Background
Occurrence of primary pulmonary neoplasms in pediatric patients are
uncommon. Inflammatory myo-fibroblastic tumor (IMT) is a rare neoplasm,
which has a moderate risk of malignancy appearing mainly in children and
young adults (1, 2). Its nature is in majority of cases benign and
rarely can metastases however could commonly relapse (3). This tumor is
consist of different inflammatory cells, which its diversity is from
primarily myo-fibroblastic cells to plasma cells in pathologic exam (4).
IMT is defined as “a lesion composed of a proliferation of
myo-fibroblastic spindle and stellate cells with abundant eosinophilic
cytoplasm mixed with infiltrative plasma, inflammatory cells,
lymphocytes and eosinophils” in world health organization (WHO) (5).
IMT is known by numerous terms, including plasma cell granulomas,
inflammatory pseudo-tumor, fibrous histiocytoma and pseudo-lymphoma (6),
and may occur in a wide range of anatomical locations such as the lungs,
omentum, bladder, spleen, breast, pancreas, liver, colon, spermatic
cord, prostate, peripheral nerves, soft tissue, and orbit. About
one-third of these tumors are found in the respiratory tract (6). We
here report a case of IMT of the lung.