Aberdeen University Studies Volume 21

Aberdeen University Studies Volume 21

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ... or in the mouth cavity of the fcetus. Microscopic examination shows that the tumour is composed of several tissues, and is of the type of the mixed tumours. Examples of Group I. are very rare. Ahlfcld describes and illustrates a case recorded by Baart de la Faille. In this case there was a typical epignathus attached to the base of the skull of a practically normal fcetus. In addition to this, there were two acardici acephali--pelves with lower extremities, with fork-like umbilical cords attached to the palate of the first well-formed fcetus. Examples of Group II. are more common. The case now described belongs to this group as it shows quite recognisable fcetal parts--a nostril, mouth. Wasserthal describes an epignathus with a lower extremity attached. Otto (l9) describes the case of a male fcetus with an epignathus showing male external genital organs. Kreutzmann (l5) records the case of a female fcetus with an epignathus showing female external genital organs. In examples of Group III. there are no recognisable organs, although the tumour is usually more or less covered by epidermis, and, like a teratome, may contain fibrous tissue, cartilage, bone, muscle, gut epithelium, rudimentary brain substance, etc. To this belongs Schwalbc's case I., which had the structure of a typical teratome, and contained derivities from all three germ layers. Group IV. includes the most simple forms, namely, the hair-clad pharyngeal polypi. These usually consist of some connective tissue and fat, with perhaps a piece of bone, and are covered by cutis and epidermis, with hairs and glands. Thus Arnold describes the case of a girl of 13 years, from whose soft palate a hairy polypus was removed. The polypus was mainly composed of fat, and was covered with...show more

Product details

  • Paperback | 120 pages
  • 189 x 246 x 6mm | 227g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236990617
  • 9781236990617