Published: 2011 Apr
Issue: 5(4) :: Pages: 25-31

   

Abstract: Umbilical concretion is a rarely encountered benign entity. Concretions typically form within an umbilical cleft which is unusually deep and consist of keratinaceous and sebaceous material. Lack of attention to umbilical hygiene usually plays a role in their formation. Concretions are generally asymptomatic and may only present clinically when complicated by inflammation or infection. Their appearance on imaging studies may be problematic for the radiologist given their rarity, particularly in the setting of a known or suspected intra-abdominal malignancy.

Published: 2011 Apr
Issue: 5(4) :: Pages: 1-9

   

Abstract: Isomerism or Heterotaxy syndromes are rare multifaceted congenital anomalies with multi-system involvement. Grouped under the broad category of Situs Ambiguous defects, these often pose diagnostic difficulties due to their varied and confusing anatomy. Since patients rarely survive into adulthood due to cardiovascular complications, the etiology and natural history of such conditions are not fully understood. Imaging provides the most accurate non invasive method for diagnosis and thereby, prognosis in such cases. We present a case of right sided Isomerism with complex cardiac anomalies in a 17 year old adolescent, who presented with dysphagia as one of the main complaints. Multi modality imaging demonstrated the intricate abnormalities in vital systems.

Published: 2011 Apr
Issue: 5(4) :: Pages: 19-24

   

Abstract: A case of xanthogranulomatous cholecystitis is presented with a brief review of its sonographic and magnetic resonance features. These imaging features are also compared to those seen in gallbladder adenomyomatosis and gallbladder carcinoma. While there are many overlapping imaging findings in these entities, it is important to recognize distinguishing characteristics so a correct surgical approach is chosen. Laparoscopic cholecystectomy attempted with existing xanthogranulomatous cholecystitis has an increased surgical complication rate compared to open cholecystectomy and often necessitates intraoperative conversion to open cholecystectomy.

Published: 2011 Apr
Issue: 5(4) :: Pages: 32-40

   

Abstract: Accurate localization of areas of increased metabolic activity on PET only imaging can be challenging. Fusion of PET with CT imaging provides anatomic detail which aids in localization of functional information. As a result, the overall sensitivity and specificity of information provided by PET or CT alone is improved with combined PET/CT resulting in improved diagnosis and patient management. We report a case of an unexpected emergent finding of urinary bladder perforation on PET/CT to stress the importance of accurately interpreting the anatomic and functional data. To our knowledge, diagnosis of bladder perforation on PET/CT has not been previously reported in the literature. Failure to recognize such complications may lead to adverse outcomes.

Published: 2011 Apr
Issue: 5(4) :: Pages: 10-18

   

Abstract: Intracranial dermoid cysts are rare tumors derived from ectopic epithelial cells. They are slow-growing benign entities, but can cause significant morbidity through compression of neurovascular structures and, rarely, rupture into the subarachnoid space. We present a rare case of a spontaneously ruptured intracranial dermoid cyst presenting as new onset seizures due to chemical meningitis caused by dissemination of fat droplets.