case_images: PMC7242997_01
case_images: The enema study revealed complete obstruction in the advanced part of the ileus tube at the proximal portion to the jejunum.
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case_images: The enema study revealed complete obstruction in the advanced part of the ileus tube at the proximal portion of the jejunum (Fig. 1).
case_images: Enhanced abdominal computed tomography detected intussusception in the left lower quadrant with a tumor of 5 cm in diameter in the advanced part (white arrow head).
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case_images: The oral side of small intestine showed marked dilatation (Fig. 2).
case_images: (a), (b): Laparoscopy shows intussusception at the jejunum, 60 cm from the Treitz ligament.
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case_images: The surgical findings revealed intussusception 60 cm from the start of the jejunum (Fig. 3a and b).
case_images: The tumor is 5 cm x 3 cm in size. The tumor has a blackish appearance and its surface is necrotic.
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case_images: (a)-(c) Large and small asymmetric tumors with distinct nucleoli and large tumor cells with melanin deposition were observed. Immunohistochemical staining reveals that the tumor is (d) S-100 (+), (e) HMB-45 (+), (f) Melan-A (+).
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case_images: PMC7242997_01_gr5.jpg
case_images: fig0025
case_images: Based on these findings, the tumor was diagnosed as small intestinal metastasis of malignant melanoma (Fig. 5a-e).