case_images: PMC10656115_01
case_images: Axial (a, b) and coronal (c) CT images at presentation. A concentric multilayer and cord-like structures were visualized in the transverse colon (red arrows).
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case_images: F1
case_images: Computed tomography (CT) showed concentric multilayer and cord-like structures in the transverse colon (Fig. 1).
case_images: Plain radiography images. a Before the therapeutic enema, a defect was found in the left colon (red arrows). b, c After the enema, the defect moved to the oral side (red arrows).
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case_images: F2
case_images: A therapeutic enema was performed using 200 mL diatrizoate meglumine and diatrizoate sodium solution in 2,000 mL of water (Fig. 2).
case_images: A colonoscopic image shows invagination of the head of the polyp in the transverse colon (a). After releasing the invagination, a polyp over 40 mm in size with a thick stalk was visualized (b). The base of the stalk was ligated with a detachable snare, and polypectomy was performed after confirming the color change of the tumor surface (c, d).
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case_images: F3
case_images: During the colonoscopy, invagination of the head of the polyp was found in the transverse colon (Fig. 3a). After releasing the invagination, a polyp over 40 mm in size with a thick stalk was visualized (Fig. 3b). The stalk was ligated with a detachable snare, and polypectomy was performed (Fig. 3c, d). Histopathological examination of the polyp revealed hyperplasia of the mucosal epithelium and dendritic growth of smooth muscle fiber bundles from the mucosal muscle plate, which are features of PJS polyps (Fig. 4a, 3b).
case_images: a, b Histopathological images of the polyp demonstrate hyperplasia of the mucosal epithelium and dendritic growth of smooth muscle fiber bundles from the mucosal muscle plate.
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case_images: F4
case_images: Histopathological examination of the polyp revealed hyperplasia of the mucosal epithelium and dendritic growth of smooth muscle fiber bundles from the mucosal muscle plate, which are features of PJS polyps (Fig. 4a, 3b).