Emilio del Río

Sebomatricoma: a unifying term that encompasses all benign neoplasms with sebaceous differentiation.

Literature regarding neoplasms with sebaceous differentiation is confusing, particularly concerning the concept of sebaceous epithelioma, accepted by some observers as a specific neoplasm but defined by others as basal cell carcinoma with sebaceous differentiation and still others as sebaceous adenoma in which undifferentiated basaloid cells predominate. From our study of 19 benign sebaceous neoplasms within this spectrum and a critical review of the literature, we conclude that (a) “sebaceous epithelioma” is a nonuseful term; (b) the term “basal cell carcinoma with sebaceous differentiation” should be used only for an otherwise conventional basal cell carcinoma with histological evidence of sebaceous differentiation; (c) “sebaceous adenoma,” as described by Rulon and Helwig, and “sebaceoma,” as described by Troy and Ackerman, represent polar ends of the spectrum of a benign neoplasm with varying degrees of sebaceous differentiation, for which we propose the term “sebomatricoma” and (d) sebomatricoma, so defined, embraces such diverse benign neoplasms with sebaceous differentiation as superficial epithelioma with sebaceous differentiation and previously “unclassifiable” sebaceous neoplasms, often found in patients with Muir–Torre syndrome or within nevus sebaceus of Jadassohn.

Fixed exanthema induced by ultraviolet radiation

An unusual cutaneous eruption of the feet and lower limbs induced by ultraviolet radiation in a 30-year-old caucasian man is presented. Previous reports in the literature and the present case indicate that sunlight and UV radiation may provoke fixed eruptions themselves without drug exposure.

Breve historia de Actas Dermo-Sifiliográficas

Resumen Actas Dermo-Sifiliograficas fue fundada por Juan de Azua en mayo de 1909. El nacimiento de la revista se produjo a la vez que la fundacion de la Academia Espanola de Dermatologia y Venereologia, llamada entonces Sociedad Espanola de Dermatologia y Sifiliografia, y de la que es el organo oficial de expresion. Actas Dermo-Sifiliograficas se consolido progresivamente hasta 1936. La publicacion quedo interrumpida durante 14 meses al comienzo de la Guerra Civil. Recupero su actividad en octubre de 1937 de la mano de Sainz de Aja, Gay Prieto y Eduardo de Gregorio. En la decada de 1980 sufrio una cierta crisis que condiciono su exclusion del MEDLINE. La progresiva recuperacion de Actas Dermo-Sifiliograficas en las sucesivas gestiones de los doctores Iglesias, Sanchez Yus, Fdez. Herrera y Torrelo han conseguido finalmente devolverla a la base de datos medica mas consultada del mundo.

Stimulation of folliculo‐sebaceous proliferations by neurofibromas: a report of two cases

Two unrelated patients, a woman aged 44 and a man aged 56, with a type I neurofibromatosis, showed comedo‐like formations at the top of some neurofibromas. One of them was excised in each case and they were studied histopathologically. The comedo‐like formation of the first case mimicked the epithelial component of a fibrofolliculoma, and that of the second case had the structure of a primary late microcomedo and showed also anagen hair differentiation in the form of a follicular bulb and papilla. Both events are considered to be the result of a stimulation phenomenon and to reflect the essential role of the stroma in many cutaneous epithelial hyperplasias, hamartomas and possibly in some neoplasms.

INTRAVASCULAR PAPILLARY ENDOTHELIAL HYPERPLASIA: A REORGANIZING THROMBUS

A 31-year-old healthy woman consulted us for an asymptomatic nodule on the volar aspect of the third finger of the left hand (Fig, 1), This lesion had appeared spontaneously 3 months prior. It was somewhat masked by the shape of the finger, but the color and the discrete dome-shaped prominence revealed it clearly; a nonpainful, but tender, nodule 8 mm in size was evident on palpation. It was reddish-blue, blanching on pressure, thus suggesting vascular origin. It was shelled out easily from adjacent tissues by surgical excision, A 7-mm bloody mass was obtained, Histopathologic examination showed a mid-sized thinwalled dilated vein completely occupied by a large thrombus with two different areas (Fig, 2), The outer part was mainly solid and hypocellular, while the inner portion was markedly cellular (Fig, 3), Several small channels and transversely sectioned papillary structures could be observed. All these findings were consistent with an intravascular papillary endothelial hyperplasia. The lesion did not recur 15 months after excision.

Hernia umbilical con endometriosis

Resumen —Presentamos el caso de una mujer de 35 anos con un nodulo umbilical violaceo y doloroso adherido al saco de una hernia umbilical. Histologicamente se observan glandulas endometriales proliferativas en la dermis sin alcanzar el paniculo adiposo. La particularidad del caso reside en la localizacion unicamente cutanea de la endometriosis y su asociacion a una hernia umbilical.