Neoplasms 373 



side of the thigh which nearly touched the ground. They are ob- 

 served mostly in well-nourished animals, and their favorite location 

 is on the Extremities, the inner surface of the Thigh, the Breast, 

 the Shoulder, the Belly, the Anal region, the Vagina (Oreste, 

 Falconio). They also occur in the Medulla of the Kidney (Bruck- 

 mueller), the Liver (Trasbot), the Trachea, Pleura, and Lungs 

 (Kitt, Semmer), and the Intestinal Submucosa. Two tumors at- 

 tached to the Uterus, one of which had grown through the muscular 

 wall of the abdomen, were seen and described by Edgar as lipo- 

 mata. It is doubtful if they could have been true lipomata, be- 

 cause a feature of Upomatous tumors is that they do not tend to 

 grow through surrounding tissues. 



Myomata. A myoma is a tumor composed of unstriped 

 muscle fibers (leiomyoma) containing as a rule a considerable pro- 

 portion of fibrous tissue. It is of fleshy consistence, pinkish in 

 color, quite vascular, and may attain the size of the human fist. They 

 are seldom seen, but have occurred in the Heart (Jungers), in the 

 Bladder (Lienaux), within the Vagina. (Mueller), and in the Pros- 

 tate. They are occasionally found in the Genital Tract of females, 

 but are extremely rare in the bicoriiate uterus. Fibromata 

 of the uterus are often in part myomatous, and Sutton has sug- 

 gested that many tumors described as fibroids are in the first in- 

 stance leiomyomata, but become degraded into fibrous tissue. 



Hemangiomata. A hemangioma is a tumor composed largely 

 of blood vessels. Some authors include in the term localized dila- 

 tions of blood vessels, such as hemorrhoids and the scrotal vari- 

 cosities seen by Moeller, but these are not true angiomata of pro- 

 liferation. Virchow states that angiomata are comparatively rare 

 in animals. A lobulated angioma composed of groups of vessels 

 held together in a stroma of connective tissue and situated in the 

 Subcutis of the Right Groin was observed by Siedamgrotzky. The 

 term Cavernous angioma is used to indicate enlarged spaces lined 

 with endothelium, forming an erectile tissue, such as exists norm- 

 ally in the corpus spongiosum. They occur in the Liver, and while 

 quite common in the cat are not often met with in the dog. Sutton 

 has observed them as multiple enlargements, the size of walnuts, 

 occupying the liver substance and forming prominences on its 

 exterior. There is a very good specimen of this condition in the 

 Army Medical Museum at Washington. Lucet saw a cavernous 



