AJR. American journal of roentgenology, Jan 9, 2016
The purpose of this study was to determine prospectively whether bowel wall apparent diffusion co... more The purpose of this study was to determine prospectively whether bowel wall apparent diffusion coefficient (ADC) measurements can be used to monitor treatment response to infliximab therapy in the setting of pediatric small-bowel Crohn disease. Twenty-eight pediatric subjects with newly diagnosed biopsy-proven Crohn disease of the distal or terminal ileum treated with infliximab were enrolled. Subjects underwent MR enterography at baseline, 1 month after therapy, and 6 months after therapy. Imaging features were documented, including bowel wall ADC and arterial or enteric phase contrast-enhanced signal intensity normalized to that of unenhanced imaging. A linear mixed model assessed the relationship between ADC and time; patient age and sex and azathioprine combination therapy were covariates. The diagnostic performance (with 95% CIs) of an increase in bowel wall ADC of 20% or more for identifying response to infliximab was calculated using a decrease in normalized contrast-enhanced...
Revista De Gastroenterologia De Mexico, Apr 1, 2011
Page 1. Revista de Gastroenterología de México 2011;2(76):126-132 www.elsevier.es ■ Guías de diag... more Page 1. Revista de Gastroenterología de México 2011;2(76):126-132 www.elsevier.es ■ Guías de diagnóstico y tratamiento en gastroenterología Guías de diagnóstico y tratamiento del estreñimiento en México. A) Epidemiología (meta-análisis de la prevalencia), ...
REPORT OF A CASE An 87-year-old white woman who was diagnosed in 1980 with malignant melanoma (MM... more REPORT OF A CASE An 87-year-old white woman who was diagnosed in 1980 with malignant melanoma (MM) on the plantar aspect of her right foot (invasion, Clark level II; thickness, 0.7 mm) was referred to the dermatology clinic at the University of Texas Medical Branch, ...
We describe 5 new cases of striated muscle hamartoma (SMH) and review the 7 cases previously desc... more We describe 5 new cases of striated muscle hamartoma (SMH) and review the 7 cases previously described in the literature. Eleven of the 12 patients had single lesions centrally located on the chin (4), near the ala of the nose (3), on the upper chest (3), and on the upper lip (1). Histologically all of the lesions were characterized by a central core containing bundles and individual fibers of skeletal muscle as well as other mesenchymal elements. The muscle fibers penetrated the dermis among numerous folliculo-sebaceous structures. Of the 12 cases of SMH, 3 had other associated congenital anomalies including a cleft lip in 1 patient and a thyroglossal duct sinus in another with single lesions, and preauricular sinuses, low-set ears and bilateral sclerocorneas in the case of multiple SMH. The relationship of SMH with oculocerebrocutaneous syndrome is discussed, and we conclude that at least some of the skin appendages associated with that syndrome are SMH.
... Fotocópia. Id: 326968. Autor: Carmona Sánchez, Ramón; Valerio Ureña, Joaquín; Valdovinos Díaz... more ... Fotocópia. Id: 326968. Autor: Carmona Sánchez, Ramón; Valerio Ureña, Joaquín; Valdovinos Díaz, Miguel Angel. Título: Utilidad de la lidocaína en gel en la manometría esofágica / The usefulness of lidocaine in gel in esophageal manometry. Fonte: Rev. gastroenterol. ...
Excessive splenic mobility (i.e. wandering spleen) is a rare condition caused by laxity or defici... more Excessive splenic mobility (i.e. wandering spleen) is a rare condition caused by laxity or deficiency of all the spleen's normal ligamentous attachments in the left hypochondrium. In the pediatric population, a wandering spleen may present as an incidental finding, an abdominal mass or torsion of the vascular pedicle causing venous congestion and acute abdominal pain, and eventually infarction. We present an unusual case of wandering spleen causing pancreatitis and gastric outlet obstruction via direct external compression.
There is a paucity of published literature describing ultrasound (US)-US and US-MR enterography (... more There is a paucity of published literature describing ultrasound (US)-US and US-MR enterography (MRE) inter-radiologist agreement in pediatric small bowel Crohn disease. To prospectively assess US-US and US-MRE inter-radiologist agreement in pediatric small bowel Crohn disease. Institutional Review Board approval and informed consent/assent were obtained for this HIPAA-compliant prospective cohort study of children with newly diagnosed distal small bowel Crohn disease (July 2012 to December 2014). Enrolled subjects (n = 29) underwent two small bowel US examinations performed by blinded independent radiologists both before and at multiple time points after initiation of medical therapy (231 unique US examinations, in total); 134 US examinations were associated with concurrent MRE. The MRE examination was interpreted by a third blinded radiologist. The following was documented on each examination: involved length of ileum (cm); maximum bowel wall thickness (mm); amount of bowel wall a...
Page 1. The Electron Microscopic Features of Sinus Histiocytosis with Massive Lymphadenopathy: A ... more Page 1. The Electron Microscopic Features of Sinus Histiocytosis with Massive Lymphadenopathy: A Study of 11 Cases Ramon Sanchez, MD, Richard K. Sibley, MD, and Juan Rosai, MD Department of Laboratory Medicine ...
