Pulmonary amyloidosis and multiple myeloma mimicking lymphoma in a patient with Sjogren’s syndrome: A case report

Figure 4 Video-assisted thoracoscopic surgery was performed for lung biopsy. A: In low power field, deposition of amorphous proteinaceous material deposition with multinucleated giant cells are noted in interstitium and perivascular area; B: In high power field, infiltrations of lymphoplasmacytes are noted; C-E: Areas of lymphoplasmacytic infiltration show focal immunoreactivity to CD138. However, immunoreactivity of kappa and lambda light chain reveals no definite restricted pattern.