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1.
Radiol Med ; 118(1): 23-39, 2013 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-22744345

RESUMEN

PURPOSE: This study prospectively compared the diagnostic capabilities of magnetic resonance (MR) imaging with conventional defecography (CD) in outlet obstruction syndrome. MATERIALS AND METHODS: Nineteen consecutive patients with clinical symptoms of outlet obstruction underwent pelvic MR examination. The MR imaging protocol included static T2-weighted fast spin-echo (FSE) images in the sagittal, axial and coronal planes; dynamic midsagittal T2-weighted single-shot (SS)-FSE and fast imaging employing steady-state acquisition (FIESTA) cine images during contraction, rest, straining and defecation. MR images (including and then excluding the evacuation phase) were compared with CD, which is considered the reference standard. RESULTS: Comparison between CD and MR with evacuation phase (MRWEP) showed no significant differences in sphincter hypotonia, dyssynergia, rectocele or rectal prolapse and significant differences in descending perineum. Comparison between CD and MR without evacuation phase (MRWOEP) showed no significant differences in sphincter hypotonia, dyssynergia or enterocele but significant differences in rectocele, rectal prolapse and descending perineum. Comparison between MRWEP and MRWOEP showed no significant differences in sphincter hypotonia, dyssynergia, enterocele or descending perineum but significant differences in rectocele, rectal prolapse, peritoneocele, cervical cystoptosis and hysteroptosis. CONCLUSIONS: MR imaging provides morphological and functional study of pelvic floor structures and may offer an imaging tool complementary to CD in multicompartment evaluation of the pelvis. An evacuation phase is mandatory.


Asunto(s)
Estreñimiento/etiología , Estreñimiento/fisiopatología , Defecografía/métodos , Imagen por Resonancia Magnética/métodos , Diafragma Pélvico/fisiopatología , Adulto , Anciano , Análisis de Varianza , Estreñimiento/diagnóstico por imagen , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Interpretación de Imagen Radiográfica Asistida por Computador , Síndrome
2.
Radiol Med ; 118(4): 523-33, 2013 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-23358816

RESUMEN

PURPOSE: This study compared spontaneous bone healing and regeneration obtained with deproteinised bovine graft in residual cavities after mandibular cyst enucleation using computed tomography (CT) Dentascan. MATERIALS AND METHODS: Eighty patients with a radiological diagnosis of mandibular cyst underwent surgical enucleation. Patients were divided into a control group (spontaneous healing, 40 patients) and a test group (deproteinised bovine graft, 40 patients). All patients underwent follow-up CT Dentascan 12 months after the procedure. For each residual cavity, apical-coronal and mesial-distal distance, average pixel intensity and volume were calculated and results compared between two groups using the t test. RESULTS: The control group showed mean volume, apical-coronal and mesial-distal distance of 703.2 ± 185.3 mm(3), 28.6 ± 9.4 mm and 25 ± 2.84 mm, respectively. In the test group, values were 738.2 ± 189.2 mm(3), 27.5 ± 3.6 mm and 25.3 ± 2.97 mm, respectively. There was no statistically significant difference between groups. Average pixel intensity was 1,102.8 ± 124.3 in the test group and 624.9 ± 133.3 in the control group, with a significant difference between groups (p<0.0001). CONCLUSIONS: The significantly higher average pixel intensity observed in the test group demonstrates the cavalue of treatment with biomaterials to obtain earlier bone regeneration.


Asunto(s)
Quistes Óseos/diagnóstico por imagen , Quistes Óseos/cirugía , Regeneración Ósea , Sustitutos de Huesos , Enfermedades Mandibulares/diagnóstico por imagen , Enfermedades Mandibulares/cirugía , Tomografía Computarizada Multidetector , Adulto , Animales , Estudios de Casos y Controles , Bovinos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Interpretación de Imagen Radiográfica Asistida por Computador , Resultado del Tratamiento , Cicatrización de Heridas
3.
Radiol Med ; 118(3): 487-503, 2013 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22872453