AJR. American journal of roentgenology, Jan 9, 2016
The purpose of this study was to determine prospectively whether bowel wall apparent diffusion co... more The purpose of this study was to determine prospectively whether bowel wall apparent diffusion coefficient (ADC) measurements can be used to monitor treatment response to infliximab therapy in the setting of pediatric small-bowel Crohn disease. Twenty-eight pediatric subjects with newly diagnosed biopsy-proven Crohn disease of the distal or terminal ileum treated with infliximab were enrolled. Subjects underwent MR enterography at baseline, 1 month after therapy, and 6 months after therapy. Imaging features were documented, including bowel wall ADC and arterial or enteric phase contrast-enhanced signal intensity normalized to that of unenhanced imaging. A linear mixed model assessed the relationship between ADC and time; patient age and sex and azathioprine combination therapy were covariates. The diagnostic performance (with 95% CIs) of an increase in bowel wall ADC of 20% or more for identifying response to infliximab was calculated using a decrease in normalized contrast-enhanced...
Revista De Gastroenterologia De Mexico, Apr 1, 2011
Page 1. Revista de Gastroenterología de México 2011;2(76):126-132 www.elsevier.es ■ Guías de diag... more Page 1. Revista de Gastroenterología de México 2011;2(76):126-132 www.elsevier.es ■ Guías de diagnóstico y tratamiento en gastroenterología Guías de diagnóstico y tratamiento del estreñimiento en México. A) Epidemiología (meta-análisis de la prevalencia), ...
REPORT OF A CASE An 87-year-old white woman who was diagnosed in 1980 with malignant melanoma (MM... more REPORT OF A CASE An 87-year-old white woman who was diagnosed in 1980 with malignant melanoma (MM) on the plantar aspect of her right foot (invasion, Clark level II; thickness, 0.7 mm) was referred to the dermatology clinic at the University of Texas Medical Branch, ...
We describe 5 new cases of striated muscle hamartoma (SMH) and review the 7 cases previously desc... more We describe 5 new cases of striated muscle hamartoma (SMH) and review the 7 cases previously described in the literature. Eleven of the 12 patients had single lesions centrally located on the chin (4), near the ala of the nose (3), on the upper chest (3), and on the upper lip (1). Histologically all of the lesions were characterized by a central core containing bundles and individual fibers of skeletal muscle as well as other mesenchymal elements. The muscle fibers penetrated the dermis among numerous folliculo-sebaceous structures. Of the 12 cases of SMH, 3 had other associated congenital anomalies including a cleft lip in 1 patient and a thyroglossal duct sinus in another with single lesions, and preauricular sinuses, low-set ears and bilateral sclerocorneas in the case of multiple SMH. The relationship of SMH with oculocerebrocutaneous syndrome is discussed, and we conclude that at least some of the skin appendages associated with that syndrome are SMH.
... Fotocópia. Id: 326968. Autor: Carmona Sánchez, Ramón; Valerio Ureña, Joaquín; Valdovinos Díaz... more ... Fotocópia. Id: 326968. Autor: Carmona Sánchez, Ramón; Valerio Ureña, Joaquín; Valdovinos Díaz, Miguel Angel. Título: Utilidad de la lidocaína en gel en la manometría esofágica / The usefulness of lidocaine in gel in esophageal manometry. Fonte: Rev. gastroenterol. ...
Excessive splenic mobility (i.e. wandering spleen) is a rare condition caused by laxity or defici... more Excessive splenic mobility (i.e. wandering spleen) is a rare condition caused by laxity or deficiency of all the spleen's normal ligamentous attachments in the left hypochondrium. In the pediatric population, a wandering spleen may present as an incidental finding, an abdominal mass or torsion of the vascular pedicle causing venous congestion and acute abdominal pain, and eventually infarction. We present an unusual case of wandering spleen causing pancreatitis and gastric outlet obstruction via direct external compression.
There is a paucity of published literature describing ultrasound (US)-US and US-MR enterography (... more There is a paucity of published literature describing ultrasound (US)-US and US-MR enterography (MRE) inter-radiologist agreement in pediatric small bowel Crohn disease. To prospectively assess US-US and US-MRE inter-radiologist agreement in pediatric small bowel Crohn disease. Institutional Review Board approval and informed consent/assent were obtained for this HIPAA-compliant prospective cohort study of children with newly diagnosed distal small bowel Crohn disease (July 2012 to December 2014). Enrolled subjects (n = 29) underwent two small bowel US examinations performed by blinded independent radiologists both before and at multiple time points after initiation of medical therapy (231 unique US examinations, in total); 134 US examinations were associated with concurrent MRE. The MRE examination was interpreted by a third blinded radiologist. The following was documented on each examination: involved length of ileum (cm); maximum bowel wall thickness (mm); amount of bowel wall a...
Page 1. The Electron Microscopic Features of Sinus Histiocytosis with Massive Lymphadenopathy: A ... more Page 1. The Electron Microscopic Features of Sinus Histiocytosis with Massive Lymphadenopathy: A Study of 11 Cases Ramon Sanchez, MD, Richard K. Sibley, MD, and Juan Rosai, MD Department of Laboratory Medicine ...
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