Invasive Micropapillary Carcinoma of the Uterine Cervix: Case Report of a Rare Entity

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Invasive micropapillary carcinoma (IMPC) is a rare subtype of adenocarcinoma found in many organs. Only 1 case of IMPC of the uterine cervix has been reported. We report a rare case of IMPC in the uterine cervix. A 61-yr-old woman presented to our hospital for vaginal bleeding and abdominal pain. A papillary tumor was found in the uterine cervix. Cervical cytology revealed abnormal cells suggesting carcinoma in situ and adenocarcinoma. A follow up biopsy revealed adenocarcinoma. She underwent radical hysterectomy and bilateral adnexectomy. Histologically, carcinoma in situ and IMPC were found in the uterine cervix. Lymphatic infiltration was present in the cerix and in the right cardinal ligament. A pelvic lymph node metastasis was also identified. Clinical FIGO stage was IIb and pathologic stage was pT2bN1M0. Postoperative positron emission tomography-computed tomography revealed paraaortic lymph node metastasis. She is alive with disease 2 yr 9 mo after surgery. Positive p16 immunostaining and high-risk human papilloma virus in situ hybridization revealed human papilloma virus infection. Interleukin-17 was expressed in the tumor cells which might be related to the extensive neutrophilic infiltration and tumor progression. This is the first case report in which interleukin-17 expression is observed in the tumor cells of IMPC.

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