Consensus document on the diagnostic algorithm for chronic nodular prurigo. / Consenso sobre el algoritmo diagnóstico del prurigo crónico nodular.

Chronic nodular prurigo (CNP) is a chronic dermatological disease characterized by the presence of chronic pruritus and pruritic nodular lesions. The aim of this study was to reach consensus among a group of experts based on a non-systematic literature review and an algorithm for the clinical diagnosis of CNP. The resulting algorithm is structured in 3 blocks: 1) early identification of the patient with a possible diagnosis of CNP; 2) diagnosis and assessment of CNP; and 3) categorization of CNP (identification of the underlying causes or associated comorbidities). We believe that this clinical algorithm can facilitate the correct diagnosis of patients with CNP. Additionally, it raises awareness on the need for a multidisciplinary approach and specific treatment of CNP, steps of paramount importance to make better therapeutic decisions.

Leiomiomatosis cutánea y uterina múltiple o síndrome de Reed: estudio retrospectivo de 13 casos / Multiple Cutaneous and Uterine Leiomyomatosis or Reed Syndrome: A Retrospective Study of 13 Cases

Introducción: La leiomiomatosis cutánea y uterina múltiple (MCUL) o síndrome de Reed se caracteriza por la presencia de leiomiomas cutáneos de origen pilar, leiomiomas uterinos en las mujeres y, en algunos casos, asociación con carcinoma renal. Este síndrome, de herencia autosómica dominante, se produce por una mutación heterocigótica en la línea germinal del gen de la fumarato hidratasa, una enzima del ciclo de Krebs que actúa como supresor tumoral. Objetivo: Revisar los casos de MCUL diagnosticados en 2 hospitales universitarios durante un periodo de 5 años (2008-2013). Material y métodos: Estudio retrospectivo de 13 casos de MCUL, en el que se recogieron características demográficas, clínicas e histológicas, así como posibles asociaciones con otras enfermedades y tratamientos recibidos. Resultados: Trece pacientes fueron diagnosticados de MCUL (10 mujeres y 3 hombres, con una edad media al diagnóstico de 53 años). El 100% de los casos presentaba leiomiomas cutáneos múltiples, distribuidos de forma difusa (69%), agrupada (92%) y/o lineal (7,7%). El 90% de las mujeres presentaba además miomas uterinos y todas ellas habían precisado histerectomía porese motivo. No encontramos ningún caso de carcinoma renal en los pacientes explorados (9/13), pero sí lesiones renales benignas (4/9). Conclusión: Describimos 13 casos de MCUL, que presentan características clínicas e histológicas similares a las descritas en la literatura, siendo la manifestación cutánea más frecuente la segmentaria tipo 2. Es importante que el dermatólogo identifique los casos de leiomiomas cutáneos y conozca su posible relación con MCUL (AU)

Introduction: Multiple cutaneous and uterine leiomyomatosis (MCUL), or Reed syndrome, is characterized by the presence of cutaneous leiomyomas arising from the arrector pili muscles and, in women, by uterine leiomyomas. In some cases, MCUL is associated with renal cell carcinoma. This syndrome is an autosomal dominant disorder caused by a heterozygous germline mutation of the gene that encodes fumarate hydratase, a Krebs cycle enzyme that acts as a tumor suppressor. Objective: To review the cases of MCUL diagnosed at 2 university hospitals over a 5-year period (2008-2013). Material and methods: This was a retrospective study of 13 cases of MCUL that investigated demographic, clinical, and histologic characteristics, as well as possible associations with other diseases and treatments received. Results: We identified 13 patients (10 women and 3 men) who had been diagnosed with MCUL. The mean age at diagnosis was 53 years. All the patients had multiple cutaneous leiomyomas; in 12 (92%) the distribution was clustered and 9 (69%) also had disseminated solitary lesions. In 1 patient (7.7%), the pattern of distribution was linear. Uterine fibroids requiring hysterectomy were present in 90% of the women. Nine patients were screened for renal lesions; no cases of renal cell carcinoma were detected but benign renal lesions were found in 4 patients. Conclusion: The clinical and histologic characteristics of the 13 cases of MCUL reviewed were similar to those reported in the literature. The most common cutaneous manifestation was a type 2 segmental pattern. It is important for dermatologists to identify cutaneous leiomyomas and be aware of the possible association with MCUL (AU)

Multiple cutaneous and uterine leiomyomatosis or reed syndrome: a retrospective study of 13 cases.

INTRODUCTION: Multiple cutaneous and uterine leiomyomatosis (MCUL), or Reed syndrome, is characterized by the presence of cutaneous leiomyomas arising from the arrector pili muscles and, in women, by uterine leiomyomas. In some cases, MCUL is associated with renal cell carcinoma. This syndrome is an autosomal dominant disorder caused by a heterozygous germline mutation of the gene that encodes fumarate hydratase, a Krebs cycle enzyme that acts as a tumor suppressor. OBJECTIVE: To review the cases of MCUL diagnosed at 2 university hospitals over a 5-year period (2008-2013). MATERIAL AND METHODS: This was a retrospective study of 13 cases of MCUL that investigated demographic, clinical, and histologic characteristics, as well as possible associations with other diseases and treatments received. RESULTS: We identified 13 patients (10 women and 3 men) who had been diagnosed with MCUL. The mean age at diagnosis was 53 years. All the patients had multiple cutaneous leiomyomas; in 12 (92%) the distribution was clustered and 9 (69%) also had disseminated solitary lesions. In 1 patient (7.7%), the pattern of distribution was linear. Uterine fibroids requiring hysterectomy were present in 90% of the women. Nine patients were screened for renal lesions; no cases of renal cell carcinoma were detected but benign renal lesions were found in 4 patients. CONCLUSION: The clinical and histologic characteristics of the 13 cases of MCUL reviewed were similar to those reported in the literature. The most common cutaneous manifestation was a type 2 segmental pattern. It is important for dermatologists to identify cutaneous leiomyomas and be aware of the possible association with MCUL.