title: A case of small cell carcinoma arising in a mature cystic teratoma of the ovary.
abstract: Malignant transformation of ovarian mature cystic teratomas is reported to occur in about 1% of cases. The most common malignant evolution is that of squamous cell carcinoma and one of the least common is that of small cell carcinoma. We report a case of distant metastasis from a small cell carcinoma arising in a mature cystic teratoma. A 28-year-old nulliparous female presented with signs of supraclavicular lymph node metastasis. This is the first known case report of lymph node metastasis as an initial sign of cancer developing in a pre-existing mature cystic teratoma. Histologically, the tumor cells had microscopic features similar to those of pulmonary small cell carcinoma. This report gives a literature review, and the histological, immunohistochemical, flow cytometric and ultrastructural features are described.
authors.affiliation: Department of Pathology, College of Medicine Chosun University, Kwangju, Korea. sclim@mail.chosun.ac.kr
authors.forename: S C
authors.initials: SC
authors.lastname: Lim
authors.forename: S J
authors.initials: SJ
authors.lastname: Choi
authors.forename: C H
authors.initials: CH
authors.lastname: Suh
mesh_terms: D000328:Adult; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D018288:Carcinoma, Small Cell / Q000000981:diagnostic imaging / Q000473:pathology* / Q000628:therapy; D005260:Female; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology; D008207:Lymphatic Metastasis; D016609:Neoplasms, Second Primary / Q000000981:diagnostic imaging / Q000473:pathology* / Q000628:therapy; D010051:Ovarian Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000628:therapy; D018714:Radiotherapy, Adjuvant; D013724:Teratoma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000628:therapy; D014057:Tomography, X-Ray Computed