RESUMEN

PURPOSE: This study was undertaken to prospectively determine the diagnostic capabilities of magnetic resonance (MR) imaging in detecting myometrial and cervical invasion and lymph node involvement in endometrial carcinoma and to identify the causes of errors in staging endometrial carcinoma. MATERIALS AND METHODS: Twenty consecutive patients with a histological diagnosis of endometrial carcinoma underwent preoperative MR imaging. MR findings were compared with surgical staging, considered as the standard of reference. RESULTS: In assessing myometrial invasion, MR imaging showed 70% accuracy, 80% sensitivity, 40% specificity, 80% positive predictive value (PPV), and 40% negative predictive value (NPV). In detecting cervical invasion, MR imaging had 95% accuracy, 100% sensitivity, 94.4% specificity, 66.7% PPV, and 100% NPV. In evaluating lymph node involvement, MR imaging showed 100% accuracy, sensitivity, specificity, PPV and NPV. Errors in evaluating myometrial invasion were caused by polypoid tumour, adenomyosis and leiomyomas, whereas those in evaluating cervical invasion were caused by dilatation and curettage. CONCLUSIONS: MR imaging is a reliable technique for preoperative evaluation of endometrial carcinoma. Its main limitation is differentiating between stage IA and IB carcinomas, which is not highly important for surgical planning. Cooperation between the gynaecologist and radiologist is mandatory to avoid staging errors.


Asunto(s)
Neoplasias Endometriales/patología , Imagen por Resonancia Magnética/métodos , Adulto , Anciano , Anciano de 80 o más Años , Errores Diagnósticos , Neoplasias Endometriales/cirugía , Femenino , Humanos , Metástasis Linfática , Persona de Mediana Edad , Invasividad Neoplásica , Estadificación de Neoplasias , Valor Predictivo de las Pruebas , Estudios Prospectivos , Sensibilidad y Especificidad
4.
Eur Rev Med Pharmacol Sci ; 26(13): 4863-4871, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-35856378

RESUMEN

OBJECTIVE: Human brucellosis is a zoonosis with an extremely wide spectrum of clinical manifestations. Focal splenic involvement is very uncommon, particularly in the pediatric age group, during the illness' acute phase. CASE REPORT: A 4-year-old boy, already receiving third-generation cephalosporin treatment, was transferred from a local hospital to the University Pediatric Department for fever, anemia, increased inflammation index, and multiple, hyper-echogenic splenic lesions on abdominal ultrasound. Initial diagnostic laboratory investigations for Brucella infection, including the Widal-Wright test, were found to be negative. However, further diagnostic laboratory analysis using the chemiluminescent immunoassay was positive for Brucella IgM antibodies. Treatment with rifampicin at a dose of 150 mg/Kg/twice daily and co-trimethoprim at a dose of 80 mg/Kg/twice daily was started and continued for 7 weeks. IgM antibodies were undetectable after 2 weeks of treatment, and after 6 weeks of treatment, abdominal ultrasound documented a reduction of the diameter of the major splenic infiltrate from 1 to 0.5 cm. At 3 and 5 months of follow-up, re-evaluation of the abdominal lesions displayed complete resolution of the splenic lesions and a complete clinical recovery. CONCLUSIONS: The present case and a literature review are presented in this study since a standard diagnostic laboratory evaluation for brucellosis may miss the diagnosis, and in suspected cases, the laboratory analysis should be extended. Splenic abscesses are known to be rare in brucellosis, but the diagnosis should be considered in children with severe focal lesions, as specific antibiotic treatment may result in complete clinical recovery.


Asunto(s)
Brucelosis , Enfermedades del Bazo , Absceso , Antibacterianos/uso terapéutico , Brucelosis/diagnóstico , Brucelosis/tratamiento farmacológico , Brucelosis/patología , Niño , Preescolar , Humanos , Inmunoglobulina M , Masculino , Enfermedades del Bazo/diagnóstico por imagen , Enfermedades del Bazo/tratamiento farmacológico
5.
Radiol Med ; 115(3): 467-82, 2010 Apr.
Artículo en Inglés, Italiano | MEDLINE | ID: mdl-20077045

