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J Clin Pathol. 1992 November; 45(11): 1029–1030.
PMCID: PMC495040

Well differentiated (benign) papillary mesothelioma of the tunica vaginalis.


An unusual mesothelial lesion occurred in the tunica vaginalis of the testis. It conformed histologically and immunohistochemically to well differentiated papillary mesothelioma of the peritoneum. Its aetiology remains uncertain, but this lesion, more than likely, is innocuous. It is important to recognise this entity, which is not well documented in the tunica vaginalis, because it may be misdiagnosed as a malignant mesothelioma and the patient may be subjected to unnecessary treatment.

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Selected References

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  • Daya D, McCaughey WT. Well-differentiated papillary mesothelioma of the peritoneum. A clinicopathologic study of 22 cases. Cancer. 1990 Jan 15;65(2):292–296. [PubMed]
  • BARBERA V, RUBINO M. Papillary mesothelioma of the tunica vaginalis. Cancer. 1957 Jan-Feb;10(1):183–189. [PubMed]
  • Johnson DE, Fuerst DE, Gallager HS. Mesothelioma of the tunica vaginalis. South Med J. 1973 Nov;66(11):1295–1297. [PubMed]
  • Foyle A, Al-Jabi M, McCaughey WT. Papillary peritoneal tumors in women. Am J Surg Pathol. 1981 Apr;5(3):241–249. [PubMed]
  • Larsen TE. Serosal papilloma of the epicardium. Report of a case. Arch Pathol. 1974 May;97(5):271–272. [PubMed]
  • YESNER R, HURWITZ A. Localized pleural mesothelioma of epithelial type. J Thorac Surg. 1953 Sep;26(3):325–329. [PubMed]

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