ABSTRACT
Primary malignant melanoma arising from the ovarian mature cystic teratoma is extremely rare, with only 31 cases have been described in the literature. It is one of the rarest forms of malignant transformation of ovarian mature cystic teratoma and usually develops unilaterally after menopause. Recently, we experienced a case of primary malignant melanoma arising from ovarian mature cystic teratoma in 71-year-old woman. The diagnosis was confirmed by positive immunohistochemical results of S-100 protein and HMB 45. Here we report the rare case with review of literature.
Subject(s)
Aged , Female , Humans , Melanoma , Menopause , S100 Proteins , TeratomaABSTRACT
OBJECTIVE: This study is to determine serum carbohydrate antigen (CA) 19-9 levels in ovarian mature cystic teratoma (MCT) as a possible differential diagnostic tool. METHODS: The study group was composed of 201 patients who underwent removal of ovarian MCT and pathologically confirmed at Yonsei University Medical Center from January 2001 to July 2005. All of them were tested for serum CA19-9 levels before operation. Their data was compared with routine gynecologic evaluation group who showed normal serum CA19-9 level. Statistical analysis was carried out with t-test and Pearson correlation by SPSS version 12.0. RESULTS: Serum CA19-9 level was significantly elevated in the patients with ovarian MCT (p=0.011). Serum CA19-9 level and size of MCT showed positive correlation (p=0.009). Moreover, postoperative serum CA19-9 level showed significant decrease, compared to preoperative level (p=0.007). CONCLUSION: Serum CA19-9 can be used as an effective method for differential diagnosis of ovarian MCT, and it is proper to be used as a postoperative follow-up test.
Subject(s)
Humans , Academic Medical Centers , Diagnosis, Differential , Follow-Up Studies , TeratomaABSTRACT
Ovarian tumors in patients with Turner's syndrome are extremely rare. Turner syndrome occurs in 1 of 4000 to 10,000 live births, giving an approximate incidence of 1 to 2,500 live female births. Approximately half of the patients with Turner syndrome have "pure" 45,X cells in peripheral blood lymphocytes. Thirty to forty percents of Turner syndrome patients present mosaicism: 10-15% of the total group are 45,X/46,XX and 2 to 5% are 45,X/46,XY. In 45,X/46,XY Turner syndrome, the risk of developing a tumor is as high as 15-25%, with the possible development of dysgerminoma or gonadoblastoma. Recently, we experienced a case of a very rare left ovarian mature cystic teratoma in a 45,X/46,XX Turner syndrome, so report with a brief review of literature.