. Diseases of infancy and childhood . ng some of this growth with the tube,thus obstructing the caliber of the same. Eel apses are common. Granulomata.^ These growths are frequently seen at the site of the wound following atracheotomy. They resemble a mass of exuberant granulations. Prof. A. Eosenberg, of Berlin, collected 231 cases of laryngeal tumorsin children. Some of them were subjected to tracheotomy; others receivedendo-laryngeal treatment preceded by tracheotomy. In another series ofcases persistent endo-laryngeal treatment was resorted to without perform-ing tracheotomy. This latter m
. Diseases of infancy and childhood . ng some of this growth with the tube,thus obstructing the caliber of the same. Eel apses are common. Granulomata.^ These growths are frequently seen at the site of the wound following atracheotomy. They resemble a mass of exuberant granulations. Prof. A. Eosenberg, of Berlin, collected 231 cases of laryngeal tumorsin children. Some of them were subjected to tracheotomy; others receivedendo-laryngeal treatment preceded by tracheotomy. In another series ofcases persistent endo-laryngeal treatment was resorted to without perform-ing tracheotomy. This latter method yielded the better results. In Part II, page 35, will be found article on Granuloma. PART XI. DISEASES OF THE SPINE AND JOINTS. PoTis Disease.^ This disease derives its name from Percival Pott, who described itin 1779. It is a chronic destructive process winch begins in the bodiesof the vertebrae. The bodies of the vertebrae support the weight of the the disease progresses the weakened parts give way, and the upper seg-. Fig. 291.—Potts Dis-ease (Langerhans). Ky-phosis of dorsal vertebrae,the result of caseous tu-berculous periostitis andosteomyelitis. Destruc-tion of three thoracic ver-tebrae. Two-thirds nat-ural size. ment inclines forward. An angular posterior projection, kyphosis, isformed which is the characteristic deformity of the disease. Etiology.—Pottos disease may appear at any period of life, fromearliest infancy to old age, but like all forms of tuberculosis of the bones,it is most common in the first ten years of life, and 50 per cent, of thecases begin between the ages of 3 and 5 years, inclusive. The lower segment of the spine, including the dorso-lumbar region,is most often involved. Cervical disease is relatively infrequent (cervical, ^ The table of differential points between Potts Disease and Rickets will befound on page 321. (848) rOTTS DISEASE. 810 7 V2 per cent.; dorsal, G8 per cent.; lumbar, 24 per cent.). The deathrate is at least 25 p
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