%0 Journal Article %T Large pulmonary sclerosing pneumocytoma with massive necrosis and vascular invasion: a case report %A Genichiro Ishii %A Jun Suzuki %A Keiju Aokage %A Kenta Tane %A Koichi Goto %A Masahiro Tsuboi %A Noriko Motoi %A Satoshi Okada %A Shigeki Umemura %A Shoko Nakasone %A Takashi Sakai %A Tomohiro Miyoshi %J Archive of "Oxford Medical Case Reports". %D 2019 %R 10.1093/omcr/omz066 %X Pulmonary sclerosing pneumocytoma (PSP) is pathologically classified as an adenoma and behaves in a benign manner. However, some cases of PSP displayed pathologically malignant behavior, such as lymph node metastasis and necrosis. A 64-year-old woman was referred to our hospital complaining of a cough and breathlessness. Histopathological analysis of the resected specimen by left pneumonectomy and lymph node dissection revealed a large PSP measuring 15£¿¡Á£¿14 cm in size, with massive necrosis and vascular invasion. This case was the largest ever reported and suggested that clinico-histological presentation of PSP sometimes showed an aggressive phenotype like advanced lung cancer %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6660061/