Garrido Colmenero, CristinaMartín Castro, AurelioValenzuela Salas, IgnacioMartínez García, EliseoBlasco Morente, GonzaloTercedor Sánchez, Jesús2013-11-062013-11-062013-09-30Garrido Colmenero C, Martín Castro A, Valenzuela Salas I, Martínez García E, Blasco Morente G, Tercedor Sánchez J. Squamous cell carcinoma in lichen planopilaris. J Dermatol Case Rep; 7(3):84-7http://hdl.handle.net/10668/1370Journal Article;BACKGROUND Lichen planopilaris (LPP) is a rare variant of cutaneous lichen planus that preferentially involves hair follicles. OBSERVATION We describe the case of an 87-year-old woman with cicatricial alopecia due to lichen planopilaris. The diagnosis was based on clinical evaluation, histopathology and trichoscopy. Squamous cell carcinoma developed within the hairless area after 18 years of evolution. CONCLUSION It is necessary to consider the association between lichen planopilaris and squamous cell carcinoma and to ensure a close follow-up of LPP patients, especially when there is a long history of the disease or new a lesion develops, which does not correspond clinically or in trichoscopy to lichen planopilaris.enlichen planopilarissquamous cell carcinomacicatricial alopeciaLiquen PlanoMedical Subject Headings::Diseases::Skin and Connective Tissue Diseases::Skin Diseases::Skin Diseases, Papulosquamous::Lichenoid Eruptions::Lichen PlanusMedical Subject Headings::Diseases::Pathological Conditions, Signs and Symptoms::Pathological Conditions, Anatomical::AlopeciaMedical Subject Headings::Diseases::Neoplasms::Neoplasms by Histologic Type::Neoplasms, Glandular and Epithelial::Neoplasms, Squamous CellMedical Subject Headings::Named Groups::Persons::WomenMedical Subject Headings::Named Groups::Persons::Age Groups::Adult::Aged::Aged, 80 and overresearch article24133562open access10.3315/jdcr.2013.11471898-7249