Uncovering the Unexpected: Rare Case of a Typical Presentation of Parathyroid Adenoma

Abstract: The incidence of primary hyperparathyroidism in India is 2.5/1000 individuals. Primary hyperparathyroidism can be caused by a non-cancerous parathyroid adenoma, hyperplasia, or, rarely, parathyroid carcinoma. Most of these patients have few or no symptoms. A correct diagnosis can be reached through clinical settings, biochemical and radiological tests, and final confirmation by histopathology of the specimen. In our case, a 75-year-old male patient with an atypical presentation of hypercalcemia presented to the hospital with complaints of nausea since 1.5 months, loss of appetite and fatigue, loss of weight, decreased sleep, and breathlessness (Grade NYHA-2) since one month, for which further evaluation was done and led to the diagnosis of primary hyperthyroidism secondary to a parathyroid adenoma. This atypical presentation of hypercalcemia and the approach in which the diagnosis was made make this case truly unique in the elderly population. Keywords: Parathyroid adenoma, atypical presentation, elderly population