Practical pathology; a manual for students and practitioners . ut some-times brighter in colour than the surrounding muscular tissue. Inthe smaller rounded tumours the muscular tissue is arranged in con-centric laminae, an arrangement which can easily be discerned withthe naked eye; but each lobule of the larger lobulated forms iscomposed of one of these concentric masses, and between them,running from the capsule, are bands of fibrous tissue, in which bloodvessels pass to nourish the new growth. In consequence of thislaminated arrangement, the appearance of these masses is frequentlycompared
Practical pathology; a manual for students and practitioners . ut some-times brighter in colour than the surrounding muscular tissue. Inthe smaller rounded tumours the muscular tissue is arranged in con-centric laminae, an arrangement which can easily be discerned withthe naked eye; but each lobule of the larger lobulated forms iscomposed of one of these concentric masses, and between them,running from the capsule, are bands of fibrous tissue, in which bloodvessels pass to nourish the new growth. In consequence of thislaminated arrangement, the appearance of these masses is frequentlycompared to that of balls of cotton. In the uterine wall the tumoursoccur in three positions: (i) Intramural, in the muscular wall itself;(2) submucous, beneath the mucous membrane; and (3) subserous,beneath the peritoneum. The two last push the mucous and seroustissues before them as they grow to the surface and eventually becomepolypoid. MYOMA 681 Harden (>J 62) and stain and mount (i^ 438). ( X 50).—In the pure myoma the section, instead of presenting a a —. n:-jv.\v- X?. Af. Fig. 226.—Non-striped myoma (uterine fibroid). Stained wiliialum hoematein and van Giesons stain. ( x 300.) a. Mass of non-striped muscular tissue, in which the rod-shaped nuclei and the parallel arrangement of the fibrils are seen. b. Similar bundles of fibres cut transversely. The sections of the fibrils have the appearance of rounded cells, the section ofthe round nucleus is seen as a dot in sonic of the sections. c. Spindle-shaped cells, of which the muscle fibrils are composed. d. Iink fibrous tissue. c. Connective tissue Small blood channel. pink tinge, as in the fibroma (stained with picro-carmine or by vanGiesons method), is yellowish-brown with deeply stained nuclearpoints at intervals. In an old myoma, where there is usually a 682 TUMOURS considerable quantity of fibrous tissue, the pink fibrous strands standout prominently between the yellowish-brown muscular bands. ( X 200 or 45
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