The U.S. NRC and the ADR process learning experiences.

This article discusses the regulations and requirements of the U.S. Nuclear Regulatory Commission pertaining to the practice of nuclear medicine.

Adrenocortical neoplasms in children: radiologic-pathologic correlation.

Primary neoplasms of the adrenal cortex are rare in children and differ significantly in epidemiology, clinical characteristics, and biologic features from their counterparts in adults. In children, the inclusive term adrenocortical neoplasm is applied because adrenal adenoma and adrenal carcinoma may be difficult to distinguish histopathologically. Pediatric adrenocortical neoplasms typically occur before 5 years of age, affect young girls more commonly than boys, and are associated with hemihypertrophy and Beckwith-Wiedemann and Li-Fraumeni syndromes.

Parathyroid hyperplasia, thymic carcinoid and pituitary adenoma detected with technetium-99m-MIBI in MEN type I.

We report a case of a 57-yr-old woman with history of multiple endocrine neoplasia type I (MEN I). A 99mTc-sestamibi scan demonstrated a hyperplastic parathyroid gland, a large anterior mediastinal mass and a pituitary adenoma during a study done to evaluate recurrent hyperparathyroidism. The importance of this case is that much of the nonparathyroid pathology in patients with MEN I syndrome may be detected with this one study.

Parathyroid adenomas: accurate detection and localization with Tc-99m sestamibi SPECT.

Purpose: To evaluate the ability to detect and localize parathyroid adenomas with technetium-99m sestamibi single photon emission computed tomography (SPECT).

Materials And Methods: Forty-seven adult patients underwent Tc-99m sestamibi SPECT. Early (15-30 minutes after injection) and delayed (2-4 hours after injection) images were acquired.