The pathology and surgical treatment of tumors . 642 PATHOLOGY AND TREATMENT OF TUMORS. In rare cases such tumors are also found between the bladder and therectum. Thyroid-dermoids in the coccygeal region acquire a large size (). Middeldorpf first associated them with the post-anal gut. In theinterior of the tumor are spaces or cysts lined by columnar epithelium;these spaces contain a ropy mucus. Dermoid cysts between the rectum and the sacrum often attain greatsize, and frequently they suppurate. They are found as frequently inmen as in women. Interesting cases of dermoids in this loca
The pathology and surgical treatment of tumors . 642 PATHOLOGY AND TREATMENT OF TUMORS. In rare cases such tumors are also found between the bladder and therectum. Thyroid-dermoids in the coccygeal region acquire a large size (). Middeldorpf first associated them with the post-anal gut. In theinterior of the tumor are spaces or cysts lined by columnar epithelium;these spaces contain a ropy mucus. Dermoid cysts between the rectum and the sacrum often attain greatsize, and frequently they suppurate. They are found as frequently inmen as in women. Interesting cases of dermoids in this location havebeen reported by Bryant, Ord, and Page. Open dermoids of the rectum and bladder were first described in1874 by Danzel and Martini (Fig. 465). The tumors are furnished. Fig. 465.—Rectal dermoid (after Danzel). with long locks of hair that protrude from the anus; sometimes theyalso contain teeth. It was formerly supposed that dermoids of therectum originated in the ovary and reached the rectum by invagination—an opinion which is no longer tenable. In Danzels case the tumorwas as large as an apple and was said to contain brain-substance en-closed in a bony capsule; a tooth projected from the tumor. Gluttonremoved a rectal dermoid from a girl nine years of age. In the rec-tum as well as in the pharynx dermoid tumors eventually becomepedunculated. Auricle.—The external ear in the embryo is formed by coalescenceof a number of tubercles. If, during the process of fusion, an islandof skin becomes buried, it forms a matrix from which at any time adermoid cyst may grow. Dermoids of the auricle never attain largesize, and they are usually mistaken for sebaceous cysts. The tumorsometimes occupies the groove between the pinna and the mastoidprocess. TERATO
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectneoplas, bookyear1895
