Case 1
A 56-year-old man was admitted for post-polypectomy surveillance. Three years previously, he was shown to have a polyp 1 cm in size during a screening colonoscopy. A polypectomy was performed and the microscopic examination revealed a tubular adenoma with high grade atypia. He did relatively well without abdominal pain, diarrhea, tenesmus, or hematochezia. His physical examination was unremarkable. The laboratory values were as follows: Hb, 13.7 g/dl; WBC, 5,940/mm3 without eosinophilia (absolute eosinophils, 297/mm3); and a normal platelet count. Electrolytes, and liver and renal biochemical tests were normal. The stool examination for parasites or eggs was negative.
Colonoscopy revealed no abnormalities except for a small, white, worm-like object attached to the cecum. One end was embedded in the hyperemic edematous mucosa and the other end was coiled and movable within the lumen (Fig. 1A). Histologic examination of the cecal mucosa revealed a moderately dense eosinophilic infiltration in the lamina propria (Fig. 1B). Microscopic sectional evaluation of the retrieved parasite was consistent with T. trichiura (a male worm including a testis). He was treated with albendazole.
Case 1
A 56-year-old man was admitted for post-polypectomy surveillance. Three years previously, he was shown to have a polyp 1 cm in size during a screening colonoscopy. A polypectomy was performed and the microscopic examination revealed a tubular adenoma with high grade atypia. He did relatively well without abdominal pain, diarrhea, tenesmus, or hematochezia. His physical examination was unremarkable. The laboratory values were as follows: Hb, 13.7 g/dl; WBC, 5,940/mm3 without eosinophilia (absolute eosinophils, 297/mm3); and a normal platelet count. Electrolytes, and liver and renal biochemical tests were normal. The stool examination for parasites or eggs was negative.
Colonoscopy revealed no abnormalities except for a small, white, worm-like object attached to the cecum. One end was embedded in the hyperemic edematous mucosa and the other end was coiled and movable within the lumen (Fig. 1A). Histologic examination of the cecal mucosa revealed a moderately dense eosinophilic infiltration in the lamina propria (Fig. 1B). Microscopic sectional evaluation of the retrieved parasite was consistent with T. trichiura (a male worm including a testis). He was treated with albendazole.
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