label: Pleural Non-Hodgkin Lymphoma
label_lc: pleural non-hodgkin lymphoma
description: A rare extranodal non-Hodgkin lymphoma that arises from the pleura with no evidence of involvement of other sites at the time of diagnosis. This category includes primary effusion lymphoma, pyothorax-associated lymphoma, and exceedingly rare cases of mucosa-associated lymphoid tissue lymphoma.