PMC6814325_01
Showing the dilated proximal jejunum, intussusception and collapsed distal bowel
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Trietz (Figure 1, Figure 2). This was excised en-bloc and sent for histology.
Gross picture of the resected jejunal segment showing a single black-grey mass arising from the jejunal wall
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Trietz (Figure 1, Figure 2). This was excised en-bloc and sent for histology.
Histological section showing malignant spindle shaped cells in the submucosa. The overlying mucosa is intact. H&E x100
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The malignant cells show strong positivity for S-100 on immunohistochemistry (Figure 3, Figure 4, Figure 5).
Histologic sections showing a higher power view of the malignant spindle melanocytic cells with marked nuclear atypia. Melanin pigment depositions are also evident, few are within melanophages. H&E x400
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The malignant cells show strong positivity for S-100 on immunohistochemistry (Figure 3, Figure 4, Figure 5).
Immunohistochemical section showing cytoplasmic and nuclear positivity of the malignant cells for S100 protein. X400
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The malignant cells show strong positivity for S-100 on immunohistochemistry (Figure 3, Figure 4, Figure 5).