Chronic eosinophilic pneumonia due to radiographic contrast administration: an orphan disease?

Pulmonary eosinophilia comprises a heterogeneous group of diseases that are defined by eosinophilia in pulmonary infiltrates or in tissue. Drugs can cause almost all histopathologic patterns of interstitial pneumonias, such as cellular and fibrotic nonspecific interstitial pneumonia, pulmonary infiltrates and eosinophilia, organizing pneumonia, lymphocytic interstitial pneumonia, desquamative interstitial pneumonia, a pulmonary granulomatosis-like reaction, and a usual interstitial pneumonia-like pattern. We present a very rare case of chronic eosinophilic pneumonia due to radiographic contrast infusion diagnosed with video-assisted thoracoscopy.

Glomus tumor in the lung parenchyma.

Glomus tumors are uncommon lesions of glomus cell origin with ultrastructural and immunohistochemical features of smooth muscle. In the majority of the cases reported in the literature glomus tumors are benign, but there are some rare cases in which they demonstrate aggressive and malignant clinical and histological features. Glomangiosarcomas of the lung are extremely rare malignant tumors, because of the fact that glomus bodies are rare or absent.

Solitary papillomas of the lower airways: epidemiological, clinical, and therapeutic data during a 22-year period and review of the literature.

Introduction: Solitary respiratory papillomas (SRPs) are considered uncommon yet benign neoplasms of the lower respiratory tract. Most of our understanding stems from single case reports or limited case series.

Objective: To determine the incidence of solitary SRPs and more accurately describe the localization, distribution of subtypes of solitary SRPs, clinical features, and the risk of malignant transformation.