254 Diseases of the Genital Organs 



when they are located upon the glans penis or within the 

 sheath, where constant compression acts to modify their 

 form. The attrition caused by protruding and retracting 

 the penis tends to abrade the epithelium covering the tumor. 

 The mucus, sebum, and sometimes urine, tend to macerate 

 and irritate the new-growth. As a consequence of these 

 conditions, ulceration, superficial necrosis, and suppuration, 

 with highly repulsive odor, are frequent and not rarely lead 

 to error in diagnosis. 



It is only rarely that this type of tumor attains such size 

 as to cause phimosis or paraphimosis. Possibly one reason 

 for this is that, with the small peduncle, when the tumor be- 

 comes sufficiently large to retard the movements of the 

 penis, the stalk divides and the tumor drops away. I have 

 had them drop off in my hand when attempting to make a 

 physical examination. They are readily observed . during 

 copulation. The copulatory attrition and great vascularity 

 of erection commonly cause hemorrhage. Such tumors call 

 for early excision. Benign penial tumors, if not promptly 

 removed, may extend and eventually call for amputation of 

 the penis, though, had opportune attention been given, mere 

 excision of the tumor would have sufficed. 



The animal should be cast for the operation, with all four 

 limbs extended, or may be secured upon the operating table. 

 The penis, whether of stallion, bull, or other male, should be 

 exposed and secured as advised in Chapter II, and either 

 general or local anaesthesia applied, as conditions may dic- 

 tate. When the peduncle is small and superficially attached, 

 it should be excised, removing a liberal amount of normal 

 tissue with it in order to have assurance that all the neo- 

 plasm is included. Care should be taken not to remove an 

 unnecessarily large amount of tissue, because the contrac- 

 tion of the cicatrix is liable to bend the penis at an angle 

 and make copulation difficult or impossible. The invasion 

 of the penial tissue had best not be circular nor transverse, 

 but preferably the base of the peduncle should be removed 

 by making two incisions beginning above or on the proximal 