RESUMEN

PURPOSE: The authors compared biliary and pancreatic imaging obtained through 2D single-shot fast spin-echo (SSFSE), breath-hold 3D fast recovery fast spin-echo (FRFSE) and respiratory-triggered 3D FRFSE sequences. MATERIALS AND METHODS: A total of 106 magnetic resonance cholangiopancreatography (MRCP) examinations performed between December 2007 and September 2008 were evaluated with a comparison of 2D SSFSE (thin section and thick slab), breath-hold 3D FRFSE and respiratory-triggered 3D FRFSE sequences. The biliary tract was divided into seven segments: right hepatic duct, left hepatic duct, common hepatic duct, cystic duct, common bile duct, cystic duct junction and biliary-pancreatic confluence. The main pancreatic duct was divided into three segments (head, body and tail). Visualisation of biliary variants was also compared. Two blinded radiologists evaluated segment visibility using a quantitative scale. The Student's t test for paired samples was used for statistical analysis. RESULTS: Compared with 2D SSFSE, respiratory-triggered 3D FRFSE sequences showed better visibility of the right hepatic duct (p=0.0277), the cystic duct (p=0.0081), the cystic duct junction (p=0.0010), the biliary-pancreatic confluence (p=0.0334) and biliary variants (p=0.0198). In the comparison between breath-hold 3D FRFSE and 2D SSFSE, a significant statistical difference was found in visualisation of the cystic duct (p=0.027), the cystic duct junction (p=0.020), the biliary-pancreatic confluence (p=0.0338) and biliary variants (p=0.0311). CONCLUSIONS: Three-dimensional FRFSE offers a significant benefit over conventional 2D imaging.


Asunto(s)
Enfermedades de las Vías Biliares/diagnóstico , Pancreatocolangiografía por Resonancia Magnética/métodos , Enfermedades Pancreáticas/diagnóstico , Sistema Biliar/anatomía & histología , Humanos , Imagenología Tridimensional , Páncreas/anatomía & histología , Técnicas de Imagen Sincronizada Respiratorias/métodos
6.
Radiol Med ; 115(5): 732-46, 2010 Aug.
Artículo en Inglés, Italiano | MEDLINE | ID: mdl-20177983

RESUMEN

PURPOSE: This study compared the diagnostic accuracy of magnetic resonance cholangiopancreatography (MRCP) and endoscopic ultrasonography (EUS) in evaluating the cause of extrahepatic bile duct dilatation. MATERIALS AND METHODS: Forty-five patients (26 men, mean age 57 years) with extrahepatic biliary dilatation, as shown by transabdominal ultrasound, with or without elevated biliary and pancreatic serum indices, were prospectively studied with MRCP and EUS between September 2007 and October 2008. EUS and MRCP were performed within no more than 24 h of each other to reduce the possibility of changes due to stone migration. Image analysis was carried out in a double-blind fashion. RESULTS: MRCP had 88.9% diagnostic accuracy, 91.9% sensitivity and 75% specificity, with 94.4% positive predictive value and 66.7% negative predictive value. EUS had 93.3% diagnostic accuracy, 97.3% sensitivity and 75% specificity; the positive and negative predictive values were 94.7% and 85.7%, respectively. CONCLUSIONS: MRCP and EUS do not show significant statistical differences in diagnostic accuracy. MRCP is an accurate, noninvasive modality in the study of extrahepatic biliary pathology. EUS is especially reliable in patients with extrahepatic biliary obstruction caused by endoluminal sludge.


Asunto(s)
Pancreatocolangiografía por Resonancia Magnética/métodos , Colestasis Extrahepática/diagnóstico , Endosonografía/métodos , Conductos Biliares Extrahepáticos , Colestasis Extrahepática/diagnóstico por imagen , Medios de Contraste , Dilatación Patológica , Femenino , Humanos , Interpretación de Imagen Asistida por Computador , Masculino , Meglumina/análogos & derivados , Persona de Mediana Edad , Compuestos Organometálicos , Valor Predictivo de las Pruebas , Estudios Prospectivos , Sensibilidad y Especificidad
7.
Pathologica ; 109(4): 418-420, 2017 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-29449738

RESUMEN

Sarcoidosis is a multisystemic granulomatous disease characterized by the presence of noncaseating granulomas, the exact etiology of which is yet to be determined. Most of patients show granulomas located in the lungs or in the related lymph nodes. However, lesions can affect any organ. Noncaseating granulomas are not a pathognomonic sign of sarcoidosis, being observed also in other diseases, therefore the diagnosis is often of exclusion. We report a case of sarcoidosis with parotid gland involvement in the context of a Heerfordt syndrome, discussing about its clinical presentation, pathogenesis, pathology and differential diagnosis with other granulomatous diseases.


