Jonathan D. Samet

Colonic Endometriosis Mimicking Colon Cancer on a Virtual Colonoscopy Study: A Potential Pitfall in Diagnosis

Colonic endometriosis has been reported in the literature to mimic colon cancer. Patients can present with symptoms almost identical to colon cancer. We present an exemplary case of a woman who was found to have a mass on conventional colonoscopy. Virtual colonoscopy was instrumental in characterizing the obstructive sigmoid mass. A biopsy of the mass revealed sigmoid endometriosis.

Cronkhite-Canada Syndrome: Gastric Involvement Diagnosed by MDCT

Chronkhite-Canada is a rare nonfamilial polyposis syndrome that usually presents as chronic malabsorption in adults. We present a case of a-73-year old woman with chronic gastrointestinal bleeding and malnutrition. On CT imaging she was found to have massive gastric polyps, which on biopsy was most consistent with Cronkhite-Canada syndrome.

MRI characterization of brown adipose tissue under thermal challenges in normal weight, overweight, and obese young men

To implement quantitative Dixon magnetic resonance imaging (MRI) methods for brown adipose tissue (BAT) characterization at inactive and cold‐activated states in normal weight, overweight, and obese subjects. The hypotheses are that MRI characteristics of BAT would differentiate between nonobese and obese subjects, and activation of BAT in response to thermal challenges that are detected by MRI would be correlated with BAT activity measured by positron emission tomography / computed tomography (PET/CT).

Invasive gastric mucormycosis: CT findings

Mucormycosis is an uncommon fungal infection primarily seen in immunocompromised patients. We present a patient whose hospital course was rapidly complicated by invasive mucormycosis, which caused his death. Computed tomography (CT) was very helpful in characterizing the extent of involvement and directing clinical management.

Melorheostosis mimicking synovial osteochondromatosis.

Melorheostosis is an uncommon, sporadic, sclerosing bone lesion that may affect the adjacent soft tissues. It has been associated with many entities such as osteopoikilosis, soft tissue vascular malformations, bone and soft tissue tumors, nephrotic syndrome, segmental limb contractures, osteosarcoma, desmoid tumor, and mesenteric fibromatosis. Synovial osteochondromatosis is a benign neoplasia of the hyaline cartilage presenting as nodules in the subsynovial tissue of a joint or tendon sheath. The intra-articular extension of melorheostosis mimicking synovial osteochondromatosis has not been reported before. In this article, the authors describe an unusual case mimicking synovial chondromatosis arising as a result of melorheostosis and their characteristic imaging findings.

Sonographic evaluation of uncommonly assessed upper extremity peripheral nerves: anatomy, technique, and clinical syndromes

Targeted ultrasound of the median, ulnar, and radial nerves is a well-established technique for suspected upper extremity peripheral neuropathy. However, sonographic imaging of the brachial plexus and smaller peripheral nerve branches is more technically difficult and the anatomy is less familiar to many radiologists. As imaging techniques improve, many clinicians refer patients for imaging of previously less-familiar structures. In addition, some patients may present with injuries that could involve local neurovascular structures. Finally, patients presenting with isolated peripheral neuropathies may be referred for perineural injections with local anesthetic for diagnostic purposes, or steroid for therapeutic reasons. This requires sonologists to have a firm understanding of the courses of these nerves and the surrounding anatomic landmarks that can be used to accurately identify and characterize them. We discuss clinical syndromes referable to specific peripheral nerve branches in the upper extremity, the relevant anatomy, and sonographic technique.

Imaging of Football (Soccer) Injuries

Soccer is the world’s most popular sport, engaging hundreds of millions of participants each year. As a physically demanding contact sport, injuries occur rather frequently. Injuries range from the common and relatively benign low-grade muscle strains to potentially career-ending ligamentous injuries. At times, the nature of the injury or degree of debility requires further assessment with diagnostic imaging. Through a structured approach focused on injury epidemiology, relevant anatomy, mechanism, and appearance on medical imaging, the radiologist can gain familiarity with the common and important injuries experienced by soccer players and in turn assist the player and referring clinician toward the goal of appropriate treatment and timely return to play.

Diverticulitis complicated by fistulous communication of sigmoid colon with anterior sacral meningocele in a patient with Marfan syndrome.

Rare in the general public, dural ectasia is a common finding in patients with Marfan syndrome. Complications are not frequent but include constipation, urinary retention, and meningitis. Presented here is a case of bacterial meningitis secondary to fistulous communication between a sacral meningocele and sigmoid colon in the setting of diverticulitis.

Dehiscence of coronary artery graft presenting as a right breast mass

Coronary artery anastomotic dehiscence is a rare complication following aortic root repair in Marfans disease. In this patient who presented several years after surgery with mediastinal and chest wall hematoma, gated IV contrast enhanced cardiac CT was able to noninvasively localize left main coronary artery anastomotic dehiscence as the source of bleeding.