PMC6026685_01
Ultrasound: small bowel loop of the iliac or cecal region with thickened walls, not peristaltic, with surrounding free liquid and an important hyperemia of the adjacent mesenteric adipose tissue.
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No free liquid in the Douglas (Figs. 1 and 2 ).
Radiograph of the abdomen revealed isolated air-fluid levels without pathological significance.
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No free liquid in the Douglas (Figs. 1 and 2 ).
EE Large lymphoid elements with a blastic habitus.
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The radiograph of the abdomen revealed isolated air-fluid levels without pathological significance (Fig. 3).
CD20+ in Large lymphoid elements.
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The definitive histopathological examination revealed, in the context of perforated appendicitis with acute inflammation, presence in the wall of habitus blastic lymphoid elements (Fig. 4), also in small aggregates in vascular-like spaces (Fig. 5), with an unusual immunophenotype due to incomplete expression of CD20.