Faculty Bibliography

A rare source of potentially massive lower gastrointestinal hemorrhage in women is advanced gynecologic malignancy. Such patients can develop gastrointestinal hemorrhage with or without prior pelvic irradiation, due to arteriocolic fistulas. Angiography permits the correct diagnosis and subsequent embolotherapy.

Bronchobiliary fistulas are rare, may result from infection with Echinococcus or Amebiasis, trauma, or hepatic malignancy, and present with biliptysis, the expectoration of bile. The authors present a 49-year-old woman who presented with frank biliptysis as a result of previously treated metastatic colon cancer to the liver. A hepatobiliary scan is the noninvasive diagnostic imaging test of choice for demonstration of such fistulas, and was useful in confirming the diagnosis in our patient.

We report the radiology and pathology of a pediatric patient with lymphomatoid granulomatosis (LG) and review the literature, with an emphasis on the radiological findings and on the small subset of pediatric patients with this rare condition.

Pulmonary embolism (PE) and deep venous thrombosis (DVT) are a continuum and are difficult to diagnose clinically. Combined CT venography and pulmonary angiography (CTVPA) is a single examination that combines multidetector CT pulmonary angiography (CTPA) and CT venography (CTV) of the abdomen, pelvis, and lower extremities, providing "one-stop shopping" for venous thromboembolism without additional venipuncture or i.v. contrast, and it adds only a few additional minutes to scanning time. CTVPA rapidly and accurately examines the deep veins, reveals the presence, absence, and extent of deep venous thrombosis, serves as a baseline, and helps guide patient management. Multiple investigators have reported a high degree of accuracy when CTV is compared with venous ultrasound. There are some pitfalls in image interpretation, especially with regard to mixing artifacts, and there are continuing controversies as to exactly which parts of the abdomen, pelvis, and legs should be scanned routinely, the ideal timing of CTV acquisition relative to contrast injection, and the slice thickness and gap, if any, that should be used.

We report the radiology and pathology of a patient with xanthogranulomatous cholecystitis (XC) and review the literature on this unusual condition.

There have been few reports of the CT findings of intestinal lymphangiectasia in adults, and no CT descriptions have been reported in the literature in children. We describe the CT appearance of a biopsy-proven case of primary small intestinal lymphangiectasia in a 3-year-old boy, and we will review the limited literature on the CT findings in this disorder in adults.

A ureteroinguinal hernia was demonstrated on both a Tc-99m mercaptoacetyltriglycine (MAG3) renal scan and a computed tomographic scan in an 81-year-old man with suspected urinary tract infection and a prior history of transurethral resection of the prostate. Ureteral hernias are relatively rare, although the ureteroinguinal hernia, found in elderly men on the right side, is the most common type. Ureteral hernias may be asymptomatic but can be present in patients with symptoms of obstructive uropathy.