David Rochester

Diagnosis of inferior vena cava anomalies by computerized tomography

Abstract Knowledge of normal and variant vascular anatomy has become essential with increasing use of computerized tomography and ultrasound. We present three cases of IVC anomalies diagnosed by computerized tomography, including azygos continuation of the IVC and the first case of left IVC demonstrated on CT scan. The embryology of the normal and variant IVC is presented. The practical significance of these findings is discussed.

Non-Hodgkin lymphoma of ureteral wall: CT findings.

We report a case of focal ureteral wall non-Hodgkin lymphoma without contiguous or other associated abdominal abnormalities. The CT findings and the differential diagnosis are discussed.

Accessory Hemiazygos Continuation of Left Inferior Vena Cava: Ct Demonstration

The first CT description of accessory hemiazygos continuation of a left-sided inferior vena cava is presented. This venous anomaly appears as a mediastinal mass on plain chest films and may simulate an aortic dissection on CT or angiography. Careful attention to the various abnormal vascular pathways will obviate the need for further invasive testing.

CT of rhabdomyolysis associated with malignant hyperthermia and seizures.

Computed tomography evaluation in rhabdomyolysis can reveal muscle necrosis and calcification. We report the computed tomography findings in acute rhabdomyolysis, secondary to hyperthermia and seizures.

Burkitt's lymphoma of the stomach

An unusual case of American Burkitts lymphoma originating in the stomach of an elderly man is presented. Computed tomography revealed diffuse infiltration of the gastric wall by a solid tumor measuring 2.5 to 5.5 cm in thickness. Despite such bulky tumor, however, distensibility of the stomach was preserved because Burkitts lymphoma does not induce desmoplastic reaction and linitis plastica.

Computed tomography appearance of fused (horseshoe) kidney

Horseshoe kidneys occur approximately once in every 400-500 births. We present three cases of renal fusion anomalies with their computed tomography scans. In patients with little retroperitoneal fat the presence of a renal fusion anomaly can mimic a retroperitoneal mass. Horseshoe kidneys can be suspected by the characteristic anteromedial placement of the renal hilar structures and by enhancement after contrast infusion. An intravenous pyelogram will confirm the finding.

Renal failure due to bronchogenicadenocarcinoma metastatic to kidneys

A case is presented of a fifty-eight-year-old woman with bronchogenic adenocarcinoma in whom renal failure developed manifested by hypertension and azotemia. Subsequent percutaneous needle aspiration biopsy confirmed metastatic renal involvement. No etiology other than renal infiltration due to metastatic bronchogenic adenocarcinoma was found to explain the renal failure. Literature review revealed no previous reported case of metastatic bronchogenic adenocarcinoma to the kidney presenting antemortem with renal failure.

Sonographic demonstration of renal arterial calcification simulating multiple renal calculi.

A case of arterial calcification simulating renal calculi during ultrasound examination is described. The differential diagnosis of echogenic foci with acoustic shadowing is discussed.