PMC6000908_01
CT scan showing an extensive mass and the surrounding tissue, accompanied by a contrast effect in the abdominal cavity.
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Abdominal enhanced computed tomography (CT) revealed an extensive edematous wall thickening of the ileocecal area (Fig. 1).
The mass was seen with a low signal intensity on T1-weighted images (2A) and with an inhomogeneous signal intensity on T2-weighted images (2B).. The boundary between the tumor and the uterus was unclear.
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Abdominal magnetic resonance imaging (MRI) showed a large tumor with a long diameter of 9.6 cm located from the ileocecal area to the posterior cervical side of the uterus (Fig. 2).
Photographs showing the normal intestinal mucosa; no invasion into the ileocecal valve was observed. Cecal wall thickening showing a suspected cecal or appendiceal tumor.
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An excised specimen revealed only wall thickening with edema in the intestinal mucosa, and no tumor was evident (Fig. 3a and b).
The histopathological findings confirmed a bacterial mass in the tissue. A radial corona consisting of a crown structure and a collection of neutrophils was observed around the bacterial mass.
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Actinomyces israelii. A bacterial mass was confirmed in the tissue, and a radial corona, consisting of a club-like structure and a collection of neutrophils, was observed around the bacterial mass (Fig. 4).