XI, B, 1 Mendoza-Guazon: Case of Dipylidium Caninum 21 



The musculature of the heart is opaque, swollen, and dark blue, and the 

 striae are not visible. Heart weighs 19 grams. 



Lungs. — The lungs are somewhat smaller than normal, although both 

 crepitate fairly well and float in water; they are pinkish, except their 

 posterior portions, which are dark blue. Both lungs cut easily, and the 

 cut surfaces show a spongelike pinkish substance. The bronchi are free 

 from mucus, and the bronchial glands are not enlarged. 



The spleen is small, and foetal lobulations are present. It is firm and 

 cuts with slight resistance. The cut surface is dark blue, and the splenic 

 pulp can be easily scraped away. Malpighian bodies and trabeculae are 

 not very prominent. The spleen weighs 12 grams. 



The adrenals are small and flat. They are firm, brownish yellow, and 

 cut easily; the cortex is firm and is dark yellow. The two adrenals weigh 

 2.7 grams. 



The kidneys are small, firm, and dark blue. The cut surface exudes very 

 much blood; it is dark purple. The cortex is small and looks swollen 

 and glistening; the pyramids are very dark. The Malpighian bodies are 

 not visible. The two kidneys weigh 37 grams. 



The liver is small, as already mentioned, and is dark purple; the edges 

 are rounded. It is somewhat firm and cuts with slight resistance. The 

 cut surface exudes much blood, shows a dark purplish color, is glistening, 

 and looks oily. The liver weighs 144 grams. 



The stomach contains some fluid with white flocculi. No erosion is 

 found in it. The pyloric opening has a circumference of 2 centimeters. 

 The duodenum is not well tinged with bile. 



The gall bladder contains thin golden bile, and its ducts are patent. 



The pancreas is reddish pink and does not show any marking. 



Intestines. — The small intestine contains a reddish mucoid material; 

 it has a thin wall. Toward the upper part of the ilevmi four chains of 

 tapeworms were found. In the lower part of the intestine was found an 

 isolated segment which seems to be composed of two parts that are united. 

 The superior part enlarges and swells, and later on a small protrusion 

 appears in the middle of it, which elongates and enlarges also, and in this 

 way the segment creeps forward and from place to place. The posterior 

 part does not take any part in this creeping; only it becomes smaller and 

 shorter when the upper part enlarges. Under the microscope this segment 

 shows a rather movable anterior part, but it is not distinctly separated 

 from the rest. The tapeworms that are found have very small bodies and 

 seem to be very young. Examination of the faeces (2 slides) does not show 

 any eggs. The mucosa of the lower part of this intestine is paler and 

 more desquamated than the upper part. The ileocaecal valve is patent, 

 and Peyer's patches above this are all swollen and congested. The large 

 intestine contains grayish, pasty, and sandlike material, and large pieces 

 of this are impacted around small, hard faeces. This material seems to 

 be bismuth. On cleaning the colon, the mucosa is found to be reddened, 

 and in some places minute holes are seen which seem to involve only the 

 mucosa. In the lower part of the rectum there is a large, round, necrotic 

 area, which is approximately 2 centimeters in diameter. Inside this there 

 are some erosions, the bases of which show white material. This is placed 

 opposite the mesenteric attachment. A few centimeters above this there 

 are, also, two longitudinal red ulcers that are transverse to the long 

 axis of the colon. No stenosis nor intussusception can be found in the 



