240 Neoplasms and Spiroplera Sannuiiutleuta in the Esojiliagus. 



Treatment. Treatineut can bo considered only if tlie dila- 

 tation is situated in the cervical portion of the esophai^us ; in 

 this ease a narrowing may be brought about by excision of 

 portions of the dilated wall. Collin and Schindelka have per- 

 formed this surgical operation successfully. In other cases 

 we may provide for a proper nutrition of the animals with fluid 

 and mushy food, eliminating dry and rough feed. 



(Veret in one case performed manual pressure on the cervical dilatation 

 each time after feeding and brought about recovery within one week. Others 

 have recommended instruments with })ads which can be fastened to the neck. 

 These could, however, be successful only in recently formed dilatations.) 



Literature. Frohner, Monh., 1898, IX, 349.— Giintherberg, Z. f. Vk., 1907, 

 492.— Kelling, S. B., 1903, 228.— Krampe, Z. f. Vk., 1907, 322.— Pr. Mil. Vb., 1896, 

 97.— Eoloflf„.Pr. Mt. 1872-73, 161.— Schellenberg, Schw. A., 1892, XXXIV, 201.— 

 Schimniel, O. M., 1904, 345.— Schindelka, 0. Vj., 1886, 131.— Veret, Eec, 1878, 

 187.— Ziirn, D. t. W., 505. 



7. Neoplasms in the Esophagus. Tumores oesophagi. 



Papillomata, sometimes singly in the shape of small, soft, villiferous 

 nodules on the inner surface of the e.sophagus, sometimes (particularly 

 in the middle section of the gullet) in the shape of large (the size of a 

 fist) branched pediculated soft cauliflower masses, are comparatively 

 frequently seen in cattle. Sometimes multiple actinomycomata are 

 seen on the mucosa as prominent, flat, tough or internally softened yel- 

 lowish-red nodules ( Siedamgrotzky, Johne) or single tumors are devel- 

 oped which may he as large as a fist (Jong). 



In horses there are encountered in the esophagus fibroma (Diecker- 

 hoff), melanoma (Roell, Besnard), sarcoma (Cadeac) and carcinoma 

 (Lorenz), in dogs occasionally sarcoma, chondroma and retention cysts. 



Symptoms. Tumors narrow the lumen of the esophagus in propor- 

 tion to their size and consistency, and produce the symptoms of eso- 

 phageal stenosis (see page 2.32). 



One must particularly think of a tumor if there is in the left jugu- 

 lar depression a permanent, firm swelling, free from inflammatory symp- 

 toms, causing the sound to meet an impediment. 



Treatment can only consist in the operative removal of the tumors 

 situated in the cervical portion or, in actinomycosis, in the internal ad- 

 ministration of iodine preparations. 



8. Spiroptera Sanguinolenta in the Esophagus. 



Occurrence. The occurrence of spiroptera sanguinolenta 

 in dogs has been reported from France, Italy, China, Brazil, 

 India, Turkestan, Japan and Tunis; 10% of the dogs of Japan 

 and 70% of the dogs of Tunis are said by Roger to suffer from 

 this worm. 



Etiology. Spiroptera sanguinolenta is a blood-red worm 

 3-8 cm. long; the male is smaller than the female. The tail end of 



