Prognosis and Treatment of Squamous Cell Carcinoma from a Mature Cystic Teratoma of the Ovary

https://www.gynecologiconcology-online.net/article/S0090-8258(98)95058-2/pdf

Synchronous Ovarian and Cervical Squamous Intraepithelial Neoplasia: An Analysis of HPV Status

Mature cystic teratoma (MCT) is the most common ovarian tumor Secondary malignant tumors rarely arise in MCTs, and squamous cell carcinoma (SCC) is the most common form of such tumors MCT-derived SCC in situ (CIS) is mostly found together with invasive SCC; it is seldom detected alone A 44-year-old woman with breast cancer was found to have a left ovarian cyst (size >8 cm) before treatment She underwent bilateral salpingo-oophorectomy, and frozen biopsy showed MCT with focal proliferation of squamous epithelium and mild atypism However, definitive pathologic diagnosis confirmed CIS arising in MCT In addition, germline BRCA 1/2 test and human papillomavirus test of tumor tissue yielded negative results This report is the first case of its kind in Korea Our report can aid in clinical decision making and serve as a basis for follow-up studies on this rare type of CIS arising in MCT

/pdf/a-rare-case-of-squamous-cell-carcinoma-in-situ-arising-in-3gw1d10d0u.pdf

A rare case of squamous cell carcinoma in situ arising in mature cystic teratoma

RESUMEN Objetivo: Presentar dos casos con malignizacion de teratoma maduro de ovario. Con clinica inicial inespecifica y aumento progresivo de la circunferencia abdominal. En ambos el ultrasonido y la TAC de abdomen revelaron imagenes de aspecto tumoral por lo que se realizaron otros estudios, no identificando enfermedad a distancia. La biopsia definitiva de la intraoperatoria del anexo derecho e izquierdo respectivamente de cada caso, concluyo adenocarcinoma bordeline mucinoso y adenocarcinoma borderline seroso en un teratoma maduro de ovario. El estadio clinico fue IIIC y recibieron quimioterapia adyuvante. Ambos se mantienen libres de enfermedad.

/pdf/malignizacion-de-teratoma-maduro-de-ovario-o3r2tcqrle.pdf

Malignización de teratoma maduro de ovario

Background: Squamous carcinoma-in-situ (CIS) within a benign cystic teratoma is exceptionally rare, particularly in the absence of an adjacent invasive squamous component Most of the few reported cases of CIS without invasive carcinomas occur in postmenopausal women and are usually incidental histopathologic findings Case: A 35-year-old, gravida 1, para 1001, woman underwent exploratory laparotomy and bilateral ovarian cystectomies for bilateral ovarian dermoid cysts They were excised and, via histopathology, were confirmed to be benign cystic teratomas Six months later, the patient had pelvic pain and had a 7-cm left adnexal cyst She underwent laparoscopic oophorectomy The final diagnosis was invasive squamous-cell carcinoma of the ovary A re-review of the slides of the bilateral cystectomies showed a minute focus of CIS in the right ovary that was opposite to the newer invasive carcinoma p16 immunostaining was negative Results: There was no evidence of malignancy or dysplasia in the se

Carcinoma-in-Situ in a Benign Cystic Teratoma of the Ovary: A Possible Precursor of Invasive Squamous-Cell Carcinoma of the Ovary

Mature cystic teratoma is a benign neoplasm, but malignant transformation of one component may occur in 2% of cases. Although very different types of carcinomas may be arise from mature cystic teratoma, invasive squamous cell carcinoma is the most frequent type of malignancy found, comprising about 80% of all malignancies arising from dermoid tumours. Although invasive squamous cell carcinoma is relatively frequent, it is surprising that so few cases of squamous cell carcinoma in situ in mature cystic teratoma have been reported. We describe a case of squamous cell carcinoma in mature cystic teratoma without an invasive component.

Squamous cell carcinoma in situ arising in ovarian mature cystic teratoma

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Squamous cell carcinoma in situ arising in ovarian mature cystic teratoma