Bizarre Parosteal Osteochondromatous Proliferation of the Humerus with Radiological Findings: A Case Report

Bizarre parosteal osteochondromatous proliferation (BPOP) is a rare, benign bone disease that primarily affects the metacarpals and metatarsals.We describe a 17-year-old male teenager with proximal humeral BPOP.It is a trabeculated osteolytic lesion on radiological examination.An excisional biopsy confirmed the diagnosis.Very few cases of BPOP in the long bones have been documented.It is an extension that emerges from the bone's cortical surface and is exophytic.Because the lesion was discovered in a rare location-the proximal diaphysis of the case is being reported.The gold standard for diagnosis is still the combination of radiographic and histological findings.