THERE are three fairly clearly defined types of t h e so-called polyadenoma of the stomach :-I. The single large polypoid tumour, usually growing near t h e pylorus a n d frequently becoming malignant. Cases have been reported b y Bret,' Finnig a n d Friedenwald,Z Gibson a n d Blake,s Ledderhose,' Ruggles,21 and others.
2. Polyadenorna
of t h e ' Brunnerim ' type. the structure of which resembles t h a t of Brunner's glands normally found in t h e duodenum. This t y p e causes a considerable thickening of t h e mucous membrane over a limited area, a n d like t h e first type, frequently becomes malignant. It was first described b y Hayems a n d again more fully b y S O C ~, ~ who considered i t to be due to a congenital malposition of Brunner's glands. 3. A form of polyposis first fully described b y Menetrier? in 1888 a n d called ' polyadenome '. In this type t h e tumours are multiple, sessile or pedunculated, a n d usually scattered widely over t h e surface of the stomach. Their microscopical appearance suggests t h a t they are localized overgrowths of t h e mucous membrane, a n d they are seldom associated with carcinoma. Cases of t h e first two types are well defined, hut t h e third type has given rise to much controversy, a n d t h e true nature of the morbid process is still uncertain. It is frequently referred to as ' gastritis polyposa ' or ' diffuse polyposis '. The former term is undesirable, as i t suggests an inflammatory origin which is not yet proved; the latter possesses the merit of being non-committal. My attention was directed to t h e subject by t h e following case. Case Report.-Mr. L., age 60.
HIsToRy.-The patient had been in perfect health up to seven months before I saw him. About this period he began to get occasional attacks of diarrhea, nnd once or twice he vomited after food. The attacks of diarrhea alternated with constipation, SO that a growth of the colon was suspected.
More recently he had suffered from a feeling of nausea after ' ' * RICHARD. Soe. anat., 1846, juillet.