57 
THE PATHOLOGICAL REPORT OF A 
CASE OF CESOPHAGOSTOMIASIS IN MAN 
BY 
H. WOLFERSTAN THOMAS, M.D., C.M. (McGill), 
Of the Research Laboratory in M and os , State of Amazonas , 
North Brazil, 
AND THE 
Thompson-Yales and Johnston Laboratories , University of 
Liver fool. 
Expedition to the Amazon , 1905-1909. 
(Plates I, II, III, IV, V, V\ V B ) 
CEsophagostomiasis is a disease produced by a small nematode, 
an oesophagostome, of which there are several species. The larvae 
of this worm become encysted in the coats of the bowel, usually in 
the large intestine, and gradually develop into immature adult 
cesophagostomes. They can rupture their cyst walls and pass into 
the lumen of the intestine or into the peritoneal cavity. 
Anthropoid apes, certain species of monkeys, and some of the 
domestic animals can be infected by various cesophagostomes In 
a monkey it is not at all uncommon to find small subpentoneal nodules 
and submucous cysts containing minute worms. Weinberg* has given 
a very complete report of the macroscopical and microscopical 
appearances of the disease in anthropoid apes and monkeys. 
CEsophagostomiasis is an extremely rare disease m man. Brump 
reported the first case in 1905, in a negro from the Omo river neai 
Lake Rudolph in East Africa. 
Railliet and Henry described the cesophagostome in this cas , 
naming it Oes. brumfti. Our case is the second to b e recorded in man , 
* Weinberg, M. CEsophagostomose des anthropoides et des singes 
Archives de parasitologie, T. XIII, No. 2, 1909. 
inferieurs. 
