Malignant mesothelioma of testicular tunica vaginalis

Our plain-English summary of Malignant mesothelioma of testicular tunica vaginalis, by K. Abe, N. Kato, K. Miki, et al (International Journal of Urology, 2002).

The study

• Authors: K. Abe, N. Kato, K. Miki, S. Nimura, M. Suzuki, H. Kiyota, S. Onodera, Y. Oishi
• Journal: International Journal of Urology
• Published: 2002;9(10):602-3
• Type of article: Case report
• Cited by: 15 articles, as counted by NIH iCite
• Read it: PubMed · Publisher

Abstract

We report here a case with malignant mesothelioma of testicular tunica vaginalis. An 81-year-old Japanese man with left hydrocele was referred for operation. When hydrocelectomy was performed, a thick wall of tunica vaginalis without malignancy was observed. Seven months after hydrocelectomy, a hard irregular mass was noticed in the left scrotum, therefore inguinal orchiectomy was performed. Pathologically, the mass showed severe atypia and mitosis. The diagnosis of malignant mesothelioma was made. He refused any adjuvant treatment and died 1 year later from multiple metastases to the paraaortic lymph nodes and lumbar supine.

In plain English

This article was a case report about one patient, an 81-year-old Japanese man treated at Jikei University School of Medicine in Tokyo. The patient developed malignant mesothelioma of the testicular tunica vaginalis, the membrane around the testis. The authors stated that the patient had no history of asbestos exposure and no testicular trauma. The patient had a 30-year history of a left hydrocele, a collection of fluid around the testis. During surgery to remove the hydrocele, the tunica vaginalis was thickened, but tissue examination found no signs of malignancy. The pathologic diagnosis was mesothelial proliferation due to chronic irritation. Seven months later a hard, irregular mass appeared in the left scrotum. The testis was removed, and the tumor was diagnosed as malignant mesothelioma of the epithelial type. The patient refused further treatment and died 1 year later from multiple metastases, including to the paraaortic lymph nodes. The authors suggested that chronic irritation from a hydrocele may predispose to mesothelial hyperplasia and proliferation. They concluded that doctors should suspect mesothelioma when mesothelial hyperplasia is found in a hydrocele.

We wrote this plain-English summary from the full article with the help of AI, and a second AI model checked each sentence against the article. It is not the authors' wording; the abstract and the article are their own account.

What the study did and found

• Design: case report (single patient)
• Who was studied: One 81-year-old Japanese man with a 30-year history of left hydrocele, referred for surgery at Jikei University School of Medicine, Tokyo
• Exposure: The authors reported that the patient had no history of asbestos exposure and no testicular trauma
• Main results:
  • At the first operation (hydrocelectomy), the tunica vaginalis was thickened but showed no malignancy. The diagnosis was mesothelial proliferation due to chronic irritation.
  • Seven months after hydrocelectomy, a hard irregular mass appeared in the left scrotum
  • After inguinal radical orchiectomy, the tumor showed severe atypia and frequent mitoses and was diagnosed as malignant mesothelioma, epithelial type
  • The patient refused adjuvant treatment and died 1 year later from multiple metastases to the paraaortic lymph nodes and to a site the article prints as 'lumbar supine'
• The authors' conclusion: The authors suggested that chronic irritation of a hydrocele may be a predisposing factor for mesothelial hyperplasia and proliferation. They concluded that mesothelioma should be suspected in a patient with mesothelial hyperplasia of a hydrocele, and that patients need attention after surgery when inflammatory change of the tunica vaginalis is found.

Topics

Medical terms in this study, explained in our Lexicon: Mesothelioma, Tunica Vaginalis, Hydrocele, Hydrocelectomy, Orchiectomy.

Related studies

• Malignant mesothelioma of the tunica vaginalis testis: a rare case and review of literature — M. Drevinskaite, A. Patasius, et al. (2020)
• Analysis of mutations of PARP1, RNF213, PAX8, KMT2C, MTRR in malignant mesothelioma of testicular tunica vaginalis testis — A. Kowalik, A. Wincewicz, et al. (2020)
• Mesothelioma of the tunica vaginalis: a series of eight cases with uncertain malignant potential — F. Brimo, P.B. Illei, et al. (2010)
• Mesothelioma of the tunica vaginalis testis: a rare malignancy mimicking more common inguino-scrotal masses — P.J. Schure, K.C. van Dalen, et al. (2006)
• Malignant Mesothelioma of the Tunica Vaginalis Testis-A Malignancy Associated With Asbestos Exposure and Trauma: A Case Report and Literature Review — A.A. Baqui, N.A. Boire, et al. (2019)
• Malignant Mesothelioma of the Tunica Vaginalis Testis: Outcomes Following Surgical Management Beyond Radical Orchiectomy — P. Recabal, B. Rosenzweig, et al. (2017)

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