426 The Penis 



In amputation of the penis the skin should not be drawn too far 

 forward lest the stump of the organ be left raw. The corpus spongiosum 

 should be cut longer than the corpus cavernosum. The arteries di- 

 vided are the two upon the dorsum and the two of the crura ; they 

 may require ligatures. 



When the penis is extensively implicated in epithelioma, and 

 the condition of the inguinal glands shows that the disease is at 

 present localised, removal of the entire organ is advisable. A sound 

 having been passed, the scrotum is split into lateral halves, the crura 

 of the corpus cavernosum are dissected from the pubic arch ; and the 

 posterior inch of the corpus spongiosum having been detached, the 

 penis is removed bodily, and the truncated urethra is diverted through 

 the posterior part of the scrotal wound. 



THE SCROTUM 



The scrotum (scorttim, skin) consists of the skin and the two layers 

 of the superficial fascia. Above, the scrotum is continuous with the 

 integuments of the abdomen and penis, and behind with those of the 

 perineum, the two layers of the superficial fascia being blended into a 

 single layer, which is destitute of fat. This fascia is thin, and contains 

 amongst its loose meshes bundles of unstriped muscular fibre, which 

 constitute the dartos (8ep&>, Saproy, flayed, from the skin-like ap- 

 pearance of the muscular fascia). The skin and dartos are closely 

 connected. Each testicle has its own fascial investment, but the two 

 pouches are connected along the middle line to form the septum scroti. 

 In the operation of castration, therefore, the opposite testis is not seen. 

 (See fig. on p. 385.) 



Along the under part of the scrotum is a dark cutaneous seam or 

 ridge the rapht which shows the line of fusion of the lateral halves 

 of the scrotum. The root of the scrotum covers the perineal part 

 of the urethra. 



The superficial fascia of the scrotum, like that of the penis and 

 eyelid, is devoid of fat, and is readily infiltrated with serous effusion. In 

 this water-logged condition the scrotum may increase to an enormous 

 size ; in cellulitis, also, the parts rapidly swell, and gangrene of the 

 scrotum from erysipelas, or from extravasation of urine, is not uncom- 

 mon. The precise connections of the deep layer of the superficial 

 fascia, and the importance of that fascia in urinary extravasation, are 

 set forth on p. 439. 



The arteries of the scrotum are derived from the superficial pudic 

 branches of the common femoral and from the superficial perineal 

 of the internal pudic. The veins are large, superficial, and tortuous, 

 and empty into the termination of the long saphenous and into the 

 internal pudic. They should be avoided in tapping a hydrocele. The 

 scrotal veins communicate with the spermatic veins. 



