DOI: https://doi.org/10.36347/sjmcr.2026.v14i02.019

Pages: 254-256

We received a mass for histopathological examination from the upper right thigh in a 55 years old female patient presented with a hard mass over the thigh for the last 10 years. It was Painless Slow Growing swelling with no significant history of connective tissue disorder. Laboratory parameters including serum calcium and phosphorus level were within normal limits. Grossly mass was firm, gray white nodular tissue measuring 3.5x2x2cm. Greyish white areas were seen on the cut section. On microscopic examination, the calcified mass showed histopathological features of basophilic, finely granular and amorphous deposits in the subcutaneous tissue and dermis.There were presence of few foreign body type multinucleated giant cells. Some areas showed mature osteoids. We diagnosed the case as idiopathic calcinosis cutis with focal ossification by clinical, biochemical and histopathological examination. Idiopathic calcinosis cutis is extremely rare and the upper part of thigh is a very rare site for idiopathic calcinosis cutis. Diagnosis of this is very challenging because other soft tissue neoplasms mimic the same features. We confirmed the case by a special stain, von kossa which confirms the presence of calcium salts.