PMC4532120_01
Posteroanterior chest X-ray shows ill defined dense infiltrates with air bronchogram in the right lower lobe.
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Chest X-ray film revealed an ill defined dense infiltrate with air bronchogram in the right lower lung field (Fig. 1).
Gross finding of mucosal surface. Thity-six dark brown polypoid masses are scattered along the full length of the small intestine. The largest one is 8.0x5.0x4.0 cm in size.
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Similar materials were filled in the mesenteric arteries and veins (Fig. 2).
The polypoid tumor of the intestine is composed of large round cells without pigment. The cells are relatively uniform in size.(H&E, x100)
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The cytoplasm was homogenous and clear (Fig. 3).
Definitive desmosome (arrow) (uranyl acetate and lead citrate x 25,000)
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Electron microscopically, obvious desmosomes were identified as convincing evidence of carcinoma (Fig. 4).
Bronchoscopy shows an obstructing mass at the entrance of the right main bronchus.
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Bronchoscopic examination, which was done on the 10th postoperative day, revealed an obstructing round mass at the entrance of the right main bronchus (Fig. 5).
Bronchoscopic biopsy specimen. The tumor cells are large round cells with cellular pleomorphism.(H&E, x200)
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Histologically, this lesion was diagnosed as large cell carcinoma of the lung (Fig. 6).