Metachronous Mature Cystic Teratomas in the Left Ovary and Bilateral Diaphragm: Report of a Case |
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Authors: | Hidenobu Okino Yutaka Koga Masazumi Tsuneyoshi Shigeaki Takeda |
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Institution: | (1) Departments of Surgery and Clinical Research, National Hospital Organization, Kokura Hospital, 10-1 Harugaoka, Kokuraminami-ku, Kitakyushu Fukuoka, 802-8533, Japan;(2) Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan |
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Abstract: | Mature cystic teratomas are found often in gonadal sites, but rarely in extragonadal sites, such as the retroperitoneum, mediastinum,
central nerve system, lung, and liver. To our knowledge, only seven cases of pathologically benign mature cystic teratoma
originating in the diaphragm have been reported. We report the case of a 45-year-old woman found to have a mature cystic teratoma
below the left side of her diaphragm. She had undergone oophorectomy for a huge mature cystic teratoma in the left ovary 34
years earlier, followed 1 year later by excision of a tumor in the right side of the diaphragm. All sections of the pathological
specimen showed evidence of a mature cystic teratoma and pathologically resembled the specimens obtained in the previous two
operations. Although this tumor might have been a recurrence of the mature cystic teratoma in the left ovary, it is more likely
that multicentric teratomatous foci metachronously developed in the gonadal and extragonadal sites. |
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Keywords: | Mature cystic teratoma Ovary Diaphragm |
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