Clear cell adenoma of parathyroid: a misleading unusual lesion

Parathyroid adenomas are common lesions and are considered to be the cause of most of the primary hyperparathyroidism cases. Ne report the case of a 7 3 year-old man who presented with a primary hyperparathyroidism. Clinical a nd histological explorations revealed the presence of an isolated parathyro id tumor containing exclusively clear cells and devoid of malignancy. This is the second reported case of clear cell parathyroid adenoma. Thus, in spi te of its low occurrence, this diagnosis must be considered after rejection of the most frequent parathyroid clear cell hyperplasia and parathyroid ca rcinoma, or depending of the location, clear cell thyroid tumor and clear c ell renal carcinoma metastasis.