Yoshikatsu Sawamura

Primary carcinoma of seminal vesicle: Diagnosis assisted by sonography

A case of primary carcinoma of the seminal vesicle in a nineteen-year-old man is described. This patient represents the twelfth case reported in the literature in Japan. The experience gained in this case indicated the potential usefulness of ultrasonography in the diagnosis of primary carcinoma of the seminal vesicle.

A clinical study of urine basic fetoprotein and urine polyamine as tumor markers in epithelial cancer of the urinary tract

Abstract Background: The reliability of a new screening test for epithelial cancer of the urinary tract was evaluated and the results were compared with those obtained employing urinary cytology in routine use.

Synchronous bilateral testicular tumors of different cell types on each side

Bilateral and synchronous testicular tumors consisting of different cell types on each side are rare. We describe one additional case of synchronous bilateral testicular tumors comprised of different cell types on each side and review the relative literature.

Evaluation of testicular microlithiasis in varicoceles

BackgroundTesticular microlithiasis is said to be characterized by calcific concretions within the seminiferous tubules. There have been reports suggesting a link between testicular microlithiasis and testicular dysfunction and tumors.MethodsIn this study we assessed subjects with varicoceles detected by using testicular ultrasound, and evaluated the cases of testicular microlithiasis in terms of age, seminalysis findings, and endocrinological parameters (testosterone, follicular stimulating hormone (FSH), luteinizing hormone (LH), and prolactin (PRL)). The subjects comprised 224 patients with varicoceles diagnosed by using testicular ultrasound, who attended this institution as outpatients between January 1998 and August 2000.ResultsTesticular microlithiasis was detected in 15 out of 224 subjects (6.7%), bilateral in all cases. No significant differences were seen between the group with testicular microlithiasis and the group without testicular microlithiasis, in terms of age, seminalysis findings, and/or endocrinological parameters (testosterone, FSH, LH, prolactin). The incidence of testicular microlithiasis in outpatients undergoing testicular ultrasound varies between reports, but is of the order of 0.6–2.0%.ConclusionIn this study, we found a high proportion of testicular microlithiasis at 6.7%, strongly suggesting a link with male infertility.