Asunto(s)
Granuloma/patología , Glándula Parótida/diagnóstico por imagen , Sarcoidosis/diagnóstico por imagen , Fiebre Uveoparotidea/diagnóstico por imagen , Diagnóstico Diferencial , Femenino , Humanos , Persona de Mediana Edad , Glándula Parótida/patología , Sarcoidosis/patología , Fiebre Uveoparotidea/patología
8.
Acta Otorhinolaryngol Ital ; 37(4): 341-345, 2017 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-28530265

RESUMEN

Papillary squamous neoplasms of the upper respiratory tract are rare variants of squamous cell carcinomas. They are characterised by an exophytic, papillary growth and generally have favourable prognosis. The tumour has been described in the upper aerodigestive tract. In this context, most common sites of involvement are the larynx and hypopharynx, and rarely the oral cavity and oropharynx. The limited studies and small number of published cases of papillary squamous cell carcinoma of the palatine tonsil led us to make a complete analysis of this tumour by analysing the clinical, histological, radiological, virological and therapeutic aspects that are not always present in the literature. A case of papillary squamous cell carcinoma of the palatine tonsil is reported. The lesion (T2N0M0) was located into the left palatine tonsil that hung towards the oral cavity. Both HPV 16 DNA and E6/E7 mRNA were detected in the lesion. The clinicopathological profile of the neoplasm is presented and a comprehensive review of recent literature was made by analysing all aspects of interest of this neoplasm.


Asunto(s)
Carcinoma de Células Escamosas , Neoplasias de Cabeza y Cuello , Tonsila Palatina , Neoplasias Faríngeas , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/cirugía , Neoplasias de Cabeza y Cuello/diagnóstico , Neoplasias de Cabeza y Cuello/cirugía , Humanos , Masculino , Persona de Mediana Edad , Neoplasias Faríngeas/diagnóstico , Neoplasias Faríngeas/cirugía
9.
Clin Ter ; 168(3): e194-e198, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28612896

RESUMEN

BACKGROUND: Redo surgery for recurrent goiter is still now, even in experienced hands, followed by higher morbidity than primary total thyroidectomy. Suppressive Levothyroxine therapy failed to improve the recurrence rate, while inducing a subclinical hyperthyroidism. Aim of this study is to verify morbidity after total thyroidectomy for benign thyroid diseases, both primary and after recurrence. MATERIALS AND METHODS: A series of 20 cases of total thyroidectomy for recurrent benign diseases (RG), performed between January 2001 and December 2013 was compared with 225 cases of primary total thyroidectomy (PT) . Cancers, even incidentally diagnosed, were excluded. At least a 12 months follow up was accomplished. Due to the small size of the sample for RG, statistical analysis was performed by Fisher test only. RESULTS: Postoperative complications were Transient hypocalcemia: 5 (25%) in RG and 18 (8%) in PT, Permanent hypocalcemia only 2 (10%) in RG (significant for p <0,05), Transient RLN deficit 5 (25 %) in RG and 6 (2.6%) in PT (significant for p< 0.05). CONCLUSIONS: Differences in incidence of perioperative complications cannot be advocated to justify a less than total thyroidectomy even in benign disease setting. The need for a redo surgery with its burden of morbidity is per se a good reason to avoid a conservative surgery. Further, suppressive therapy with Levothyroxine often fails to avoid recurrence, inducing in some cases a specific morbidity. Our experience confirms the results of our previous experiences and of literature on this topic: the best management of recurrent goiter is its prevention by primary total thyroidectomy.


Asunto(s)
Bocio/cirugía , Enfermedades de la Tiroides/cirugía , Tiroidectomía , Anciano , Anciano de 80 o más Años , Femenino , Bocio/epidemiología , Humanos , Hipertiroidismo/complicaciones , Incidencia , Masculino , Morbilidad , Complicaciones Posoperatorias/epidemiología , Recurrencia , Reoperación , Estudios Retrospectivos , Enfermedades de la Tiroides/complicaciones , Tiroidectomía/métodos
10.
Eur J Radiol ; 86: 119-126, 2017 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-28027737

