case_images: PMC3350125_01
case_images: PET scan shows a localized FDG uptake in the middle third of the trachea. (a): PET, (b): CT, (c): PET-CT. (1): axial view, (2): coronal, (3): sagittal.
case_images: CRIM.RADIOLOGY2011-687203.001.jpg
case_images: PMC3350125_01_CRIM.RADIOLOGY2011-687203.001.jpg
case_images: fig1
case_images: On a follow-up abdominal CT, a possible liver metastasis was discovered for which a PET scan was required which showed a localized and unique FDG uptake within the middle third of the trachea (Figure 1).
case_images: CT scan. CT coronal reformation shows the longitudinal extent of the tumor, its location 35 mm above the carina, and the severity of tracheal narrowing (40%).
case_images: CRIM.RADIOLOGY2011-687203.002.jpg
case_images: PMC3350125_01_CRIM.RADIOLOGY2011-687203.002.jpg
case_images: fig2
case_images: Coronal reformation showed the longitudinal extent of the plasmacytoma, location of its upper part was 8.5 cm distal to vocal cords, and its distal part was 3.5 cm above the carina (Figure 2).
case_images: CT scan. Virtual endoscopy demonstrates an endoluminal view of the tracheal tumor.
case_images: CRIM.RADIOLOGY2011-687203.003.jpg
case_images: PMC3350125_01_CRIM.RADIOLOGY2011-687203.003.jpg
case_images: fig3
case_images: Virtual bronchoscopy demonstrated the severity of the airway narrowing (Figure 3).
case_images: Snapshot by tracheoscopy during the surgery shows an obstructive and fleshy tracheal mass.
case_images: CRIM.RADIOLOGY2011-687203.004.jpg
case_images: PMC3350125_01_CRIM.RADIOLOGY2011-687203.004.jpg
case_images: fig4
case_images: The endoscopic intraoperative view showed an obstructive tracheal mass with a small insertion pedicle (Figure 4).
case_images: Photomicrograph of surgical specimen. Diffuse infiltrate of neoplastic monoclonal well-differentiated plasma cells is present associated with many deposits of amyloid in the stroma (HES x200).
case_images: CRIM.RADIOLOGY2011-687203.005.jpg
case_images: PMC3350125_01_CRIM.RADIOLOGY2011-687203.005.jpg
case_images: fig5
case_images: The mass was excised with the extremity of the bronchoscope, and the base of insertion was coagulated with a rigid monopolar probe. The final histological examination showed a diffuse infiltrate of neoplastic monoclonal well-differentiated plasma cells (Figure 5).
case_images: Photomicrograph of surgical specimen. The plasma cells express cytoplasmic immunoglobulin with light chain restriction. They also express CD138, marker characteristically positive for plasma cells (immunohistochemistry, kappa x200).
case_images: CRIM.RADIOLOGY2011-687203.006.jpg
case_images: PMC3350125_01_CRIM.RADIOLOGY2011-687203.006.jpg
case_images: fig6
case_images: At immunohistochemistry the plasma cells express cytoplasmic immunoglobulin with light chain restriction and CD138, marker characteristically positive for plasma cells (Figure 6).