The relevance of recognizing clinical and morphologic features of pityriasis lichenoides: clinicopathological study of 29 cases

Background: Pityriasis lichenoides (PL) is a lymphoproliferative disease of unknown origin; its diagnosis is based on clinical characteristics and confirmed by histology. Objectives: To describe clinical and histological features of PL in 29 pediatric patients. Materials and Methods: Retrospe...

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Autores principales:	Jandrei Rogério Markus, Vânia Oliveira Carvalho, Monica Nunes Lima, Kerstin Taniguchi Abagge, Alexandre Nascimento, Betina Werner
Formato:	article
Lenguaje:	EN
Publicado:	Mattioli1885 2013
Materias:	Dermatology RL1-803
Acceso en línea:	https://doaj.org/article/764b0444e65147e3a9e4dec2f5558df3
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spelling	oai:doaj.org-article:764b0444e65147e3a9e4dec2f5558df32021-11-17T08:32:40ZThe relevance of recognizing clinical and morphologic features of pityriasis lichenoides: clinicopathological study of 29 cases10.5826/dpc.0304a022160-9381https://doaj.org/article/764b0444e65147e3a9e4dec2f5558df32013-10-01T00:00:00Zhttp://dpcj.org/index.php/dpc/article/view/920https://doaj.org/toc/2160-9381 Background: Pityriasis lichenoides (PL) is a lymphoproliferative disease of unknown origin; its diagnosis is based on clinical characteristics and confirmed by histology. Objectives: To describe clinical and histological features of PL in 29 pediatric patients. Materials and Methods: Retrospective descriptive study of children (patients less than 15 years old) diagnosed with PL between 1986 and 2010 at a Reference Service in Pediatric Dermatology from South Brazil. Results: Twenty-nine PL cases were found by chart review in 24 years. Mean age of diagnosis was 8 years (22 to 178 months) and a mean time of diagnosis was 13.8 months (1 to 120 months). Twenty cases (69%) were male. Seasonal correlation was found with colder months in 62% of cases (p< 0.01). Clinical diagnosis was pityriasis lichenoides chronica (PLC) in 25 cases, and pityriasis lichenoides et varioliformis acuta (PLEVA) in four. Itching was the main reported symptom occurring in 13 (45%). Fourteen cases had been histologically evaluated. In six, microscopic findings were consistent with PLC, in four consistent with PLEVA, and four biopsies exhibited mixed characteristics of both forms. Concordance between clinical and histological diagnosis was seen in most cases. Conclusion: PL occurs in children and young adults, more commonly in males, and during cold months. PLC was the more frequent clinicohistologic form, and necrotic lesions characterized PLEVA. Associating clinical and histological findings is important for differentiating between PLC and PLEVA diagnosis. Jandrei Rogério MarkusVânia Oliveira CarvalhoMonica Nunes LimaKerstin Taniguchi AbaggeAlexandre NascimentoBetina WernerMattioli1885articleDermatologyRL1-803ENDermatology Practical & Conceptual (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Dermatology RL1-803
spellingShingle	Dermatology RL1-803 Jandrei Rogério Markus Vânia Oliveira Carvalho Monica Nunes Lima Kerstin Taniguchi Abagge Alexandre Nascimento Betina Werner The relevance of recognizing clinical and morphologic features of pityriasis lichenoides: clinicopathological study of 29 cases
description	Background: Pityriasis lichenoides (PL) is a lymphoproliferative disease of unknown origin; its diagnosis is based on clinical characteristics and confirmed by histology. Objectives: To describe clinical and histological features of PL in 29 pediatric patients. Materials and Methods: Retrospective descriptive study of children (patients less than 15 years old) diagnosed with PL between 1986 and 2010 at a Reference Service in Pediatric Dermatology from South Brazil. Results: Twenty-nine PL cases were found by chart review in 24 years. Mean age of diagnosis was 8 years (22 to 178 months) and a mean time of diagnosis was 13.8 months (1 to 120 months). Twenty cases (69%) were male. Seasonal correlation was found with colder months in 62% of cases (p< 0.01). Clinical diagnosis was pityriasis lichenoides chronica (PLC) in 25 cases, and pityriasis lichenoides et varioliformis acuta (PLEVA) in four. Itching was the main reported symptom occurring in 13 (45%). Fourteen cases had been histologically evaluated. In six, microscopic findings were consistent with PLC, in four consistent with PLEVA, and four biopsies exhibited mixed characteristics of both forms. Concordance between clinical and histological diagnosis was seen in most cases. Conclusion: PL occurs in children and young adults, more commonly in males, and during cold months. PLC was the more frequent clinicohistologic form, and necrotic lesions characterized PLEVA. Associating clinical and histological findings is important for differentiating between PLC and PLEVA diagnosis.
format	article
author	Jandrei Rogério Markus Vânia Oliveira Carvalho Monica Nunes Lima Kerstin Taniguchi Abagge Alexandre Nascimento Betina Werner
author_facet	Jandrei Rogério Markus Vânia Oliveira Carvalho Monica Nunes Lima Kerstin Taniguchi Abagge Alexandre Nascimento Betina Werner
author_sort	Jandrei Rogério Markus
title	The relevance of recognizing clinical and morphologic features of pityriasis lichenoides: clinicopathological study of 29 cases
title_short	The relevance of recognizing clinical and morphologic features of pityriasis lichenoides: clinicopathological study of 29 cases
title_full	The relevance of recognizing clinical and morphologic features of pityriasis lichenoides: clinicopathological study of 29 cases
title_fullStr	The relevance of recognizing clinical and morphologic features of pityriasis lichenoides: clinicopathological study of 29 cases
title_full_unstemmed	The relevance of recognizing clinical and morphologic features of pityriasis lichenoides: clinicopathological study of 29 cases
title_sort	relevance of recognizing clinical and morphologic features of pityriasis lichenoides: clinicopathological study of 29 cases
publisher	Mattioli1885
publishDate	2013
url	https://doaj.org/article/764b0444e65147e3a9e4dec2f5558df3
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The relevance of recognizing clinical and morphologic features of pityriasis lichenoides: clinicopathological study of 29 cases

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