33 year old Chinese female presented with intermittent right chest pain and shortness of breath for a few months. A right lower lobe nodule was found on chest xray and a PET/CT was performed for further characterization. The nodule was found to be hypermetabolic. Patient was sent for right lower lobe wedge resection for a presumed bronchogenic carcinoma vs. peripheral pulmonary carcinoid tumour.
Gross Description: Received in formalin designated "Right Lower Lobe" is the product of a wedge biopsy of lung. On sectioning a mass is identified in the center parenchyma coming within 0.2 cm from the pleural surface measures 2.2 x 1.2 x 1.0 cm. It is rubbery in consistency and tan white in color.
Immunohistochemistry staining demonstrates polytypic plasma cells within the lesion; the spindle cells show a smooth-muscle phenotype. These findings support the findings of inflammatory pseudotumor, plasma cell granuloma subtype.