Retrospective study of pilomatricoma: 261 tumors in 239 patients.

INTRODUCTION AND OBJECTIVES: Pilomatricoma is the second most common skin tumor in childhood and youth and it has a broad differential diagnosis. The main objective of the present study was to determine the incidence of pilomatricomas in our hospital and to analyze the following variables: patient age and sex, tumor site, symptoms, previous trauma, clinical diagnosis, associated diseases, number of cases of multiple tumors, ultrasound findings, anesthetic and surgical techniques, and postoperative complications. MATERIAL AND METHOD: This was a retrospective study of the pilomatricomas surgically excised between January 2004 and December 2012 and registered in the database of the pathology department of our hospital. RESULTS: We found 261 pilomatricomas in 239 patients (120 female and 119 male) between 1 and 83 years of age (mean age, 26.4 years). The most common presentation was as a firm subcutaneous nodule, which was asymptomatic in 82% of cases. Tumors most commonly affected the head and neck (49.81%). Preoperative diagnosis was correct in 54.4% of cases, concomitant diseases were present in 59 cases, and 7 patients reported a history of trauma in the area of the tumor. There were 17 cases of multiple tumors, 1 case in a patient with familial disease and 2 in patients with Steinert disease. Soft-tissue ultrasound was performed on 57 lesions; images were compatible with pilomatricoma in 48 cases. Tumor excision was performed under local anesthesia in 185 cases and under local and general anesthesia in 76. The postoperative complications were hypertrophic scarring and wound dehiscence (1 case each). CONCLUSIONS: This was a retrospective study with the largest series recorded in Spain and with one of the highest incidences. In addition, we report on variables not described in other studies.

Dermatitis alérgica de contacto por Dittrichia viscosa / Allergic Contact Dermatitis Due to Dittrichia viscosa

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Osificación bilateral del cartílago auricular / Bilateral Ossification of the Auricular Cartilage

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Estudio retrospectivo de pilomatricomas: 261 tumores en 239 pacientes / Retrospective Study of Pilomatricoma: 261 Tumors in 239 Patients

INTRODUCCIÓN Y OBJETIVOS: El pilomatricoma es la segunda neoformación cutánea más frecuente en la infancia y la juventud, con un amplio diagnóstico diferencial. El objetivo principal del estudio fue determinar la incidencia de pilomatricomas en nuestro hospital y sus características en relación con: edad, sexo, localización, síntomas, traumatismo previo, diagnóstico clínico, enfermedades asociadas, casos múltiples, características ecográficas, tratamiento quirúrgico y técnica anestésica y complicaciones posteriores. MATERIAL Y MÉTODO: Se recogieron de forma retrospectiva los pilomatricomas extirpados quirúrgicamente en nuestro hospital de enero de 2004 a diciembre de 2012 a partir de la base de datos de anatomía patológica. RESULTADOS: Se estudiaron 261 pilomatricomas en 239 pacientes, 120 eran mujeres y 119 varones de edades comprendidas entre 1 y 83 años, con una media de 26,4 años. La forma de presentación más frecuente fue como un nódulo firme, subcutáneo, asintomático en el 82% de los casos. La localización más frecuente fue la cabeza y el cuello (49,81%). El diagnóstico clínico preoperatorio fue acertado en el 54,4%. Cincuenta y nueve pacientes tenían otras enfermedades y 7 recordaban traumatismo previo en la zona. Se registraron 17 casos múltiples, uno familiar, y 2 en pacientes con enfermedad de Steinert. En 57 lesiones se realizó ecografía de partes blandas, con imágenes compatibles con pilomatricoma en 48. Ciento ochenta y cinco pilomatricomas se extirparon con anestesia local y 76 con anestesia local y general. Como complicaciones posquirúrgicas hubo un caso de cicatriz hipertrófica y otro de dehiscencia. CONCLUSIONES: El nuestro es el estudio retrospectivo que recoge el mayor número de casos en nuestro país y uno de los que comunica mayor incidencia de casos. Además, se estudian variables no recogidas en otras series

BACKGROUND AND OBJECTIVES: Pilomatricoma is the second most common skin tumor in childhood and youth and it has a broad differential diagnosis. The main objective of the present study was to determine the incidence of pilomatricomas in our hospital and to analyze the following variables: patient age and sex, tumor site, symptoms, previous trauma, clinical diagnosis, associated diseases, number of cases of multiple tumors, ultrasound findings, anesthetic and surgical techniques, and postoperative complications. MATERIAL AND METHOD: This was a retrospective study of the pilomatricomas surgically excised between January 2004 and December 2012 and registered in the database of the pathology department of our hospital. RESULTS: We found 261 pilomatricomas in 239 patients (120 female and 119 male) between 1 and 83 years of age (mean age, 26.4 years). The most common presentation was as a firm subcutaneous nodule, which was asymptomatic in 82% of cases. Tumors most commonly affected the head and neck (49.81%). Preoperative diagnosis was correct in 54.4% of cases, concomitant diseases were present in 59 cases, and 7 patients reported a history of trauma in the area of the tumor. There were 17 cases of multiple tumors, 1 case in a patient with familial disease and 2 in patients with Steinert disease. Soft-tissue ultrasound was performed on 57 lesions; images were compatible with pilomatricoma in 48 cases. Tumor excision was performed under local anesthesia in 185 cases and under local and general anesthesia in 76. The postoperative complications were hypertrophic scarring and wound dehiscence (1 case each). CONCLUSIONS: This was a retrospective study with the largest series recorded in Spain and with one of the highest incidences. In addition, we report on variables not described in other studies