MIXED TUMOURS 



2277 



of a beetle belonging to the genus MeZoe to the wart, the horny layer of which 

 has been first scraped off. The wart disappears, leaving a slight whitish scar. 

 The active principle is to be found in the beetle's blood. 



Hyperkeratosis of the whole sole is often observed in natives going 

 barefoot. We have seen several cases of Cornu cutaneum ; the 

 situation was generally on the hands, but in a case the condition 

 developed at the edge of an ulcus tropicum (see Fig. 862, p. 2187). 



Malignant Epithelial Tumours. 



Rodent ulcer is comparatively rare among natives, but we have 

 seen one case in a Sinhalese woman. We have observed a case of 

 Melanotic carcinoma and two of Paget's disease of the nipple among 

 half-castes. 



MIXED TUMOURS. 



Adenoma sebaceum of the face has been seen but rarely by us. 

 We have never observed in the tropics cases of true Angiokeratoma 



on the hands,' but, we have 

 seen a somewhat similar tumour 

 on the scrotum of a European. 

 A diffuse type of angiokeratoma 

 of the foot somewhat resem- 

 bling mycetoma has been de- 

 scribed in South America 

 (see p. 2147). 



RHINOSCLEROMA. 



A case of rhinoscleroma has 

 been observed by us in an 

 Indian coolie, and Gros has 

 reported the occurrence of the 

 disease in Algiers. 



TUBERCULOSIS AND 

 TUBERCULIDES— LUPUS 

 ERYTHEMATOSUS. 



Lupus vulgaris is met \vith in 

 the tropics in all races, but, 

 according to our observation, is Mj<^d€^.)^^ 

 far from being so common as in . _ ^ 



Europe. Fig. 903.— Lupus Vulgaris in a 



Tuberculosis verrucosa cutis is Sinhalese. 

 very rare, and Scrofulodermia 



much less common than in temperate zones. All the so-called 

 tuberculides — Lichen scrofulosorum, Acne scrofulosorum, Bazin's 

 Erythema induratum, Folliclis, and Acnitis—- are observed but 

 rarely in the tropics. 



