Spirocerca lupi

Spi·ro·cer·ca lu·pi

(spī'rō-ser'kă lū'pī),
The esophageal worm of dogs and other carnivores, a red spiruroid nematode that occurs in nodules in the wall of the esophagus, stomach, and aorta of dogs, foxes, and wolves; intermediate hosts are various coprophagic beetles. Clinical symptoms occur only in very heavy infections, which are associated with esophageal carcinomata in dogs and with hypertrophic pulmonary osteoarthropathy.
[L., fr. G. speira, coil, + G. kerkos, tail; L. lupus, wolf]


a genus of spiruroid nematodes in the family Spirocercidae.

Spirocerca arctica
found in dog, fox and wolf.
Spirocerca lupi
found in domestic and wild Canidae and wild Felidae. The worms are located in the walls of the esophagus, the aorta and the stomach, and sometimes in other organs, persisting in nodules. The nodules may be large enough to cause obstruction of the esophagus and the aorta. The esophageal lesion converts to a fibrosarcoma or an osteosarcoma in a number of cases.
Spirocerca sanguinolenta
see S. lupi (above).
References in periodicals archive ?
7) They have been associated with implants (including transponders), local trauma, vaccine administration, radiation exposure, foreign bodies, chronic inflammation, parasitic infections (especially Spirocerca lupi in the domestic dog), and retroviral infections, such as retroendothelial virus and avian leukosis virus in chickens.
Spirocerca lupi has been found in red foxes from Florida (Conti, 1984).
Also in this survey unlike results of one survey by Unlu and Eren in Turkish (2007) and one survey by Oliveriasequeira in Brazil in 2002 Spirocerca lupi and Toxascaris leonina were not isolated [13,20].