A rare development of tumoral calcinosis of the ear auricle

Idiopatic Auricular Calcinosis Cutis

Calcinosis cutis is a rare disease characterized by the deposition of insoluble calcium phosphate crystals in the epidermis. Etiologically it is divided into 4 types: dystrophic, metastatic, iatrogenic and idiopathic. The most common type is the dystrophic type and the rarest idiopathic type. The pathophysiology of calcinosis cutis is not clearly known. Its definitive diagnosis is made histopathologically by showing calcium accumulation in the skin and clinically excluding other types. A pediatric patient was admitted to our clinic with a left auricular mass, and histopathological findings were diagnosed as idiopathic calcinosis cutis. Our case is presented in the light of literature because it is seen in auricula, an atypical localization of idiopathic calcinosis cutis, which is a rare type.

A case report: renal cystic tumoural calcinosis with ossification and bone marrow formation

Background

Tumoural calcinosis (TC) is a rare disorder characterized by nonneoplastic amorphous calcium deposition that tends to occur in soft tissues around the large joint. Here, we report a case of cystic TC with ossification and bone marrow formation in the kidney.

Case presentation

We report a 63-year-old woman who presented with a complaint of intermittent right lumbar pain for 2 months. Computed tomography (CT) revealed a large cystic lesion on the lateral side of the right kidney, with a circular calcified wall around the lesion, which compressed, deformed and displaced the right kidney. To relieve the symptoms of right lumbar pain, the patient underwent surgical resection of this cystic lesion without partial removal of the renal parenchyma. The pathological results further confirmed the diagnosis of cystic TC with ossification and bone marrow formation in the right kidney. No recurrence was detected 1 year after surgery.

Conclusions

The main differential diagnoses of TC in the kidney are kidney stone, renal tuberculosis, renal cyst with a calcified wall, and tumour. Patients are treated mainly by complete surgical resection of the lesion.