Large mucosa-associated lymphoid tissue lymphoma simulating multiple polypoid
lesions at the cecum and rectum.
1,3) The imaging appearances of gastric lymphoma includes focal or diffuse wall thickening, occasionally ulcerated polypoid
lesions, and the submucosal nodular form (Figure 3).
Three histologic patterns are recognized, (43) the most common of which is a cloverleaf-shaped polypoid
mass with secondary changes of cystitis cystica/glandularis.
Other colonoscopic features include nodules, deformed segment of the colon, polypoid
lesions or pseudopolyps, strictures, and less commonly, fibrous bands forming mucosal bridges (3).
The solitary form is more common in adults and appears as a focal polypoid
nodule or mass on CT.
Macroscopically, no matter the histologic type, these papillomas will appear as papillary, exophytic, polypoid
to bulky lesions, red or gray or brown, and firm to friable.
The mass was formed from a firm polypoid
creamy tissue, 2 x 3 cm in size (Fig.
masses may be undetectable when concealed by incompletely distended bowel.
However, there may be another small, polypoid
tumor composed purely of Schwann cells that may or may not be related.
MRI showed bulky polypoid
tumour and a lot of high signal change within the rectal lumen suggesting a mucinous nature of the polypoid
Both showed polypoid
fragments of endometrium with complex hyperplasia with cytologic atypia and squamous metaplasia (Figure 1).
Two were located on the proximal aspect of a fold, three were flat, and four were polypoid