Ovarian stone. A case report.

BACKGROUND

To our knowledge, ovarian calcification and ossification involving the whole ovary with images that mimic stone formations have not been reported before.

METHODS

A 42-year-old woman presented with severe abdominal pain. Plain abdominal radiography showed a well-defined, calcified mass, 4 x 5 cm, located in the pelvis. Physical examination showed a right adnexal mass accompanied by severe pain and tenderness while lifting. Transvaginal ultrasound showed an ill-defined mass with acoustic comet tail. Computed tomography demonstrated a well-defined mass on the right adnexa, 4 x 5 cm, with an extensively calcified shell. Surgical exploration revealed an enlarged, ovoid, pale brown ovary, which looked exactly like an ovary made of stone. The pathologic findings were compatible with a benign chocolate cyst with extensive calcification and ossification. The pelvic pain resolved completely after the surgery.

CONCLUSIONS

Though the cause of this unique case remains unknown, torsion with subsequent infarction of an ovarian endometrioma was suggested. Complete excision was the treatment of choice.