Colon Ascaris Lumbricoides

On screening colonoscopy, this abnormality was encountered in the secom. This roundworm is a scaris lumbar cordis, one of the most common human parasites in the world. When ingested, the durable a scaris eggs hatch in the small intestine, releasing larva that migrate through the intestinal wall, and travel both hematogenously and lymphatically to the heart and lungs. Over the next several days, the larva mature in the alveoli, then migrate up the trachea to be swallowed back into the gastrointestinal tract. These larvae will then mature in the small bowel, adult couples will succeed in producing an extraordinary number of eggs,

over 200,000 ova per day. The adults live one to two years. The majority of the scaris infections are, as in this example, asymptomatic. Symptoms are a consequence of either the immunologic hypersensitivity of the host to the worm, as in the pulmonary stage referred to as Loughler's syndrome, or to mechanical obstruction of the lumen by the worm. Heavy worm burden can result in intestinal obstruction, and migrating worms can cause pancreatitis and or colonitis when involving the pancreatic biliary tree. Multiple medical therapies are approved for its treatment, including mobendazole.

Epidemiologically, infections are most common in areas of lower socioeconomic conditions. This man manages a pig farm in China that is used to test pharmaceutical agents. From an endoscopic standpoint, it is noteworthy that the worms do not like light, and will move away from the attention it is receiving. In this example, the endoscopist was too slow to snare his prey, which succeeded in escaping, temporarily, into the cooler and darker confines of the small bowel, out of reach of the endoscope, but not from the soon-to-be-consumed anti-hemophic therapy.