Vomiting and abdominal pain in a woman with diabetes.

A CT scan of this patient's abdomen led us to an unusual and life-threatening diagnosis.

Progressive kidney failure as the sole manifestation of extrapulmonary sarcoidosis.

Sarcoidosis is a chronic multisystem disorder characterized by an accumulation of T lymphocytes and mononuclear phagocytes, non-caseating epitheliod granulomas and derangement of normal tissue architecture in affected organs. Sarcoidosis can affect any organ system, however approximately 90% of patients with sarcoidosis have pulmonary, lymph node, cutaneous or ocular manifestations. Renal involvement in sarcoidosis is rare and clinically significant renal dysfunction even less common.

Unusual CT and MR Imaging Characteristics of Splenic Lymphoma.

Lymphoma is the most common malignancy of the spleen. The imaging features of splenic lymphoma are nonspecific and mostly lymphomas present as a diffusely enlarged spleen. Focal lesions are described but remain of low density or intensity on CT or MRI, respectively.