Infestación cutánea diseminada por larva migrans / Disseminated cutaneous larva migrans infestation

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Dermatitis de contacto por pseudotatuajes en niños. A propósito de dos casos / Allergic contact dermatitis from pseudotattoing in children. Two cases report

Presentamos dos casos de dermatitis alérgica de contacto por tatuajes de henna negra. Dos niños de 11 y 4 años desarrollan prurito y enrojecimiento sobre tatuaje. No habían tenido contacto previo con tintes de pelo ni con otros tatuajes. Un caso presenta despigmentación en la zona del tatuaje. Observamos en ambos pruebas de contacto intensamente positivas para la parafenilendiamina y colorantes dispersos del grupo azo. Es probable que exista reacción cruzada entre la parafenilendiamina y colorantes del grupo azo (AU)

Postmenopausal frontal fibrosing alopecia.

Recently a new entity, postmenopausal frontal fibrosing alopecia, was added to the established subtypes of scarring alopecias affecting postmenopausal women. This condition is characterized by a progressive frontal hairline recession associated with scarring. We studied the clinical and histopathologic features in four women with this disorder. Of note, a history of bilateral oophorectomy in two of them appears to be a new association. All four cases had frontoparietal recession of the hairline and two of them also had loss of their eyebrows. None of our four patients had any mucous membrane or other skin lesions. Histological examination showed perifollicular fibrosis and lymphocytic inflammation around the isthmus and infundibular areas of the follicles. No effective treatments have emerged for this type of postmenopausal alopecia, but progression of the hair loss and scarring appears to be self-limiting. We believe that this condition is a distinct clinicopathological variant of lichen planopilaris.

Tumor de células granulares de localización cutánea múltiple. Presentación de un caso y consideraciones sobre su histogénesis / Multiple cutaneous granular cell tumor. A case report and observations relating histogenesis

El tumor de Abrikossoff o tumor de células granulares es una rara entidad y su presentación cutánea multiple es infrecuente.Se describe un caso de localización en cuello, espalda y antebrazo. Se comenta su histología, inmunohistoquímica y las hipótesis histopatogénicas más aceptadas (AU)

Mondor's disease.

BACKGROUND: Mondor's disease is a rare entity characterized by thrombophlebitis of the subcutaneous veins of the anterolateral thoraco-abdominal wall. The most common clinical manifestations are a painful subcutaneous cord, sensation of tension, and skin retraction. This condition is usually a benign and self-limited process, although it has been associated with breast cancer. METHODS: We describe four new cases, two men and two women, and comment on the clinical signs and possible etiopathogenic features. General physical examination, radiologic and ecographic studies, laboratory analysis including tumor markers, and exhaustive coagulation study were carried out on all patients. RESULTS: No cases were associated with malignant disease and/or hypercoagulability stage. With conservative treatment, the evolution proved favorable in all patients. CONCLUSIONS: Mondor's disease is usually a benign and self-limited process, but we recommend laboratory studies and physical examination, including mammography in women, in order to rule out the presence of systemic disorders, especially breast cancer.

Nonscarring alopecia associated with solitary circumscribed neuroma.

We report an unusual case of nonscarring alopecia clinically resembling patchy alopecia areata around central solitary circumscribed neuroma. Prompt and spontaneous complete hair regrowth was observed after removal of the tumor. Further knowledge of growth factor and receptor interaction in regulating the hair follicle cycle, as well as on the production of growth factors and cytokines by tumor cells and/or cells within the tumor microenvironment may contribute to better understand the pathologic mechanisms underlying certain curious phenomena such as peritumoral nonscarring alopecia.