Right Middle Lobe Collapse

Benign endobronchial granular cell tumor resulting in right middle lobe collapse.

Granular cell tumors (GCTs) are generally benign neoplastic tumors of neural origin that have little malignant potential. These tumors may occur in any location, including the tracheobronchial tree. Although an endobronchial location is believed to represent a small percentage of cases, GCTs should be included in the differential considerations of any endobronchial lesions leading to airway col...

Tracheobronchopathia osteochondroplastica presenting as right middle lobe collapse. Diagnosis by bronchoscopy and computerized tomography.

Tracheobronchopathia osteochondroplastica (TO) is a rarely described disorder which historically has not been frequently recognized antemortem. Studies by computerized tomography (CT) and bronchoscopy now permit a definitive antemortem diagnosis and can obviate a more invasive diagnostic evaluation. We describe two cases of TO presenting as right middle lobe collapse, discuss the clinical and p...

Right middle lobe syndrome in sisters.

Outcome after right middle lobe syndrome.

The long-term pulmonary consequences of right middle lobe syndrome (RMLS) in childhood are not known. Therefore, outcome was evaluated in 17 children with RMLS diagnosed in early childhood (mean age, 3.3 years; SD, 1.1 year). Mean age at follow-up was 10.1 years (SD, 2.6 years). RMLS was defined as atelectasis of the right middle lobe (RML) of at least 1 month's duration and visible on the late...

Infectious Causes of Right Middle Lobe Syndrome.

Right middle lobe (RML) syndrome is defined as recurrent or chronic obstruction or infection of the middle lobe of the right lung. Nonobstructive causes of middle lobe syndrome include inflammatory processes and defects in the bronchial anatomy and collateral ventilation. We report on 2 case patients with RML syndrome, one due to infection with Mycobacterium avium complex followed by M asiaticu...