ABSTRACT
Abstract: Trichilemmal carcinoma is a rare adnexal neoplasia with histologic features reminiscent of the outer root sheath of hair follicles. The clinical presentation of trichilemmal carcinoma is variable, as it may mimic basal cell carcinomas and squamous cell carcinomas, thus requiring histologic diagnosis. We report the case of a patient with aggressive trichilemmal carcinoma in the auricle.
Subject(s)
Humans , Male , Aged, 80 and over , Skin Neoplasms/pathology , Carcinoma, Skin Appendage/pathology , Hair Follicle/pathology , Ear Auricle/pathology , Skin Neoplasms/surgery , Carcinoma, Skin Appendage/surgery , Ear Auricle/surgeryABSTRACT
INTRODUÇÃO: O carcinoma triquilemal (CT) é uma neoplasia rara dos anexos cutâneos. Foi descrito pela primeira vez em 1968, como tricoleptocarcinoma, e tem incidência de 0,05% em pacientes submetidos a exame histopatológico após excisão de lesões cutâneas. Parece ser um tumor de baixa agressividade, porém, relatos na literatura colocam em dúvida tal comportamento indolente. OBJETIVOS: Oferecer uma atualização sobre manejo e prognóstico do CT. MÉTODOS: Pesquisa no PubMed e SciELO com os termos MeSH "trichilemmal carcinoma", "tricholemmal carcinoma", "adnexal skin tumor", "carcinoma triquilemal". RESULTADOS: Devido a sua raridade, a maior parte da literatura se baseia em relatos de caso, os quais na sua maioria corroboram a natureza indolente da doença. Excisão cirúrgica é o tratamento preconizado, com baixo risco de recidiva e baixa morbimortalidade. CONCLUSÃO: O comportamento da lesão e as condutas no tratamento do CT baseiam-se em casos isolados ou de pequenas séries de casos. Devido a sua baixa prevalência, uma colaboração multicêntrica agrupando um maior número de casos pode ajudar a definir melhor recomendações de tratamento, fisiopatologia e prognóstico. Excisão cirúrgica continua a ser o padrão-ouro de tratamento, com baixo risco de recidiva.
INTRODUCTION: Trichilemmal carcinoma (TC) is a rare neoplasm of skin appendages. It was first described in 1968 as tricoleptocarcinoma, and has an incidence of 0.05% in patients subjected to histopathological examination after excision of cutaneous lesions. TC has an indolent clinical course ; however, reports in the literature put in doubt this indolent behavior. OBJECTIVES: To provide an update on the management and prognosis of TC. METHODS:A search of the PubMed and SciELO databases by using with the MeSH terms "trichilemmal carcinoma", "tricholemmal carcinoma", "adnexal skin tumor", and "carcinoma triquilemal" was performed. RESULTS: Owing to the rarity of TC, most studies were case reports, which essentially corroborate the indolent nature of the disease. Surgical excision is the recommended treatment, and is associated with a low risk of recurrence and low morbidity and mortality. CONCLUSION: The behavior of the lesion and the procedure of treatment of TC are based on isolated cases or in a small series of cases. Because of its low prevalence, a multicenter collaboration of a greater number of cases can help define the best treatment recommendations, pathophysiology, and prognosis. Surgical excision remains the gold standard of treatment, and is associated with a low risk of recurrence.
Subject(s)
Humans , Male , Female , Aged , History, 21st Century , Prognosis , Scalp , Skin Neoplasms , Surgical Procedures, Operative , Wounds and Injuries , Review , Neoplasms, Adnexal and Skin Appendage , Carcinoma, Skin Appendage , Rare Diseases , Head and Neck Neoplasms , Medical Oncology , Scalp/surgery , Scalp/pathology , Skin Neoplasms/surgery , Surgical Procedures, Operative/methods , Wounds and Injuries/surgery , Wounds and Injuries/pathology , Neoplasms, Adnexal and Skin Appendage/surgery , Neoplasms, Adnexal and Skin Appendage/pathology , Carcinoma, Skin Appendage/surgery , Rare Diseases/pathology , Head and Neck Neoplasms/surgery , Medical Oncology/methodsABSTRACT
The microcystic adnexal carcinoma is a rare, locally aggressive malignant adnexal neoplasm associated with signifi cant morbidity. It is often underdiagnosed due to clinical and histopathological resemblance with other cutaneous neoplasms and / or a combination of lack of familiarity associated with inadequate samples. We report a case with clinical hypothesis of scarring alopecia and histopathological diagnosis of microcystic adnexal carcinoma with favorable outcome in a follow-up of eleven years, after surgical treatment.
.Subject(s)
Aged , Female , Humans , Alopecia/pathology , Carcinoma, Skin Appendage/pathology , Skin Neoplasms/pathology , Biopsy , Carcinoma, Skin Appendage/surgery , Diagnosis, Differential , Scalp/pathology , Skin Neoplasms/surgery , Treatment OutcomeABSTRACT
El carcinoma anexial microquístico, también llamado carcinoma esclerosante de conductos sudoríparos, fue descripto por primera vez por Goldstein y cols. en 1982. Desde entonces varias presentaciones de este tumor han ayudado a definir sus características. Nosotros publicamos un caso de presentación clínica e histopatológica típica y hacemos una revisión de la literatura poniendo énfasis en el tratamiento que en nuestro caso se efectuó mediante la extirpación quirúrgica amplia de la lesión