RESUMEN

OBJECTIVES: To compare Apparent Diffusion Coefficient (ADC) measurements in rectal neoplastic lesions before and after lumen distension obtained with sonography transmission gel. METHODS: From January 2014 to July 2016, 25 patients (average age 63.7, range 41-85, 18 males) were studied for pre-treatment rectal cancer staging using a 1.5T MRI. Diffusion MRI was obtained using echo-planar imaging with b=800 value; all patients were studied acquiring diffusion sequences with and without rectal lumen distension obtained using sonography transmission gel. In both diffusion sequences, two blinded readers calculated border ADC values and small ADC values, drawing regions of interest respectively along tumour borders and far from tumour borders. Mean ADC values among readers - for each type of ADC measurement - were compared using Wilcoxon matched pairs signed rank test. Correlation was assessed using Pearson analysis. RESULTS: Border ADC mean value for diffusion MR sequences without endorectal contrast was 1.122mm2/sec, with 95% Confidence Interval (CI)=1.02-1.22; using gel lumen distension, higher border ADC mean value of 1.269mm2/s (95% CI=1.16-1.38) was obtained. Wilcoxon matched pairs signed rank test revealed statistical difference (p<0.01); a strong Pearson correlation was reported, with r value of 0.69. Small-ADC mean value was 1.038mm2/s (95% CI=0.91-1.16) for diffusion sequences acquired without endorectal distension and 1.127mm2/s (95% CI=0.98-1.27) for diffusion sequences obtained after endorectal gel lumen distension. Wilcoxon analysis did not show statistical difference (p=0.13). A very strong positive correlation was observed, with r value of 0.81. CONCLUSIONS: ADC measurements are slightly higher using endorectal sonographic transmission gel; ROI should be traced far from tumour borders, to minimize gel filled-pixel along the interface between lumen and lesion. Further studies are needed to investigate better reliability of ADC in rectal cancer MRI using sonographic gel intraluminal distension.


Asunto(s)
Neoplasias del Recto/patología , Adulto , Anciano , Anciano de 80 o más Años , Imagen de Difusión por Resonancia Magnética/métodos , Dilatación/métodos , Imagen Eco-Planar/métodos , Femenino , Geles , Humanos , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Estudios Prospectivos , Recto/patología , Reproducibilidad de los Resultados
11.
Eur Rev Med Pharmacol Sci ; 18(2 Suppl): 16-23, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-25535186

RESUMEN

OBJECTIVE: Pancreatic cystic tumors are relatively rare tumors and only 1% of them are malignant. They are often asymptomatic and detected as incidental findings through diagnostic imaging. Currently there are no universal guide lines for the correct clinical approach to pancreatic cystic lesions. Cross-sectional imaging demonstrates some typical morphological features that determine the pre-operative diagnosis of the pancreatic cystic lesions (serous or mucinous cystadenoma, intraductal papillary mucinous neoplasms). In addition, endoscopic ultrasonography permits the collection and analysis of the fluid content. The aim of this paper is to describe our case load in the management of pancreatic cystic neoplasms and propose some criteria for choosing between surgical or conservative approaches. PATIENTS AND METHODS: 12 patients with pancreatic cystic neoplasms were retrospectively evaluated. They were studied using cross-sectional imaging modalities (computed tomography and magnetic resonance); endoscopic ultrasonography was performed in 7 patients. RESULTS: In each patient a careful evaluation of several factors (age, comorbidity, imaging features, symptoms, life expectancy) conditioned our clinical decision. Among our 12 patients, surgical resection was performed in 7 cases. DISCUSSION: The treatment of pancreatic cystic lesions is still a dilemma because even in the presence of malignant potential, pancreatic surgery remains very complicated and demolitive. Many factors need to be considered in the management of cystic pancreatic tumors. The most important include histological type, location, size, age and clinical condition of the patient. CONCLUSIONS: A correct multidisciplinary pre-operative diagnosis is mandatory. Surgery should only be performed in selected cases.


Asunto(s)
Quiste Pancreático/cirugía , Neoplasias Pancreáticas/cirugía , Anciano , Anciano de 80 o más Años , Cistoadenoma Mucinoso/diagnóstico por imagen , Cistoadenoma Mucinoso/patología , Cistoadenoma Mucinoso/cirugía , Endosonografía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Quiste Pancreático/diagnóstico por imagen , Quiste Pancreático/patología , Neoplasias Pancreáticas/diagnóstico por imagen , Neoplasias Pancreáticas/patología , Estudios Retrospectivos , Tomografía Computarizada por Rayos X
12.
Eur Rev Med Pharmacol Sci ; 18(8): 1259-68, 2014.
Artículo en Inglés | MEDLINE | ID: mdl-24817303

