title: Adenocarcinoma within a paracoccygeal teratoma in an adult: report of a case.
abstract: We report an unusual case of adenocarcinomatous transformation of a paracoccygeal teratoma (PCT) in a 44-year-old woman. The patient was referred to us for surgical treatment of a growing paracoccygeal mass. The findings of a magnetic resonance imaging scan were compatible with soft tissue malignancy. Using the posterior approach, we performed complete surgical removal with coccygectomy. Histological examination of the cystic mass revealed a mature teratoma containing primary adenocarcinoma. The patient has been followed up for 7 years and is free of disease. Because prognosis depends on complete excision, we emphasize the importance of clear-margin surgery, including en bloc removal of the coccyx.
authors.affiliation: Department of Surgery B, Rabin Medical Center, Beilinson Campus, Petah Tiqva, 4900, Israel.
authors.forename: Hagit
authors.initials: H
authors.lastname: Tulchinksy
authors.forename: Ana
authors.initials: A
authors.lastname: Tovar
authors.forename: Haim
authors.initials: H
authors.lastname: Gutman
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology* / Q000601:surgery; D000328:Adult; D001707:Biopsy, Needle; D002471:Cell Transformation, Neoplastic / Q000473:pathology*; D003050:Coccyx; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D009367:Neoplasm Staging; D019637:Orthopedic Procedures / Q000379:methods; D018714:Radiotherapy, Adjuvant; D013125:Spinal Neoplasms / Q000473:pathology* / Q000601:surgery; D013724:Teratoma / Q000473:pathology* / Q000628:therapy*; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome