Cardoso J M, Kimura K, Stoopen M, Cervantes L F, Flizondo L, Churchill R, Moncada R
AJR Am J Roentgenol. 1977 Jun;128(6):935-41. doi: 10.2214/ajr.128.6.935.
Entamoeba histolytica is a protozoan that is endemic in various parts of the world, including some areas of the United States. It may live in the large bowel in its cyst form without harming the host (commensalism) or, for as yet poorly understood reasons, invade the tissues as a trophozoite producing invasive amebiasis of the colon. In a review of over 3,000 cases of invasive amebiasis, the clinico-pathologic forms of the disease were: ulcerative rectocolitis (95%), typhloappendicitis (3%), ameboma (1.5%), and fulminating colitis and toxic megacolon (0.5%). Different radiographic patterns are seen in each clinical form with varying degrees of specificity. It is vitally important that this disease be included in the differential diagnosis of large bowel pathology even in nonendemic areas. Several referral patients who have received inappropriate therapy for inflammatory bowel disease with near disastrous results are seen at one of our institutions (Loyola) each year.
溶组织内阿米巴是一种原生动物，在世界各个地区都有地方性流行，包括美国的一些地区。它可以以包囊形式生活在大肠中而不损害宿主（共生状态），或者由于尚未完全了解的原因，作为滋养体侵入组织，引发结肠侵袭性阿米巴病。在一项对3000多例侵袭性阿米巴病的综述中，该疾病的临床病理形式包括：溃疡性直肠结肠炎（95%）、盲肠阑尾炎（3%）、阿米巴瘤（1.5%）以及暴发性结肠炎和中毒性巨结肠（0.5%）。每种临床形式都有不同程度特异性的不同影像学表现。即使在非地方性流行地区，将这种疾病纳入大肠病理学的鉴别诊断中也至关重要。我们机构（洛约拉）每年都会接诊几位因炎症性肠病接受不恰当治疗而导致近乎灾难性后果的转诊患者。
