Intestinal anisakiasis can cause intussusception in adults: An extremely rare condition

Figure 1 Abdominal contrast-enhanced computed tomography (CT) imaging. The coronal multiplanar reconstruction imaging in abdominal contrast-enhanced CT clearly reveals the invaginations of the ascending colon itself (arrows).

Figure 2 A gross view of the resection specimen. The extirpated mass is 4 cm in diameter and its surface is smooth, yellowish, edematous and slightly soft (arrow).

Figure 3 Histopathological findings of the resection specimen. An anisakis body (arrow) is demonstrated in the edematously inflamed submucosa of the extirpated ascending colon (hematoxylin and eosin stain; × 20). Note that many eosinophils and lymphocytes infiltrate around the anisakis body, forming an eosinophilic granuloma. A magnified picture of the anisakis body is shown in the inset below right (hematoxylin and eosin stain; × 40).