Some observations on the origin and nature of the so-called hydatids of Morgagni found in men and women, with especial reference to the fate of the Müllerian duct in the epididymis / by John H. Watson.

  • Watson, John H.
Date:
1902
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Licence: In copyright

Credit: Some observations on the origin and nature of the so-called hydatids of Morgagni found in men and women, with especial reference to the fate of the Müllerian duct in the epididymis / by John H. Watson. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    finds it to be a firm, fleshy body, the extremity of which appears to be in some cases drawn out into several very small tag-like processes; hence one is inclined to agree with Testut that in every sense of the word ‘ hydatid,’ this body is misnamed. With regard to its exact position, it is fixed by a broad base to the upper pole of the testicle, the caput epididymis overlying it slightly; and a connection in the form of a band of tissue, over which the visceral tunica vaginalis is raised as a fold, is often to be observed between the two. Fig. 1.—Section through sessile hydatid and adjacent parts of testis and epididymis (7 months foetus). A, persistent Mullerian duct in centre of hydatid ; B, testis ; 0, epididymis. Fig. 2.—Section of sessile hydatid (8 months foetus). a, testis ; b, hydatid ; c, circumferen- tial layer of cuboidal epithelium ; d, concentrically disposed wall of Mullerian duct; e, ,lumen (tri- radiate) of duct lined with col- umnar epithelium. The microscopical appearances of these bodies, of course, differ greatly according to the age of the subject from which they were obtained. In all sections of foetal testicles between the ages of 7 to’9 months, remnants of the Miillerian duct could be traced running along the anterior and outer border of the epididymis. The younger the testicle, the more obvious this solitary tubule appears, around which the neighbouring connective tissue is arranged concentrically.
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