Faculty Bibliography

A case of pulmonary embolism caused by breakdancing is reported. There was no clinical suspicion of pulmonary embolism

Pulmonary embolism is diagnosed by a mismatched perfusion-ventilation lung scan. The probability is increased further when there is an associated 'hot spot' in the perfusion study caused by focal pulmonary edema

We report a bone scan finding of bilaterally and symmetrically increased uptake at the lateral orbital rims in a patient with disseminated Hodgkin's disease. Computerized axial tomography (CT) demonstrated lacrimal gland enlargement, presumably due to infiltration by Hodgkin's disease. Both the radionuclide bone scan and CT findings, as well as the other physical and radiographic manifestations of Hodgkin's disease, resolved after chemotherapy. Infiltration by Hodgkin's lymphoma is a rare cause of lacrimal gland enlargement. We believe that this pattern of uptake on a routine bone scan should alert the physician to possible lacrimal gland disease, which could then be more definitively evaluated by CT examination

A case of antibiotic-associated pseudomembranous colitis is presented in which the Gallium scan was the first diagnostic modality to alert the clinicians to the existence of an inflammatory bowel process. The mechanism of localization of the radiopharmaceutical in inflammatory bowel disease is discussed. Although colonoscopy is far more specific and should be the first-line diagnostic tool used in assessing the presence of pseudomembranous colitis, Gallium scanning may have a role in the follow-up of treatment and in cases of relapse

Marked retention of radioxenon by the skeletal structures during a routine ventilation scan is described. Xenon uptake by bones occurs largely in the intraosseous fat. Augmented uptake in this case may be related to the patient's prolonged steroid therapy