Normal lung perfusion scan with extensive thromboembolic disease.

A 50-year-old woman with unexplained pulmonary hypertension had normal findings on six-view lung perfusion scan prior to open lung biopsy. The biopsy demonstrated old organized thrombi. The patient expired and autopsy disclosed extensive thromboembolic disease, both old and new.

Gallbladder visualization on a technetium-99m MDP bone scan.

A bone scan performed on a 54-year-old woman with metastatic breast carcinoma and concurrent cholelithiasis demonstrated intense gallbladder concentration of radionuclide.

The value of the negative radionuclide scrotal scan in the management of the acutely inflamed scrotum in children.

Torsion of the testis remains a clinical diagnosis and confirmatory testing is not required when the classic signs and symptoms are present. Conflicting laboratory data or adjunctive diagnostic studies should not dissuade the surgeon from exploration when the clinical index of suspicion is high. In those patients having equivocal clinical findings when the diagnosis of torsion is not clear-cut radionuclide scrotal imaging may be useful.