Cytology of minimally malignant mosothelioma of the tunica vaginalis testis.
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概要
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A case of minimally malignant mesothelioma of the tunica vaginalis testis, originally suspected to be adenocarcinoma by cytologic examination of the hydrocele fluid, is reported. The patient, a 60-year-old man, complained of hydrocele and aspiration cytology was performed.<BR>Cytologically, medium to large tumor cells 20-50μm in diameter appeared in three-dimensional clusters. Also, atypical mesothelial cell sheets containing the same medium to large tumor cells were also seen. The cytoplasm of the free round tumor cells was deeply stained with light green but only palely in the peripheral marginal zones circumferentially. Nucleoli were prominent and some tumor cells had indented or multiple nuclei. A right high orchiectomy revealed a little finger tip-sized tumor near the head of the epididymis. Histologically, it was a mixed-type malignant mesothelioma that showed both epithelial and fibrous components in close association. The epithelial cells lining the tunica vaginalis were enlarged reactively, showing abrupt transition into the tumor. Although malignant mesothelioma of the tunica vaginalis testis is an uncommon tumor, of which only thirty-one cases have been previously reported in the literature, cytologic examination of hydrocele fluid is important for preoperative diagnosis.
- 特定非営利活動法人 日本臨床細胞学会の論文
特定非営利活動法人 日本臨床細胞学会 | 論文
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