. Transactions . lativelylarge spaces (Fig. 2-), h). The sclerotic, though very mmhthinned over the most prominent part, is found, when magni-litMl,tobe not actually ])erforated anywhere ; but at the s])ot(I (Fig. 2^) a minute mass of tumour substance occupies a SARCOMA OF IMi: Oo littlu pocket ill tlie sclei-a prcjbably formed by dilatiitionjironnd a perforatiiio^ vessel, and near to it are two iiiifm-scopic infiltrations in the snbstance of tlie sclera. Theintra-ocular surface of the tumour is smoothly , the tumour is found t(j consist for themost part of
. Transactions . lativelylarge spaces (Fig. 2-), h). The sclerotic, though very mmhthinned over the most prominent part, is found, when magni-litMl,tobe not actually ])erforated anywhere ; but at the s])ot(I (Fig. 2^) a minute mass of tumour substance occupies a SARCOMA OF IMi: Oo littlu pocket ill tlie sclei-a prcjbably formed by dilatiitionjironnd a perforatiiio^ vessel, and near to it are two iiiifm-scopic infiltrations in the snbstance of tlie sclera. Theintra-ocular surface of the tumour is smoothly , the tumour is found t(j consist for themost part of round or round-oval unpigmented sarcomacells, with medium-sized nuclei and Ijut little protoplasm(Figs. 24 and 25 ) ; but in some places the cells are spindle-shaped and pigmented. The greater part is permeated bywide blood-spaces (Fig. 26, h) ; and these are separatedfrom the tumour-cells by only one or two layers of veryelongated cells which, when seen edgewise, look like Fig. 2i. *•* ft . *•- • • •-. 4 11 Showinj^ the charactor of the cells that form the chief partof the tiiinoiir. x ;3(H). fibres; the blood-spaces are so numerous as to give thegrowth the almost cavernous character before between the blood-vessels the tumour-cells arelarger (contain more protojilasm) (Fig. 24), and at thecentre of some of these avascular areas are groups ofspherical pigmented cor])Uscles; similar pigment massesare also found close to the walls of many of the periphery of the base of the tumour, ])resumably itsyoungest part, where it thins out into the choroid, consistsentirely of unpigmented small cells, and contains but fewvessels (Fig. 28, h). ihit the specimen is peculinr. imt so much in furnishing jni 96 DISEASES OF THE KETINA AND CHOROID. example of angiomatous sarcoma, as because the outer andinner surfaces of the tumour are each covered to a largeextent by a stratum of structure totally unlike that of the Fig. 25.
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Keywords: ., bookcentury1800, bookdecade1880, bookpu, booksubjectophthalmology
