| testicular duct | The secretory duct of the testicle, running from the epididymis, of which it is the continuation, to the prostatic urethra where it terminates as the ejaculatory duct. Synonym: deferent canal, deferent duct, spermatic duct, spermiduct, testicular duct, vas deferens. (05 Mar 2000) |
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| testicular dysgenesis | A congenital derangement of seminiferous tubular structure and function, resulting in male infertility; the defect in spermatogenesis may be incomplete, as in maturational arrest or premature sloughing, or spermatogenesis may be completely absent, as in the Sertoli-cell-only syndrome. (05 Mar 2000) |
| testicular feminisation | <endocrinology> if genetic males lack receptors for testosterone they develop as females and are unresponsive to male hormones. (13 Jan 1998) |
| testicular feminization | A condition, due to lack of cellular receptors for testosterone and dihydrotestosterone, in which the subject is phenotypically female but lacks nuclear sex chromatin and is of xy chromosomal sex. The uterus and tubes are absent or rudimentary, and the gonads are typically testes and may be abdominal or inguinal in position. The incomplete form is marked by partial fusion of the labioscrotal folds and clitoromegaly, and at puberty, variable feminization and partial virilization may both take place. (12 Dec 1998) |
| testicular feminization syndrome | <syndrome> A type of male pseudohermaphroditism characterised by female external genitalia (may be ambiguous if the syndrome is incomplete), incompletely developed vagina often with rudimentary uterus and fallopian tubes, female habitus at puberty but with scanty or absent axillary and pubic hair and amenorrhoea, and testes present within the abdomen or in the inguinal canals or labia majora; epididymis and vas deferens are usually present; androgens and oestrogens are formed, but target tissues are largely unresponsive to androgens; individuals are sex chromatin-negative and have a normal male karyotype; X-linked recessive inheritance; there is a defect in the androgen receptor protein. (05 Mar 2000) |
| testicular hormones | Hormones produced in the testis. (12 Dec 1998) |
| testicular implant | A device placed surgically in the scrotum in males with absence or severe hypoplasia of the testis. Synonym: testicular prosthesis. (05 Mar 2000) |
| testicular microlithiasis | <radiology> Ultrasound features: multiple intratesticular non-shadowing echogenic foci, size: 1 - 3 mm, variable number, distribution: usually diffuse pathology: cellular degeneration, central calcified core clinical significance: prevalence: 0.05-0.6%, possible association with primary testicular malignancy, association: cryptorchid testes, infertility Ref: Backus et al., Radiology 1994; 192:781-785 (12 Dec 1998) |
| testicular plexus | The autonomic plexus derived from the aortic plexus and accompanying the testicular artery. Synonym: plexus testicularis, spermatic plexus. (05 Mar 2000) |
| testicular prosthesis | A device placed surgically in the scrotum in males with absence or severe hypoplasia of the testis. Synonym: testicular prosthesis. (05 Mar 2000) |
| testicular relapse | <oncology> Recurrence of leukaemia in the testicles. The disease may be restricted to the testicles or may also show evidence of disease in either the bone marrow or CNS. Treatment will depend on the timing and extent of relapsed disease. (13 Jan 1998) |
| testicular scan | <radiology> Tc-99m pertechnetate 30 mCi, interpretation: torsion = cold defect, epididymo-orchitis = hot spot, trauma = hot or cold (12 Dec 1998) |
| testicular torsion | <surgery> An acute condition that results when there is a twisting of the spermatic cord in the scrotum, thus compromising the blood supply to that testicle. Symptoms include severe testicular pain and swelling. (13 Jan 1998) |
| testicular tubular adenoma | A neoplasm of the ovary, arising from the ovarian stroma, mimicking to a greater or lesser extent derivatives of the sex cord mesenchyme of the testis, and sometimes causing defeminization and virilization. (12 Dec 1998) |
| testicular veins | See: right testicular vein, left testicular vein. (05 Mar 2000) |