TUMOUkS 



diseases in Europeans only. Apart from the colour, however, the 

 skin lesions are identical, the papules having an angular outline 

 and a flat, occasionally umbilicated, shiny surface. When the 

 eruption disappears, it generally leaves behind some pigmentation, 

 which is extremely well marked in natives. Lichen nitidtis has been 

 seen by us on the penis of a half-caste and several Europeans. 



Lichen spinulosus is occasionally met with in children. 



Of Pityriasis rubra pilaris we have seen a case in a European. 



Parakeratosis variegata was seen by us in a half-caste patient. 

 We have come across two cases among natives of Mibelli and 

 Resphighi's Porokeratosis. We have seen a case of Granuloma 

 annulare in a European planter and one in a native clerk. 



TUMOURS OF THE SKIN. 



The tumours met with in temperate zones are met with also in 

 the tropics in Europeans as well as natives. There is no doubt, 

 however, that native races are more subject to some classes of 

 tumours than to others. We would call attention to the extreme 

 frequency among the natives of cheloid, the common occurrence of 

 fibroma moUuscum, and the comparative rarity of epithelioma of 

 the face. 



CONNECTIVE-TISSUE TUMOURS. 



Benign Connective-Tissue Tumours. 



Simple fibroma, Fibroma pendulum, and Fibroma moUuscum 



(neuro-fibromatosis of Recklinghausen) are very frequently met 

 with in natives. Myomata are occasionally observed — in our cases 

 always on the face. 



Angiomata are not rare, and multiple Telangiectases are fairly 

 common, and Lymphangiomata very frequent. 



Xanthoma planum and Xanthoma tuberosum are frequently 

 observed. 



Xanthoma diabeticorum is very common in India and Ceylon, 

 where the better classes suffer greatly from diabetes. An example 

 of Balzer's Pseudo-Xanthoma 

 or Elastorrhexis affecting the 

 abdomen was observed by us 

 in a half-caste woman. 



Cheloid. — This is extremely 

 frequent in native races. 

 According to some authors, 

 negroes suffer from it sixteen 

 to eighteen times as much as 

 whites. In Indian races it is 

 not so frequent as in African 

 natives, but still, much 



more frequent than in Fig. 097.— Cheloids. 



143 



