Parathyroid adenomas are common lesions and are considered to be the cause of most of the primary hyperparathyroidism cases. We report the case of a 73 year-old man who presented with a primary hyperparathyroidism. Clinical and histological explorations revealed the presence of an isolated parathyroid tumor containing exclusively clear cells and devoid of malignancy. This is the second reported case of clear cell parathyroid adenoma. Thus, in spite of its low occurrence, this diagnosis must be considered after rejection of the most frequent parathyroid clear cell hyperplasia and parathyroid carcinoma, or depending of the location, clear cell thyroid tumor and clear cell renal carcinoma metastasis.
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