsteoid osteoma is a benign osteoblastic tumor, quite uncommon in the spine. We report a case of an osteoid osteoma involving the atlas in a 6-year-old boy, who presented with suboccipital pain and torticollis. Initial radiological findings were ambiguous as magnetic resonance imaging showed mainly edema of upper cervical soft tissues. The subsequent computed tomography depicted a lesion of left lamina of C1. As conservative treatment failed, the lesion was surgically resected and the patient became pain free. To our knowledge, this is the first case of osteoid osteoma involving the atlas associated with abnormal soft tissue reaction reported in literature.

scholarly journals Clinical and radiological imaging as prognostic predictors in COVID-19 patients

2021 ◽  
Vol 52 (1) ◽  
Author(s):  
Maha Ibrahim Metwally ◽  
Mohammad Abd Alkhalik Basha ◽  
Mohamed M. A. Zaitoun ◽  
Housseini Mohamed Abdalla ◽  
Hanaa Abu Elazayem Nofal ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
Old Age ◽  
Fatal Outcome ◽  
Age Groups ◽  
Lower Lobe ◽  
Chest Ct ◽  
Imaging Features ◽  
Age Group ◽  
Significant Relation ◽  
Ct Features

Abstract Background Since the announcement of COVID-19 as a pandemic infection, several studies have been performed to discuss the clinical picture, laboratory finding, and imaging features of this disease. The aim of this study is to demarcate the imaging features of novel coronavirus infected pneumonia (NCIP) in different age groups and outline the relation between radiological aspect, including CT severity, and clinical aspect, including age, oxygen saturation, and fatal outcome. We implemented a prospective observational study enrolled 299 laboratory-confirmed COVID-19 patients (169 males and 130 females; age range = 2–91 years; mean age = 38.4 ± 17.2). All patients were submitted to chest CT with multi-planar reconstruction. The imaging features of NCIP in different age groups were described. The relations between CT severity and age, oxygen saturation, and fatal outcome were evaluated. Results The most predominant CT features were bilateral (75.4%), posterior (66.3%), pleural-based (93.5%), lower lobe involvement (89.8%), and ground-glass opacity (94.7%). ROC curve analysis revealed that the optimal cutoff age that was highly exposed to moderate and severe stages of NCIP was 38 years old (AUC = 0.77, p < 0.001). NCIP was noted in 42.6% below 40-year-old age group compared to 84% above 40-year-old age group. The CT severity was significantly related to age and fatal outcome (p < 0.001). Anterior, centrilobular, hilar, apical, and middle lobe involvements had a significant relation to below 90% oxygen saturation. A significant negative correlation was found between CT severity and oxygen saturation (r = − 0.49, p < 0.001). Crazy-paving pattern, anterior aspect, hilar, centrilobular involvement, and moderate and severe stages had a statistically significant relation to higher mortality. Conclusion The current study confirmed the value of CT as a prognostic predictor in NCIP through demonstration of the strong relation between CT severity and age, oxygen saturation, and the fatal outcome. In the era of COVID-19 pandemic, this study is considered to be an extension to other studies discussing chest CT features of COVID-19 in different age groups with demarcation of the relation of chest CT severity to different pattern and distribution of NCIP, age, oxygen saturation, and mortality rate.

scholarly journals A rare case of a medullary, multifocal lesion in the distal radius

JRSM Open ◽  
2017 ◽  
Vol 8 (7) ◽  
pp. 205427041771039
Author(s):  
Birol Aktas ◽  
Burak Ozturan ◽  
Bulent Kilic ◽  
Murat Demiroglu ◽  
Korhan Ozkan
Keyword(s):  
Distal Radius ◽  
Osteoid Osteoma ◽  
Rare Case

In multifocal findings, the possibility of multifocal osteoid osteomas should be considered and this case helps us to be attentive for the unusual radiographical presentation of osteoid osteoma.

scholarly journals Osteoid Osteoma of Cuboid Bone- A Rare Cause of Chronic Foot Pain in Childhood –A Case Report

2020 ◽  
Vol 9 (4) ◽  
pp. 1-4
Author(s):  
Sunny Chaudhary ◽  
V Abdusamad ◽  
Aman Verma ◽  
Varun Garg ◽  
R K Siddharth ◽  
...  
Keyword(s):  
Osteoid Osteoma ◽  
Blood Parameters ◽  
Age Group ◽  
Benign Bone Tumor ◽  
Foot Pain ◽  
Good Clinical Outcome ◽  
Foot Bones ◽  
Pediatric Age Group ◽  
Cuboid Bone ◽  
Inflammatory Drugs

Chronic foot pain in pediatric age group is less common. The usual differential diagnosis may vary from musculoskeletal injury to serious diseases such as osteomyelitis. Benign bone tumor such as osteoid osteoma of foot is exceedingly rare in this age group. Here we present a rare case of osteoid osteoma of cuboid mimicking osteomyelitis. Patient was managed conservatively by Non-steroidal Anti-inflammatory drugs (NSAIDs) with good clinical outcome. Osteoid osteoma of foot bones should be kept in mind in cases with normal blood parameters.

Abstract 147: Outcomes of the Stroke Thromboembolism Registry of Imaging and Pathology: A Multicenter International Study

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Waleed Brinjikji ◽  
Sean Fitzgerald ◽  
David F Kallmes ◽  
Kennith Layton ◽  
Ricardo Hanel ◽  
...  
Keyword(s):  
Inverse Correlation ◽  
Categorical Variables ◽  
Histopathological Analysis ◽  
Large Artery ◽  
Imaging Features ◽  
Continuous Variables ◽  
Imaging Findings ◽  
Clinical Registry ◽  
Stroke Etiology ◽  
Platelet Content

Background: We performed a multicenter prospective clinical registry across 11 centers to study the association between histopathological characteristics of retrieved clots and imaging, stroke etiology and clinical outcomes. Materials and Methods: Following IRB approval at the 11 centers, patients were enrolled in the STRIP registry. All retrieved emboli were sent for histopathological analysis with H&E and MSB staining. Demographic variables, comorbidities, stroke etiology, imaging findings and procedural details were collected for each case. We studied the association between clot histopathology and imaging findings, stroke etiology and and revascularization outcomes. Student’s t-test was used for continuous variables and chi-squared testing for categorical variables. Results: To date, 1022 patients have been included. There was a significant correlation between platelet rich clots and the absence of hyperdensity on non-contrast CT [p=0.321, p=0.003) and a significant inverse correlation between the percentage of platelets and mean HU on NCCT (p=-0.243, p=0.025). The proportion of platelet-rich clots (55.0% versus 21.2%, p=0.005) and the percentage of platelet content (22.1% versus 13.9%, p=0.03) was significantly higher in patient with large artery atherosclerosis compared to those with a cardioembolic etiology. There was no correlation between RBC density, WBC density, fibrin density or platelet density and revascularization outcomes with stent-retrievers. However, we have found that with aspiration alone, patients with platelet rich clots are less likely to be fully revascularized (i.e. TICI 2c/3) than non-platelet rich clots (OR=0.36, 95%CI=0.12-0.81, P<.0001). Meanwhile, patients with RBC rich clots are more likely to be completely revascularized with aspiration alone than those with RBC poor clots (OR=2.71, 95%CI=1.25-3.24, P=0.02). Conclusions: Interim analysis of the STRIP registry suggests that the platelet content of a clot may be the most revealing factor in determining a clot’s etiology, imaging features and revascularization outcome. Platelet rich clots are less dense on NCCT, are associated with a large artery atherosclerosis source and are less likely to be completely revascularized with aspiration alone.

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