RESUMEN

The incidence of cystic pancreatic neoplasms increased in the past decade, due to the recent advances in multidetector computed tomography and magnetic resonance imaging; several pancreatic cysts are incidentally encountered during diagnostic exams performed for non-pancreatic diseases. Indeed, cystic pancreatic tumors are currently considered relatively rare, accounting for approximately 10% of all pancreatic neoplasms. Serous cystadenoma, mucinous cystadenoma, intraductal papillary mucinous neoplasms and solid-pseudopapillary tumor represent about 90% of all pancreatic primary cystic tumours. The non-optimal diagnostic preoperative accuracy in distinguishing benign from malignant cystic lesions ensures that up till now there are no well-defined guidelines regarding the management of cystic pancreatic neoplasms. Imaging findings often do not allow the diagnosis, because there is a considerable overlap among the cystic lesions; the best pre-operative characterization is obtained by the association of all diagnostic procedures available. For their different histology and behavior, cystic pancreatic neoplasms need to be managed according to various factors. In this review, the main elements necessary for their management are assessed--radiological features, tumour dimensions, patients' characteristics, the mode of clinical presentation and the associated oncologic markers. A multidisciplinary approach--including gastroenterologists, radiologists and surgeons--should be adopted in order to perform a differential diagnosis and a correct management.


Asunto(s)
Neoplasias Pancreáticas/cirugía , Femenino , Humanos , Masculino
13.
Clin Ter ; 163(5): e331-5, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-23099983

RESUMEN

Among adrenal masses only 0.06% to 0.18% are cysts and among them, pseudocysts are the second (39%) most common lesions. Due to the increased use of imaging studies their incidence seems to have increased. Most of these lesions are incidentally found during radiologic investigation or at the time of autopsy, and only rarely they are detected in pregnant women. The latter scenario warrants emergency surgery, due to the risk of rupture. We present a case of a 39-years old woman presenting with unrelenting left flank pain due to a large adrenal pseudocyst soon after her first delivery. Four months after, she presented to our surgical division for persistent pain and anemia so underwent an extensive work up that showed a large pseudocystic mass (8 x 8 cm ) of the left adrenal gland. Once the neoplastic and parasitic etiology of the lesion were excluded, she underwent uneventful laparoscopic adrenalectomy. She was discharged home three days postoperatively. This case is the 13th case in the English literature and at the same time is the first case of adrenal pseudocyst occurred four months after delivery.


Asunto(s)
Enfermedades de las Glándulas Suprarrenales/diagnóstico , Quistes/diagnóstico , Dolor Abdominal/etiología , Enfermedades de las Glándulas Suprarrenales/complicaciones , Adulto , Quistes/complicaciones , Femenino , Humanos , Periodo Posparto
14.
Transplant Proc ; 44(7): 1884-8, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22974862

RESUMEN

BACKGROUND: We compared values of apparent diffusion coefficient (ADC) with renal function indices among a population of kidney transplant recipients who underwent magnetic resonance with diffusion-weighted imaging (DWI) of their grafts. MATERIALS AND METHODS: Thirty-five patients with right iliac transplanted kidneys were studied using 1.5-T magnetic resonance. Diffusion echo-planar sequences with several b-values were acquired to investigate transplanted grafts. Patients were divided into 3 groups according to their creatinine clearances; Group A, clearance >60 mL/min; Group B, clearance >30 and ≤60 mL/min; and Group C, clearance ≤30 mL/min. ADC values between groups were compared using Mann-Whitney U test. Receiver operating characteristic (ROC) curves were used to predict the normal function (Group A) versus renal failure cohorts (Group C). RESULTS: Comparing mean values of ADC between Group A and Group C patients, we observed a significant difference (P = .0003) with higher ADC values among patients with a normal creatinine clearance (>60 mL/min). Comparing Groups B and C did not show a significant difference (P = .05); nor did Group A and Group B reveal a significant difference (P = .38). To predict normal clearance values, the Group A ROC curve showed an area under curve (AUC) of 0.780 with a sensitivity of 92.3% and a specificity of 68.2% at a threshold ADC value of ≥2.08 × 10(-3) mm(2)/sec. In the prediction of low clearance values, the Group C ROC curve showed an AUC of 0.846 with a sensitivity of 83.3% and a specificity of 82.6% using a threshold ADC value of ≤2.07 × 10(-3) mm(2)/sec. CONCLUSIONS: Updating our experience among 35 patients, DWI was confirmed to be a promising noninvasive tool to assess renal function; an ADC ≥2.08 × 10(-3) mm(2)/sec may be used as a threshold to predict a normal clearance. However, an overlap of ADC values between groups is a limit.


