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Vol. 99. Issue 4.
Pages 297-300 (May 2008)
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Vol. 99. Issue 4.
Pages 297-300 (May 2008)
Case report
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A Case of Cutaneous Extramedullary Hematopoiesis Associated with Idiopathic Myelofibrosis
Hematopoyesis Extramedular Cutánea en Mielofibrosis Idiopática: A Propósito de un Caso
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F. Corellaa,
Corresponding author
fcorella@santpau.es

Correspondence: Departamento de Dermatología, Hospital Santa Creu i Sant Pau, Sant Antoni Maria Claret, 167, 08025 Barcelona, Spain.
, M.A. Barnadasa, R. Bordesb, R. Curellb, I. Espinosab, C. Vergarab, A. Alomara
a Servicio de Dermatología, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
b Servicio de Anatomía Patológica, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
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Abstract

Cutaneous extramedullary hematopoiesis is a rare manifestation of chronic myeloproliferative processes, mainly chronic idiopathic myelofibrosis. In adults, it manifests as macules, papules, nodules, and ulcers on the trunk. The lesions usually appear soon after diagnosis and the possibility of a relationship between splenectomy and the appearance of extramedullary foci of hematopoiesis is still debated. Diagnosis is based on histopathology showing an infiltrate with different combinations of myeloid and erythroid cell precursors and megakaryocytes. Symptomatic treatment is provided alongside treatment of the underlying disease. We report a new case associated with chronic idiopathic myelofibrosis in which foci of cutaneous extramedullary hematopoiesis were observed 9 years after initial diagnosis. The lesions were progressive and the patient went on to develop acute myeloid leukemia.

Key words:
extramedullary hematopoiesis
idiopathic myelofibrosis
erythroid precursors
myeloid precursors
megakaryocytes
Resumen

La hematopoyesis extramedular cutánea es una manifestación infrecuente de los procesos mieloproliferativos crónicos, principalmente de la mielofibrosis crónica idiopática. En el adulto se manifiesta como máculas, pápulas, nódulos y úlceras en el tronco. La aparición suele darse poco después del diagnóstico y todavía es una cuestión debatida la posible relación entre la esplenectomía y la aparición de los focos de hematopoyesis extramedular. El diagnóstico se realiza mediante estudio histopatológico y la visualización de un infiltrado compuesto por diferentes combinaciones de precursores mieloides, eritroides y células megacariocíticas. El tratamiento es sintomático y el propio de la enfermedad de base. Aportamos un nuevo caso asociado a mielofibrosis crónica idiopática que a los 9 años del diagnóstico presentó focos de hematopoyesis extramedular cutánea. Dichas lesiones siguieron un curso progresivo, desarrollando posteriormente una leucemia mieloide aguda.

Palabras clave:
hematopoyesis extramedular
mielofibrosis idiopática
precursores eritroides
mieloides y megacariocitos
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Copyright © 2008. Academia Española de Dermatología y Venereología and Elsevier España, S.L.
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