肺癌肺転移と鑑別を要した肺炎症性筋線維芽細胞腫瘍の1例

Inflammatory Pulmonary Myofibroblast Tumor Suspected of Pulmonary Metastasis of the Lung Cancer；Report of a Case

はじめに　炎症性筋線維芽細胞性腫瘍（in­flammatory myofibroblastic tumor：IMT）は，炎症性偽腫瘍のサブグループの一つで，リンパ球や形質細胞などの炎症性細胞の著明な浸潤を伴う，筋線維芽細胞の増殖からなる腫瘍性病変である．われわれはまれな肺IMT例を経験したので，若干の文献的考察を加えて報告する．

Inflammatory myofibroblastic tumor （IMT） of the lung is a rare disease. The patient underwent the chemoradiotherapy for primary left lung cancer which showed complete responce （CR） by the treatment. A different nodule of 10 mm in diameter was found in the left lung by computed tomography （CT）. Positron emission tomography （PET） showed positive detection correspond to the nodule （SUVmax 4.82）．A partial lung resection was carried out, and the tumor was diagnosed as IMT pathologically.