Endocrine Abstracts

Ectopic mediastinal parathyroid adenoma is a rare cause of primary hyperparathyroidism (PHPT), which is reported in 1-1.5% of patients. We present you a case of a 22-year old male, who was suffering from severe itchiness which significantly interferes with his daily activities of life. His laboratory results were suggestive of PHPT (Table 1). His initial scans, including Technetium-99m (Tc-99m) Sestamibi (Mibi) did not reveal any abnormality. Subsequently, increase of PTH leve...

Neuroendocrine tumors (NETs) of the breast are very rare. They represent less than 1% of breast carcinomas. It is important to differentiate metastatic neuroendocrine neoplasia from primary neuroendocrine neoplasia of the breast. Histopathological misinterpretation of a breast NET is common. In a study of 18 NET cases that metastasized to the breast, it was found that 62% of these tumors originated from the gastrointestinal tract and 28% from the lung. Forty-four percent of th...