The principles and practice of modern surgery / by Roswell Park ... with 722 engravings and 60 full-page plates in colors and monochrome.

  • Roswell Park
Date:
1907
Catalogue details

Licence: Public Domain Mark

Credit: The principles and practice of modern surgery / by Roswell Park ... with 722 engravings and 60 full-page plates in colors and monochrome. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    ATh'OPny AM) in rERTROPHY ATROPHY AND HYPERTROPHY, AND THE CONSEQUENCES OF ALTERED, DIMINISHED, AND PERVERTED NUTRITION. As a consccnuMicc ol increase of luitritioii we luive a coiKlilion known eoni- monly as liijpr tiro phi/, more accurately as /iijprrp/asid. Ilypertrojjhy literally means overfjrowth, whereas hyperj)lasia more accurately describes that which constitutes hy|)ertro])hy—namely, numerical increase of constituent cells, ('omnion usaj^e has made the more inaccurate name hy|)ertroj)hy cover nearly all the.se conditions. IIi/prrtrop/ii/, or hy|)er|)lasia, inranfi nilarfjniirnf of a part or of an orcjan hcijotid its usuaWnuits, and as the result of increased function or increased nutrition. It is to he distinijuished from (/u/anfisni, which means inordinate enlargement as the result of a congenital tendency or condition. Hypertrophy is— I ]. Compensatory; \ 2. l''rom deficient u.se. Local; (ieneral; SeniL ; I (). Congenital. A. Physiological Hypertrophy.—1. This includes many of the compensatory enlargements of an organ or a |)art when extra work is put upon it, owing to deficiency of some other organ or part. This is spoken of as coinpt'tisatoni enlargement. Illus- FlG. 1 A. P/iijsiohx/ira/ 3. B. Pathological i - Congenital hypertrophy: gigantism of both lower extremities. (Case of Dr. Graefe [Sandusky].) trative examples may be seen in the heart, which becomes larger and stronger when the bloodves.sel walls are diseased and their lumen marrowed, or when other obstructions to circulation are brought about; again, in enlargement of one kidney after extirpation of the other, or of the wall of the stomach w^hen the pylorus is constricted or obstructed; again, of the fibula after weakening or more or less destruction of the tibia, or of the shaft of any bone when it has been weakened at some point by not too acute disease; or, again, of the walls of bursse after constant friction. 2. The best examples of physiological hypertrophy owing to deficient use are perhaps seen in some of the lower animals; as, for instance, in the teeth of such rodents as beavers when kept in ca))tivity and prevented from natural use.