A case of organized scrotal hematocele with high serum CA19-9 level.

A 67 year-old male consulted our department for examination a painless left scrotal mass accompanied by a continuously high serum carbohydrate antigen 19-9 level (CA19-9, 563.2 IU/ml). The patient underwent radical orchiectomy oof the mass. The histopathological diagnosis was an organized hematocele, and left testicular tissue was found in the cyst wall. There was no evidence of malignancy in the cyst wall or cyst contents, and immunohistochemical analysis showed no CA19-9-positive cells. However, the CA19-9 level lowered to the normal range immediately after surgery. The patient's CA19-9 level has remained normal, with no recurrence of tumor to date. Considering the clinical course, we suspected the resected mass to have been the cause of the high serum CA19-9 level, and to our knowledge, this is the first case report of organized hematocele in the scrotum with a high CA19-9 level.