PMC9492891_01
The timeline of the treatments. AML, acute myeloid leukemia; HCT, hematopoietic cell transplantation.
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The timeline of the treatments is summarized in  Figure 1 .
PMC9492891_02
The timeline of the treatments. AML, acute myeloid leukemia; HCT, hematopoietic cell transplantation.
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The timeline of the treatments is summarized in  Figure 1 .
Bowel dilation, bowel wall thickening, and stenosis in the patient. (A) Abdominal radiograph showed bowel dilation with a gas-liquid level. (B) CT scan showed bowel dilation, thickening of the bowel wall, and small bowel stenosis.
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Repeat plain abdominal radiography revealed bowel dilation exacerbation with an abnormal gas-liquid level ( Figure 2A ), and computed tomographic (CT) scan showed apparent bowel wall thickening and intestinal stenosis ( Figure 2B ).
Surgical resection of the affected small intestine. (A) Small intestine wall thickening, edema, and stenosis. (B) Stiffness of the affected small intestine. (C) Reduction in the mucosal folds.
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At laparotomy, gross examination showed that the proximal small intestine was dilated, and the distal small intestinal wall was markedly thickened and edematous ( Figure 3A ). One ileal stenotic region of 20 cm was surgically removed ( Figure 3B ). The resected ileal tissue was stiff, and one stenosis with mucosal ulcerations was observed ( Figures 3B, C ).
Histological examination showed crypt loss, marked inflammation, and associated architectural distortion (hematoxylin and eosin, 200x).
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Pathological examination of the lesion location showed that the intestinal mucosa was substituted with granulation tissue with neutrophilic infiltration, and no crypts or epithelial cells were seen ( Figure 4 ).