title: Granulomatosis with polyangiitis initially misdiagnosed as lung cancer.
abstract: Granulomatosis with Polyangiitis (GPA), which was formerly named Wegener's Granulomatosis (WG) is a systemic disease characterized by necrotizing granulomatous inflammation and vasculitis that primarily involves upper and lower respiratory tract, as well as kidneys. Diagnosing GPA on the basis of transthoracic fine needle aspiration (TFNA) may be problematic, as it can be misdiagnosed as cancer. We describe a patient with a probable GPA which was originally diagnosed as malignancy, but who responded to lung cancer chemotherapy.
authors: Serviço de Pneumologia, Centro Hospitalar de Vila Nova de Gaia/Espinho EPE, Vila Nova de Gaia, Portugal. scampainha@gmail.com
authors: S
authors: S
authors: Campainha
authors: M
authors: M
authors: Gonçalves
authors: V
authors: V
authors: Tavares
authors: P
authors: P
authors: Castelões
authors: A
authors: A
authors: Marinho
authors: S
authors: S
authors: Neves
mesh_terms: D003951:Diagnostic Errors; D014890:Granulomatosis with Polyangiitis / Q000175:diagnosis*; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged