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Pulmonary inflammatory pseudotumor is a rare proliferative lesion of unknown etiology and it accounts for 0.7-1% of all pulmonary tumors. This is a non-neoplastic process and characterized by irregular growth of inflammatory cells and seen in children and young adults mostly and, detected incidentally. A well-demarcated lesion measuring 38x44 mm was detected in posterior segment of the left lower lobe on computed tomography of the chest in a 50-year-old male patient who was admitted with complaints of cough and chest pain. The patient underwent left posterolateral thoracotomy for diagnosis and treatment and the mass lesion in the lower lobe was enucleated. Pathology result was reported as inflammatory pseudotumor. Owing to its rarity of incidence, we presented this case in the light of the literature. [ABSTRACT FROM AUTHOR]

Inflammatory pseudotumor is a benign tumor of unknown etiology and is rarely seen in the spleen. It often mimics benign and malignant tumors. The diagnosis is easily made because of the characteristic histopathological features. The most important characteristic of inflammatory pseudotumor is that the clinical and laboratory findings completely disappear after surgical resection. It often settles in lungs, but can also be seen anywhere throughout the body. In this report, we aimed to present a rare case of inflammatory pseudotumor of the spleen in a 65-year-old male patient who underwent splenectomy for a tumorous mass and whose definitive diagnosis was established by histological examination of the resected specimen. [ABSTRACT FROM AUTHOR]

Inflammatory pseudotumor of the lung is an uncommon nonneoplastic tumor of unknown origin. This tumor typically manifests as a solitary, peripheral and sharply circumscribed mass. Multiple lesions are seen in about 5% of cases. Most of the patients are under 40 years of age and complain mainly of non-specific symptoms. Many synonyms have been used for this disease, usually in relation to the most represented cell type: plasma cell granuloma, inflammatory myofibroblastic tumor, fibroxanthoma, histiocytoma, or pseudoneoplastic pneumonia. [ABSTRACT FROM AUTHOR]