UNASSIGNED: In the 2013 reclassification of the @entity16058 ( @entity16058 ), two rare @entity16058 ( @entity16058 ( @entity10487 ), @entity3762 ( @entity3762 )) and two rare histologic patterns (acute fibrinous and @entity3616 (AFOP), bronchiolocentric pattern of @entity401 (BPIP)) are described. All these entities are rare with small series published to date, mostly containing primary and secondary forms of disease. @entity10487 is histologically characterized by diffuse polyclonal lymphoid cell infiltrate surrounding the airways and expanding the interstitium. Thin-walled cysts and diffuse ground glass are considered the typical radiologic features. The clinical course is highly variable with corticosteroid responsiveness evident in approximately half of cases. @entity3762 is defined histologically by coexisting @entity82 with @entity2652 . Dense @entity82 and consolidation are the cardinal radiologic features. A history of recurrent lower respiratory tract @entity281 is frequent. Responses to immunomodulation have not been reported and the rate of progression appears to be highly variable. AFOP is a rare histologic pattern lying within the spectrum of acute/subacute @entity651 , characterized by @entity3616 and @entity133 without hyaline membranes. BPIP is characterized histologically by @entity82 and/or inflammation confined to the alveolar interstitium around bronchovascular bundles, overlapping with peribronchial @entity4648 and @entity82 in some series. Currently, AFOP and BPIP are both best viewed as histological entities rather than true clinical disorders, in the absence of characteristic associated imaging patterns and clinical features.

Rare @entity16058 : XXXX and PPFE and rare histologic patterns of @entity401 : AFOP and BPIP.

@entity82 :: ('MESH:D005355', 'Disease') :: ['upper lobe pleural and intra-alveolar fibrosis', 'fibrosis', 'subpleural irregular fibrosis'] @entity16058 :: ('MESH:D054988', 'Disease') :: ['idiopathic lymphoid interstitial pneumonia', 'idiopathic interstitial pneumonias', 'IIPs'] @entity2652 :: ('MESH:D005148', 'Disease') :: ['elastosis'] @entity3616 :: ('MESH:D018549', 'Disease') :: ['organizing pneumonia'] @entity10487 :: ('MESH:C562489', 'Disease') :: ['LIP'] @entity651 :: ('MESH:D055370', 'Disease') :: ['lung injury'] @entity133 :: ('MESH:D002282', 'Disease') :: ['intra-alveolar fibrin deposition'] @entity281 :: ('MESH:D007239', 'Disease') :: ['infection'] @entity4648 :: ('MESH:D008679', 'Disease') :: ['metaplasia'] @entity401 :: ('MESH:D017563', 'Disease') :: ['interstitial pneumonia'] @entity3762 :: ('MESH:C562694', 'Disease') :: ['idiopathic pleuroparenchymal fibroelastosis', 'IPPFE']
@entity10487 :: (MESH:C562489,Disease) :: ['LIP']
