Plasma cell granuloma of the lung: Difficulties in diagnosis and prognosis

A 31-Year-Old Woman With Hemoptysis and an Intrathoracic Mass

“…Plasma cell granulomas, also referred to as an infl ammatory pseudotumor, most often present in childhood or adolescence and usually do not exceed 6 cm in transverse diameter. 7 Desmoid tumors most often arise from the chest wall and invade surrounding structures, although they sometimes arise from the lung parenchyma. 8 An intrapulmonary or mediastinal lipoma is unlikely to have this CT scan appearance because they tend to have uniform fatty attenuation.…”

18F-FDG PET/CT Imaging Features of IgG4-Related Pulmonary Inflammatory Pseudotumor at Initial Diagnosis and During Early Treatment Monitoring

“…Although commonly located in the lungs, inflammatory pseudotumors can also involve a different site (e.g., liver, spleen, kidney, heart, brain, lymph node, salivary gland, breast, soft tissue, skin, mediastinum, mesentery, trachea, bronchus, orbit, sinonasal cavity, urinary bladder, epididymis, stomach, small intestine, large intestine, or esophagus) (1,(3)(4)(5)(6). Involvement of multiple organs has also been rarely reported (5).…”

Surgically treated pulmonary inflammatory pseudotumor

“…4 It has been reported, however, that clonal cytogenetic anomalies -an unbalanced structural rearrangement involving the long arm of chromosome 1 and the short arm of chromosome 2 -were observed in a case with typical clinical and pathologic IPT features in lung tissue culture. 8 This report concluded that the acquired clonal chromosomal abnormalities of IPT may indicate a neoplasm rather than an inflammatory or reactive lesion.…”