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1.
J Biomed Opt ; 25(11)2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-33247560

RESUMEN

SIGNIFICANCE: Melanoma is a deadly cancer that physicians struggle to diagnose early because they lack the knowledge to differentiate benign from malignant lesions. Deep machine learning approaches to image analysis offer promise but lack the transparency to be widely adopted as stand-alone diagnostics. AIM: We aimed to create a transparent machine learning technology (i.e., not deep learning) to discriminate melanomas from nevi in dermoscopy images and an interface for sensory cue integration. APPROACH: Imaging biomarker cues (IBCs) fed ensemble machine learning classifier (Eclass) training while raw images fed deep learning classifier training. We compared the areas under the diagnostic receiver operator curves. RESULTS: Our interpretable machine learning algorithm outperformed the leading deep-learning approach 75% of the time. The user interface displayed only the diagnostic imaging biomarkers as IBCs. CONCLUSIONS: From a translational perspective, Eclass is better than convolutional machine learning diagnosis in that physicians can embrace it faster than black box outputs. Imaging biomarkers cues may be used during sensory cue integration in clinical screening. Our method may be applied to other image-based diagnostic analyses, including pathology and radiology.


Asunto(s)
Aprendizaje Profundo , Melanoma , Neoplasias Cutáneas , Algoritmos , Biomarcadores , Señales (Psicología) , Dermoscopía , Humanos , Aprendizaje Automático , Melanoma/diagnóstico por imagen , Neoplasias Cutáneas/diagnóstico por imagen
3.
Med. clín (Ed. impr.) ; 138(11): 475-477, abr. 2012.
Artículo en Español | IBECS | ID: ibc-100052

RESUMEN

Fundamento y objetivo: Nuestro objetivo fue determinar la proporción de pacientes con diabetes mellitus tipo 2(DM2) con hipotiroidismo primario (HP) y compararlos con un grupo sin diabetes. Pacientes y métodos: Se revisó una base electrónica que incluyó 5.161 pacientes. Se identificaron los pacientes con DM2 tratados con levotiroxina. Se comparó con la prevalencia de HP en aquellos pacientes sin DM2. Se excluyeron enfermos con neoplasia o cirugía de tiroides, panhipopituitarismo o complicaciones quirúrgicas de bocio multinodular o nódulo tiroideo.Resultados: Se incluyeron 1.848 pacientes adultos con DM2 en el grupo de estudio, 58% mujeres y 42% hombres. Para el grupo control se revisaron 3.313 individuos, 55% mujeres y 45% hombres. La edad media del grupo de estudio fue de 52±7 años, y 47±4 años en el grupo control (p<0,001). La tasa de hipotiroidismo en el grupo de estudio fue de 5,7% (n=105) y en el grupo control 1,8% (n=60) (odds ratio 3,45; intervalo de confianza del 95% 2,51-4,79) (p<0,001).Conclusión: Existe una asociación significativa entre HP y DM2. Recomendamos el perfil tiroideo en todos los pacientes con DM2, similar a lo sugerido en la diabetes mellitus tipo 1 (AU)


Background and objective: The aim of our study was to identify the rate of diabetic patients treated for hypothyroidism and compare them with a group without type 2 diabetes mellitus (T2DM). Patients and methods: We reviewed the computerized clinical records of 5161 patients. We identified diabetic patients treated with l -thyroxine. We compared the prevalence of PH with those patients under treatment with levothyroxine without T2DM. We excluded patients with a thyroid neoplasia, thyroid surgery, panhypopituitarism, or surgical complications of multinodular goiter or a thyroid nodule. Subclinical hypothyroidism was not considered.Results: We included 1848 adult patients with T2DM in the study group, 58% women and 42% men. For the control group, we included 3313 non-diabetic patients, 55% women and 45% men. The mean age in the study group was 52±7 years, and 47±4 years in the control group (p<.001). The rate of hypothyroidism in the study group was 5.7%, and in the control group 1.8% (odds ratio of 3.45; 95% confidence interval 2.51-4.79) (p<.001). Conclusion: A strong association between T2DM and hypothyroidism was found. We recommend a thyroid profile in all patients with T2DM, similar to the recommendation in type 1 diabetes mellitus (AU)


Asunto(s)
Humanos , Hipotiroidismo/epidemiología , Diabetes Mellitus Tipo 2/epidemiología , Factores de Riesgo , Enfermedades Cardiovasculares/epidemiología , Pruebas de Función de la Tiroides
4.
Med Clin (Barc) ; 138(11): 475-7, 2012 Apr 28.
Artículo en Inglés | MEDLINE | ID: mdl-22204860

RESUMEN

BACKGROUND AND OBJECTIVE: The aim of our study was to identify the rate of diabetic patients treated for hypothyroidism and compare them with a group without type 2 diabetes mellitus (T2DM). PATIENTS AND METHODS: We reviewed the computerized clinical records of 5161 patients. We identified diabetic patients treated with l-thyroxine. We compared the prevalence of PH with those patients under treatment with levothyroxine without T2DM. We excluded patients with a thyroid neoplasia, thyroid surgery, panhypopituitarism, or surgical complications of multinodular goiter or a thyroid nodule. Subclinical hypothyroidism was not considered. RESULTS: We included 1848 adult patients with T2DM in the study group, 58% women and 42% men. For the control group, we included 3313 non-diabetic patients, 55% women and 45% men. The mean age in the study group was 52±7 years, and 47±4 years in the control group (p<.001). The rate of hypothyroidism in the study group was 5.7%, and in the control group 1.8% (odds ratio of 3.45; 95% confidence interval 2.51-4.79) (p<.001). CONCLUSION: A strong association between T2DM and hypothyroidism was found. We recommend a thyroid profile in all patients with T2DM, similar to the recommendation in type 1 diabetes mellitus.


Asunto(s)
Diabetes Mellitus Tipo 2/complicaciones , Hipotiroidismo/complicaciones , Adulto , Estudios de Casos y Controles , Estudios Transversales , Femenino , Humanos , Hipotiroidismo/tratamiento farmacológico , Hipotiroidismo/epidemiología , Masculino , Persona de Mediana Edad , Prevalencia , Estudios Retrospectivos , Tiroxina/uso terapéutico
5.
J Med Case Rep ; 5: 200, 2011 May 21.
Artículo en Inglés | MEDLINE | ID: mdl-21600024

RESUMEN

INTRODUCTION: In the patient with acromegaly, pituitary surgery is the therapeutic standard. Despite undergoing surgery, a significant number of patients with acromegaly continue to have uncontrolled growth hormone secretion. These patients require other treatments such as external irradiation and/or drug therapy. CASE PRESENTATION: We present the clinical and laboratory responses to six months of treatment with rosiglitazone in four cases. In all four cases, the patients had persistent growth hormone overproduction despite previous surgical treatment and other conventional therapy. Case 1 is a 57-year-old Caucasian woman, case 2 is a 51-year-old Hispanic man, case 3 is a 32-year-old Hispanic woman, and case 4 is a 36-year-old Hispanic man. In three of these patients, basal and nadir growth hormone and insulin-like growth factor 1 levels were significantly decreased (P < 0.05 and P < 0.01, respectively). CONCLUSION: Rosiglitazone could be a treatment option in select patients with acromegaly.

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