Multicentric plasma cell variant Castleman’s disease mimicking intrapulmonary malignancy

DISCUSSION Open lung biopsy was performed, given the discrepancy between the CT scan appearances of ground glass shadowing, suggesting P carinii or other opportunistic infection, 2 and nodular thickening of interlobular septae, suggesting malignant infiltration with Kaposi's sarcoma or lymphoma, 3 and the bronchoscopic findings. CONTRIBUTORS JB abstracted the patient's clinical and pathological records and co-wrote the first draft of the manuscript; PJS reported the patient's CT scan, wrote the figure legend, and commented on drafts of the manuscript; JDC commented on drafts of the manuscript; RFM proposed the project, co-wrote the first draft, incorporated comments from co-authors on drafts, and wrote the final version of the manuscript.