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A case of endometrioid adenocarcinoma originating from the serous surface of the small intestine

Natsuko Makihara, Ichiro Fujita, Hiroo Souda, Takahisa Yamamoto, Terumasa Sashikata, Toru Mukohara, Tetsuo Maeda
  • Natsuko Makihara
    Department of Obstetrics and Gynecology, Saiseikai Hyogo Prefectural Hospital, Japan | natsumacky86@yahoo.co.jp
  • Ichiro Fujita
    Department of Obstetrics and Gynecology, Saiseikai Hyogo Prefectural Hospital, Japan
  • Hiroo Souda
    Department of Obstetrics and Gynecology, Saiseikai Hyogo Prefectural Hospital, Japan
  • Takahisa Yamamoto
    Department of Surgery, Saiseikai Hyogo Prefectural Hospital, Japan
  • Terumasa Sashikata
    Division of Diagnostic Pathology, Saiseikai Hyogo Prefectural Hospital, Japan
  • Toru Mukohara
    Department of Hematology and Oncology, Kobe University Hospital, Japan
  • Tetsuo Maeda
    Department of Radiology, Kobe University Hospital, Japan

Abstract

Malignant transformation of endometriosis has been extensively described in the literature. However, extragonadal endometrioid adenocarcinoma, either de novo or arising from malignant transformation of endometriosis, is rare. The present case report describes a patient with endometrioid adenocarcinoma on the serous surface of the small intestine. A 25- year-old female with no history of endometriosis was referred to our hospital with an intrapelvic tumor. An internal examination, ultrasound, and magnetic resonance imaging revealed a round mass approximately 80 mm in diameter; however, identification of the affected organ was difficult. Because we could not rule out malignancy based on the non-specific radiologic findings, laparotomy was performed. A mass with ileal adhesions was detected intraoperatively. In addition, the uterus and bilateral adnexa appeared normal. The tumor was resected with part of the ileum. Histopathology confirmed a diagnosis of endometrioid adenocarcinoma originating from the serous surface of the small intestine.

Keywords

Extragonadal endometrioid adenocarcinoma; cytokeratin; malignant transformation; dynamic CT

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Submitted: 2015-03-30 16:49:31
Published: 2015-09-30 11:13:47
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Copyright (c) 2015 Natsuko Makihara, Ichiro Fujita, Hiroo Souda, Takahisa Yamamoto, Terumasa Sashikata, Toru Mukohara, Tetsuo Maeda

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