Preferred Label : Interstitial pneumonitis, desquamative, familial;
Symbol : DIP;
CISMeF acronym : DIP;
Type : Phenotype or locus, molecular basis unknown;
Alternative titles and symbols : Interstitial lung disease, desquamative; Pneumonia, desquamative interstitial, familial; Pneumonitis, desquamative interstitial, familial; Ild, desquamative;
Description : Interstitial lung disease (ILD), or pneumonitis, is a heterogeneous group of disorders
characterized pathologically by expansion of the interstitial compartment of the lung
by inflammatory cells. Fibrosis occurs in many cases (Visscher and Myers, 2006). Desquamative
interstitial pneumonitis (DIP) was originally described as a pathologic entity by
Liebow et al. (1965). Lung biopsy shows diffuse and uniform filling of alveoli by
clusters of cells which Liebow et al. (1965) speculated to be 'desquamated pneumocytes.'
Since then, these cells have been shown primarily to be pigmented alveolar macrophages.
Other features include thickened alveolar septa with an infiltrate of inflammatory
cells and plump, cuboidal type II pneumocytes. Mild collagen deposition without architectural
distortion or honeycombing may be present. Different forms of ILD represent pathologic
classifications based on histologic patterns rather than clinical diagnoses and may
occur in a variety of clinical contexts (Visscher and Myers, 2006). See also usual
interstitial pneumonitis (UIP; see 178500), which is associated with pulmonary fibrosis.
Although DIP occurs most often as a sporadic disorder in adults during the third to
fifth decade of life and is highly associated with smoking (Carrington et al., 1978),
reports of a familial form with onset in infancy and early death suggest a genetic
basis (Sharief et al., 1994). Cases of DIP reported in infants are often more severe
and refractory to treatment than those reported in adults (Nogee et al., 2001). With
the advent of molecular genetic analysis, some cases of familial early-onset respiratory
insufficiency associated with a pathologic diagnosis of DIP have been shown to result
from congenital dysfunction of surfactant metabolism (see, e.g., SMDP1, 265120) due
to mutations in genes involved in surfactant metabolism (Nogee et al., 2001; Whitsett
and Weaver, 2002).;
Inheritance : Autosomal recessive;
Laboratory abnormalities : Hypoxia;
Prefixed ID : %263000;
Origin ID : 263000;
UMLS CUI : C0238378;
Automatic exact mappings (from CISMeF team)
Currated CISMeF NLP mapping
DO Cross reference
False automatic mappings
HPO term(s)
Matching ORDO disease(s)
ORDO concept(s)
Semantic type(s)
UMLS correspondences (same concept)
Validated automatic mappings to NTBT