File:Modern surgery, general and operative (1919) (14597250610).jpg

Identifier: modernsurgerygen1919daco (find matches)
Title: Modern surgery, general and operative
Year: 1919 (1910s)
Authors: Da Costa, J. Chalmers (John Chalmers), 1863-1933
Subjects: Surgery, Operative
Publisher: Philadelphia : Saunders
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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, sweat,sebaceous matter, and hair. The first form is known as an atheromatous cys-toma; the second, as a dermoid. A deep-seated dermoid may contain also suchstructures as prove it must have taken origin from a displaced matrix repre-senting different tissues and organs (Senn). Such a dermoid may containportions of organs, bone, cartilage, and teeth. A dermoid cyst may be definedas a heterotopic cyst, the wall of which is composed of connective tissue linedwith epithelium and containing material formed by the proliferation of epithe-hum and often hair, teeth, or even bone. An injury may displace a bit of epi-thelium and lodge it in connective tissue and from this a traumatic dermoid mayarise (Fig. 215). Traumatic dermoids are not true dermoids. Garre calledthem traumatic epithelial cysts. They are most often encountered in the palmarsurface of the hand or fingers. The skin above such a cyst is not adherent to itand often a scar is visible. The cyst wall is composed from without inward
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IlG. 215.—Traumalic dermoid cy.st. of connective tissue and epithelial cells, the stratum corneum being the innerlayer (Leo Buerger, in Annals of Surgery, August, 1907). The cyst containsdesquamated epithelium and often cholesterin. The causal injury is usually apuncture, but may be a laceration, a contused wound, or a bite. Sometimes acyst arises in the track of a healed sinus. Pietzner collected reports of 73 cases(Ueber Traumatische Epithelcysten. Dissert. Rostock., 1905). True dermoid cysts are most commonly found in the ovary and in regionswhere, during bodily development, the blastodermic layers come in contact;for instance, in the neck, the eyelids, the orbital angles, the lumbosacral region,the root of the nose, and the floor of the mouth. Such cysts are also found inthe ovary, testicle, brain, eye, mediastinum, lung, omentum, mesentery, andcarotid sheath. A dermoid of the lumbosacral region may be mistaken for a spina bifida.Sarcoma may form from the connective-tissue eleme

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