PMC3285053_01
Tracheal computed tomography. A circumferential tracheal tumor caused a reduction of her caliber.
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F1
Computed tomography (CT) of her chest with a three-dimensional reconstruction confirmed the presence of thickening of her tracheal wall tissue; it was circumferential and irregular, causing a significant reduction in her tracheal caliber (Figure 1a, b).
Bronchoscopy findings. Circumferential and irregular tracheal tumor with a significant reduction of her tracheal caliber.
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F2
The carina was normal (Figure 2).
Tracheal biopsy and histology findings. (a) A tracheal biopsy revealed a chorion occupied by massive amyloid deposits. (b) Intense staining by anti-lambda light chain antibodies confirming the diagnosis of an amyloid light-chain amyloid tumor.
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F3
The tracheal biopsies revealed a chorion occupied by massive amyloid deposits (Figure 3a). An immunohistochemical analysis showed intense staining by anti-lambda light chain antibodies confirming the diagnosis of an amyloid light-chain (AL) amyloid tumor (Figure 3b).