title: Pulmonary hyalinizing granuloma
text: # Pulmonary hyalinizing granuloma
  
  Pulmonary hyalinizing granuloma is a lesional pattern of pulmonary inflammatory pseudotumor.
  
  ## Pathology
  
  Pulmonary hyalinizing granuloma is characterized by localized changes in lung architecture determined by deposition of hyaline collagenous fibrosis accompanied by sparse lymphocytic infiltrate that compresses and distorts the remaining bronchioles. A higher magnification, the mass is composed by hypocellular collagen lamellae.
  
  ## Associations
  
  * Morvan Syndrome
  * HIV/AIDS
  * Posterior uveitis
  * Castleman's disease
  