case_images: PMC11390380_01
case_images: Colonoscopic view of a submucosal lesion in the ascending colon with two superficially ulcerated areas.
case_images: fonc-14-1430745-g001.jpg
case_images: PMC11390380_01_fonc-14-1430745-g001.jpg
case_images: f1
case_images: In the ascending colon, near the ileocecal valve, we observed a nodular mass of about 4 cm mimicking a submucosal lesion covered by normal mucosa with two superficially ulcerated areas ( Figures 1A, B ).
case_images: Abdominal CT scan view of a parietal tumor in the ascending colon without lymphadenomegaly or other pertinent abdominal alterations.
case_images: fonc-14-1430745-g002.jpg
case_images: PMC11390380_01_fonc-14-1430745-g002.jpg
case_images: f2
case_images: View of right hemicolectomy.
case_images: fonc-14-1430745-g003.jpg
case_images: PMC11390380_01_fonc-14-1430745-g003.jpg
case_images: f3
case_images: A right hemicolectomy was performed without adverse events ( Figures 3A, B ).
case_images: Histopathology of the surgical specimen: diffusely parietal infiltration by plasma cells with amyloid deposits (A, B) at immunohistochemistry, the plasma cells were CD20 negatives (C) and MUM1 positives (D) with a monotypic expression of IgA chains (E).
case_images: fonc-14-1430745-g004.jpg
case_images: PMC11390380_01_fonc-14-1430745-g004.jpg
case_images: f4
case_images: The histopathological examination and immunohistochemistry study confirmed the previous result about plasma cell neoplasm ( Figure 4 ).