FREE BOOKS

Author's List




PREV.   NEXT  
|<   273   274   275   276   277   278   279   280   281   282   283   284   285   286   287   288   289   290   291   292   293   294   295   296   297  
298   299   300   301   302   303   304   305   306   307   308   309   310   311   312   313   314   315   316   317   318   319   320   321   322   >>   >|  
be dealt with, and a ligature applied around the vein above the bulbous end of the stylet enables nearly the whole length of the great saphena vein to be dragged out in one piece. These methods are not suitable when the veins are brittle, when there are pouches or calcareous deposits in their walls, or where there has been periphlebitis binding the coils together. Mitchell of Belfast advises exposing the varices at numerous points by half-inch incisions, and, after clamping the vein between two pairs of forceps, cutting it across and twisting out the segments of the vein between adjacent incisions. The edges of the incisions are sutured; and the limb is firmly bandaged from below upwards, and kept in an elevated position. We have employed this method with satisfactory results. The treatment of the complications of varix has already been considered. ANGIOMA[4] [4] In the description of angiomas we have followed the teaching of the late John Duncan. Tumours of blood vessels may be divided, according to the nature of the vessels of which they are composed, into the capillary, the venous, and the arterial angiomas. CAPILLARY ANGIOMA The most common form of capillary angioma is the naevus or congenital telangiectasis. #Naevus.#--A naevus is a collection of dilated capillaries, the afferent arterioles and the efferent venules of which often share in the dilatation. Little is known regarding the _etiology_ of naevi beyond the fact that they are of congenital origin. They often escape notice until the child is some days old, but attention is usually drawn to them within a fortnight of birth. For practical purposes the most useful classification of naevi is into the cutaneous, the subcutaneous, and the mixed forms. _The cutaneous naevus_, "mother's mark," or "port-wine stain," consists of an aggregation of dilated capillaries in the substance of the skin. On stretching the skin the vessels can be seen to form a fine network, or to run in leashes parallel to one another. A dilated arteriole or a vein winding about among the capillaries may sometimes be detected. These naevi occur on any part of the body, but they are most frequently met with on the face. They may be multiple, and vary greatly in size, some being no bigger than a pin-head, while others cover large areas of the body. In colour they present every tint from purple to brilliant red; in the majority there is a considerable dash of blue, especia
PREV.   NEXT  
|<   273   274   275   276   277   278   279   280   281   282   283   284   285   286   287   288   289   290   291   292   293   294   295   296   297  
298   299   300   301   302   303   304   305   306   307   308   309   310   311   312   313   314   315   316   317   318   319   320   321   322   >>   >|  



Top keywords:

vessels

 

incisions

 
naevus
 

capillaries

 

dilated

 
angiomas
 
ANGIOMA
 
capillary
 

cutaneous

 

congenital


subcutaneous
 

practical

 

classification

 
purposes
 
mother
 
aggregation
 
consists
 

substance

 

stretching

 
origin

applied

 

bulbous

 

Little

 

etiology

 

escape

 
notice
 

attention

 

methods

 

fortnight

 

bigger


colour

 

present

 
considerable
 

especia

 

majority

 

purple

 

brilliant

 
arteriole
 

winding

 

parallel


dilatation

 

network

 

leashes

 

detected

 

multiple

 
greatly
 
frequently
 

firmly

 

bandaged

 

sutured