Asunto(s)
Imagen Eco-Planar , Trasplante de Riñón , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad
15.
Transplant Proc ; 43(4): 960-6, 2011 May.
Artículo en Inglés | MEDLINE | ID: mdl-21620026

RESUMEN

BACKGROUND: The aim of this study was to compare values of apparent diffusion coefficient (ADC) and diffusion (D) with renal function indexes, in a population of kidney transplant recipients who underwent magnetic resonance with diffusion-weighted imaging (DWI) of the transplanted graft. MATERIALS AND METHODS: We studied 21 patients using a 1.5-Tesla magnetic resonance; DWI sequences were acquired with several b-values. Patients were divided into 3 groups by their creatinine clearance values: group A, clearance >60 mL/min; group B, clearance >30 and ≤60 mL/min; and group C, clearance ≤30 mL/min. ADCs values between groups were compared using the Mann-Whitney U test. Receiver operating characteristic (ROC) curves were created for prediction of normal renal function (group A) and renal failure (group C). RESULTS: Comparing mean values of ADC between groups A and C, we observed a difference (P=0.0012), with higher values in group A. Regarding mean values of D, we observed a difference between groups A and C (P=0.022). In the comparison between contiguous groups, we observed no difference for ADC and D values. In the prediction of normal clearance values (group A), ROC curve showed an area under curve (AUC) of 0.861, with a sensitivity of 88.89% and specificity of 75% using a threshold ADC value ≥2.1 × 10(-3) mm(2)/sec. For prediction of normal clearance values (group A), ROC curve showed an AUC of 0.787, with a sensitivity of 77.8% and specificity of 83.3% using a threshold D value ≥2.3 × 10(-3) mm(2)/sec. CONCLUSION: Although studies with a larger number of patients are needed, DWI represents a promising tool for noninvasive assessment of renal function. An ADC ≥ 2.1 × 10(-3) mm(2)/sec and a D ≥ 2.3 × 10(-3) mm(2)/sec may be used as a threshold for predicting normal clearance.


Asunto(s)
Imagen de Difusión por Resonancia Magnética , Tasa de Filtración Glomerular , Trasplante de Riñón , Riñón/cirugía , Insuficiencia Renal/diagnóstico , Adulto , Anciano , Biomarcadores/sangre , Creatinina/sangre , Femenino , Humanos , Italia , Riñón/fisiopatología , Masculino , Persona de Mediana Edad , Proyectos Piloto , Valor Predictivo de las Pruebas , Curva ROC , Insuficiencia Renal/etiología , Insuficiencia Renal/fisiopatología , Factores de Tiempo , Resultado del Tratamiento
16.
Arch Gerontol Geriatr ; 51(1): 31-5, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-19628288

RESUMEN

The aim of this study was to evaluate the impact of radiotherapy plus concomitant and adjuvant temozolomide (TMZ), in terms of feasibility and activity, in elderly patients with glioblastoma. From January 2002 to December 2007, 42 consecutive patients with glioblastoma (27 men and 15 women) aged 65 years or more (median age 71.3 years), received radiotherapy plus concomitant and adjuvant TMZ. Nineteen patients (45.2%) had a Karnofsky index >or=80. Thirty-six patients (85.8%) underwent complete or subtotal resection, while 6 patients (14.2%) were only biopsied. All patients received adjuvant radiotherapy within 4 weeks from surgery. Twenty-two patients (54.8%) underwent adjuvant TMZ. Early discontinuation of concomitant TMZ program due to toxicity was observed in 8 patients. Considered variables were: age, Karnofsky index, surgery versus no surgery, radiation dose, and chemotherapy. At a median follow-up of 10.2 months, the 6- and 12-month overall survival rates were 81.9% and 27.8%, respectively. There was a significantly better survival for patients with a performance status according to Karnofsky >80 (p<0.0001). Actuarial progression-free survival at 6- and 12-month was 46.4% and 9.8%, respectively. Globally, the treatment was well tolerated with no treatment-related toxicity in 69% of patients. In conclusion, in elderly patients, the adjuvant chemo-radiotherapy was well tolerated with an acceptable rate of toxicity, and patients with a good performance status had a significantly better survival. However, further prospective trials are needed to confirm these results.


