Document Detail

Comparative clinicopathological study on pityriasis lichenoides chronica and small plaque parapsoriasis.
MedLine Citation:
PMID:  3232749     Owner:  NLM     Status:  MEDLINE    
The term parapsoriasis refers to a group of chronic asymptomatic scaly dermatoses of unknown etiology about which there is still controversy over the nosology and nomenclature of the different conditions that comprise the group, particularly pityriasis lichenoides chronica (PLC) and small plaque parapsoriasis (SPP). In an attempt to establish the distinctive clinicopathologic features of these two dermatosis, we prospectively studied 44 patients who presented with the typical clinical and histologic picture of either of these two diseases. SPP was clinically characterized by scaly oval plaques on the trunk and proximal aspect of extremities. Spongiosis was the salient histopathologic feature, with absence of fibrosis or melanophages. PLC presented with a scaly papular eruption over the trunk and extremities and histologically was characterized by an interface dermatitis. We conclude that sufficient clinical and histologic features differentiate these two entities and we propose that the term parapsoriasis be used only to designate SPP and large plaque parapsoriasis.
O Benmamán; J L Sánchez
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The American Journal of dermatopathology     Volume:  10     ISSN:  0193-1091     ISO Abbreviation:  Am J Dermatopathol     Publication Date:  1988 Jun 
Date Detail:
Created Date:  1989-04-20     Completed Date:  1989-04-20     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7911005     Medline TA:  Am J Dermatopathol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  189-96     Citation Subset:  IM    
Department of Dermatology, University of Puerto Rico, San Juan.
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MeSH Terms
Age Factors
Middle Aged
Parapsoriasis / classification,  pathology*
Pityriasis / pathology*
Prospective Studies

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