PMC3934062_01
CT abdomen following contrast. A tumor of the distal intestine (white arrow)
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The lesion's approximate dimensions were about 12 x x 9 x 11.5 cm (wall thickness up to 2 cm) (Fig. 1).
CT abdomen following contrast media administration. A tumor of the jejunum (white arrow)
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In addition, thickened wall of the jejunum was visible; in its initial section, on the left hand side, the wall thickness was up to 13 mm along up to 40 mm; it intensified following contrast media administration from ca. 36 jH to 69 jH (Fig. 2).
The tumor of the small intestine - the melanoma cells with round and oval nuclei, some with visible, large nucleoli, pale, "epithelioid" cytoplasm, no creation of organoid, glandular structures. A few cells feature brown dye - melanin
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The markers: CK(-), EMA(-), Vim(+), S100(+), CD34(-), CD117(+), Ki(-), LCA(-), SMA(-), HMB(+) (Figs. 3, 4).
Immunohistochemical staining (reaction for S-100), also positive in a majority of cells, confirms the diagnosis of melanoma
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The markers: CK(-), EMA(-), Vim(+), S100(+), CD34(-), CD117(+), Ki(-), LCA(-), SMA(-), HMB(+) (Figs. 3, 4).