When parathyroid adenoma meets osteopathia striata, rarest amalgam of bony dysplasia with brown tumors: a case report

Abstract

Abstract Background Osteopathia is a benign entity characterized by linear densities along the diaphysis and metaphysis of the longitudinal axes of the long bone. Parathyroid adenoma is a non-malignant parathyroid gland tumor characterized by increased parathormone levels, causing defecting calcium levels leading to multiple brown tumors, renal calculi, bone pains, polyuria, and arrhythmias in the patient. The coexistence of parathyroid adenoma with osteopathia striata has not been reported yet in the literature. To our knowledge, this is the first case of its kind. Case presentation An 18-year-old male patient presented to our institution with the complaint of genu valgum deformity in his right knee and was admitted for corrective surgery. While undergoing a preoperative evaluation, we came across multiple focal, lytic lesions in his radiographs and an atypical finding of osteopathia striata in his long bones. Further examination led us to the findings of cranial sclerosis and acro-osteolysis of distal phalanges. The tumor, whose catalyst was unclear, directed us toward an ultrasonographic analysis of the patient’s neck, leading us to a solitary parathyroid adenoma. Conclusions Radiological examinations played a very crucial role in the diagnosis of this condition. Though the reason behind osteopathia and the parathyroid lesion in this patient remains unknown, this presentation remains an exceptional and never-reported case of parathyroid adenoma and associated brown tumors in a patient with osteopathia striata.