PMC4300353_01
Duodenal bulb tumour with lesion in gastroduodenoscopy
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Another esophagogastroduodenoscopy performed during hospitalisation confirmed the presence of a duodenal bulb tumour on the rear wall and the upper curve of the duodenum, 20 mm x 15 mm in diameter, raised to about 10 mm, with a lesion in the top, 6 mm x 8 mm in diameter, filled with inflammatory granulation tissue with visible, translucent, spontaneously bleeding vessels (Figures 1A-D).
Duodenal bulb tumour (arrows) in computed tomography - sagittal projection
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Abdominal computed tomography revealed a solid nodular change in the duodenal bulb, 19 mm x 18 mm x 24 mm in diameter, emanating from the medial wall of the duodenal bulb, and the signal strengthened significantly after intravenous administration of contrast medium (Figures 2 and 3).
Duodenal bulb tumour (arrows) in computed tomography - frontal projection
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Abdominal computed tomography revealed a solid nodular change in the duodenal bulb, 19 mm x 18 mm x 24 mm in diameter, emanating from the medial wall of the duodenal bulb, and the signal strengthened significantly after intravenous administration of contrast medium (Figures 2 and 3).
Duodenal GIST histology. H + E staining. Magnification 100x
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Histopathological staining results are shown in Figures 4-6.
CD117-positive cells in GIST structure. Immunohistochemical staining. Magnification 200x
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Histopathological staining results are shown in Figures 4-6.
The GIST presenting CD-34 expression. Magnification 200x
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The immune-histological chemistry staining of the tumour tissue samples demonstrated a strong expression of CD34 and CD117 and low mitotic index (Ki-67 < 2%), with a breakdown of figures 6/50 HPF (high power field, a field with high magnification 400x). Histopathological staining results are shown in Figures 4-6.