RESUMO
A pilomatricoma, also known as pilomatrixoma or calcifying epithelioma of Malherbe, is a benign skin tumor arising from the hair follicle matrix. This tumor is common in children and young adults, especially in the head and neck region. However, pilomatricomas are frequently misdiagnosed or not recognized. The history is typical of a slowly enlarging mass, irregularly contoured, it is fixed to the skin but slides freely over the, underlying tissues, often with a discolouration which varies from red to purple-bluish. Ultrasound examination, MRI-scan and fine-needle aspiration can be helpful if the diagnosis is uncertain. Spontaneous regression has never been observed and malignant degeneration is very rare. Surgical excision with clear margins is the treatment of choice, otherwise recurrence may occur due to incomplete resection.
Assuntos
Doenças do Cabelo/diagnóstico , Pilomatrixoma/diagnóstico , Neoplasias Cutâneas/diagnóstico , Criança , Pré-Escolar , Feminino , Doenças do Cabelo/cirurgia , Humanos , Lactente , Pilomatrixoma/cirurgia , Neoplasias Cutâneas/cirurgia , Adulto JovemRESUMO
The popularity of croissant-type tissue expanders has increased steadily during the past 5 years. Croissant-shaped expansion offers the advantage of creating a tailored skin flap that is advanced easily into an elliptical skin defect without the formation of dog-ears or without the need for backcuts in the expanded flap. Because the majority of lesions can be considered elliptical in shape, surgical removal is performed easily with an adapted croissant expander. We present a simple mathematical formula for calculating the exact dimensions of the required croissant expander. A good clinical result was obtained using this formula to design large custom-made croissant tissue expanders in a patient with a giant nevus.
Assuntos
Modelos Teóricos , Retalhos Cirúrgicos , Dispositivos para Expansão de Tecidos , Criança , Feminino , Humanos , Nevo Pigmentado/cirurgia , Neoplasias Cutâneas/cirurgiaRESUMO
A new type of V- or W-shaped intralesional incision for tissue expander insertion is presented. The experience with 50 of these incisions in 36 consecutive patients in the period 1990-93 without any complication has proved the safety of this approach and the advantages of V- or W-shaped incisions over tangential or radial incisions.