Estudio de perfil de expresión genética en micosis fungoide como marcador pronóstico
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2024
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23/05/2023
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Universidad Complutense de Madrid
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Abstract
La micosis fungoide es el linfoma primario cutáneo de células T más frecuente.(1) Se caracteriza por la infiltración de células T tumorales (en la mayoría de los casos linfocitos T helper de memoria CD3+ CD4+) con epidermotropismo.(2) El diagnóstico se basa principalmente en la correlación clínico patológica, y en la presencia o no de clonalidad. Aun así, pueden pasar años desde el inicio de la clínica hasta el diagnóstico definitivo porque la enfermedad puede simular clínica e histológicamente otros procesos inflamatorios y porque su presentación clínicopatológica encarna un amplio abanico.(3-5) Puede presentarse como placas, lesiones diseminadas, eritrodermia, tumores, mucinosis folicular, poiquilodermia y un amplio espectro de lesiones clínicas diferentes.(6)Además de la extensa variedad de presentaciones clínicas e histológicas, el pronóstico de estos linfomas depende entre otros factores de la edad de presentación, la afectación extra cutánea o la expresión leucémica.(7-12)Inicialmente el paciente presenta manchas o placas y esta forma se considera una micosis fungoide inicial.(4) La consideración de micosis fungoide avanzada se alcanza cuando el paciente presenta alguno de los siguientes: tumores, eritrodermia, afectación de ganglios, afectación en sangre o metástasis.(7)...
Mycosis fungoides is the most frequent T cell cutaneous lymphoma.(1) Histologically it is characterised by the epidermotropic infiltration of tumor T cells and, in the majority of the cases by lymphocytes T helper CD3+ CD4+.(2) Diagnosis is made by clinical and histological correlation as well as the presence/absence of cell clonality. However, diagnosis is not easy and there could be several years of delay since the beginning of the symptoms are identified. This often occurs because the disease can clinically and histologically simulate other inflammatory processes and its clinical pathological presence embodies a wide range of manifestations.(3-5) It can appear as plaques, disseminated lesions, erythroderma, tumors, follicular mucinosis, poikiloderma, and much more.(6) In addition to the variety of clinical and histological presentations, the prognosis of these lymphomas depends, among other factors, on the age of presentation, extracutaneous involvement or the presence of leukemic expression.(7-12) At first the patient presents with patches or plaques and this form is considered a nearly mycosis fungoides. Consideration of advanced mycosis fungoides is reached when the patient presents any of the following: tumors, erythroderma, lymph node involvement, blood involvement or metastasis.(7)...
Mycosis fungoides is the most frequent T cell cutaneous lymphoma.(1) Histologically it is characterised by the epidermotropic infiltration of tumor T cells and, in the majority of the cases by lymphocytes T helper CD3+ CD4+.(2) Diagnosis is made by clinical and histological correlation as well as the presence/absence of cell clonality. However, diagnosis is not easy and there could be several years of delay since the beginning of the symptoms are identified. This often occurs because the disease can clinically and histologically simulate other inflammatory processes and its clinical pathological presence embodies a wide range of manifestations.(3-5) It can appear as plaques, disseminated lesions, erythroderma, tumors, follicular mucinosis, poikiloderma, and much more.(6) In addition to the variety of clinical and histological presentations, the prognosis of these lymphomas depends, among other factors, on the age of presentation, extracutaneous involvement or the presence of leukemic expression.(7-12) At first the patient presents with patches or plaques and this form is considered a nearly mycosis fungoides. Consideration of advanced mycosis fungoides is reached when the patient presents any of the following: tumors, erythroderma, lymph node involvement, blood involvement or metastasis.(7)...
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Tesis inédita de la Universidad Complutense de Madrid, Facultad de Medicina, leída el 23-05-2023