Asunto(s)
Antineoplásicos Alquilantes/uso terapéutico , Neoplasias Encefálicas/tratamiento farmacológico , Neoplasias Encefálicas/radioterapia , Dacarbazina/análogos & derivados , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Glioblastoma/tratamiento farmacológico , Glioblastoma/radioterapia , Anciano , Anciano de 80 o más Años , Biopsia , Neoplasias Encefálicas/cirugía , Quimioterapia Adyuvante , Terapia Combinada , Dacarbazina/uso terapéutico , Femenino , Glioblastoma/cirugía , Humanos , Imagen por Resonancia Magnética , Masculino , Procedimientos Neuroquirúrgicos/métodos , Temozolomida , Resultado del Tratamiento
17.
Arch Gerontol Geriatr ; 51(3): 277-82, 2010.
Artículo en Inglés | MEDLINE | ID: mdl-20044153

RESUMEN

The purpose of this study was to evaluate the feasibility and the activity of radiotherapy treatment in patients aged ≥75 with prostate cancer (PC). From January 2000 to December 2007, 107 consecutive patients aged ≥75 years received radiotherapy with radical intent for PC. Eighty-one patients received radiotherapy in combination with a 6 months androgen suppression therapy. Variables considered were age, stage, co-morbidities according to the adult co-morbidity evaluation index (ACE-27) and performance status (PS). The median age was 79.1 years (range 76-87). The 23.4% of patients showed no co-morbidities, while the 46.7% had mild, 23.4% moderate, and 6.5% severe co-morbidities, respectively. All patients completed the planned radiation treatment. At a median follow-up of 37.8 months, the 5-year overall survival rate was 78%. There was a better survival for patients with no or mild co-morbidities (p<0.0001) and a good PS (p=0.009). The actuarial disease-free survival at 60 months was 75.8%. Difference in acute and late toxicity rate was detected between ACE-27 classes for diarrhea and marginally for urinary toxicity, but no difference was detected for different age. We conclude that compliance with radiotherapy is good and rate of toxicity is acceptable in elderly patients. Increasing severity of co-morbidity may sufficiently shorten remaining life expectancy to cancel gains with radical radiotherapy. Further prospective trials are needed to confirm these results.


Asunto(s)
Neoplasias de la Próstata/radioterapia , Anciano , Anciano de 80 o más Años , Antagonistas de Andrógenos/uso terapéutico , Comorbilidad , Estudios de Factibilidad , Humanos , Masculino , Estadificación de Neoplasias , Modelos de Riesgos Proporcionales , Neoplasias de la Próstata/tratamiento farmacológico , Neoplasias de la Próstata/patología , Estudios Retrospectivos , Tasa de Supervivencia
18.
J Chemother ; 20(4): 503-8, 2008 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-18676233

RESUMEN

The effectiveness of chemotherapy in elderly patients is still a matter of debate. We analyzed the toxicity and efficacy of the original FOLFOX2 regimen in middle aged and elderly patients affected by metastatic colorectal cancer. Consecutive patients with metastatic CRC and measurable disease were eligible. Seventy-eight partially pretreated patients were enrolled: 58 patients were defined as middle aged (<70 years) and 20 were elderly patients (>70 years). Elderly patients in comparison to middle-aged patients in a higher percentage were males. No significant differences were found in hematological and non-hematological toxicity between the two groups. No significant differences were found in the response rates, time to progression (5.9 vs. 6.0 months respectively), or median overall survival (20.9 and 21.8 months, respectively) between middle aged and elderly patients. The FOLFOX2 regimen provides equivalent feasibility, efficacy, and survival gain in middle-aged and in elderly patients with metastatic CRC.


Asunto(s)
Adenocarcinoma/tratamiento farmacológico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias Colorrectales/tratamiento farmacológico , Adenocarcinoma/secundario , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Neoplasias Colorrectales/patología , Progresión de la Enfermedad , Femenino , Fluorouracilo/administración & dosificación , Fluorouracilo/efectos adversos , Fluorouracilo/uso terapéutico , Humanos , Leucovorina/administración & dosificación , Leucovorina/efectos adversos , Leucovorina/uso terapéutico , Masculino , Persona de Mediana Edad , Compuestos Organoplatinos/administración & dosificación , Compuestos Organoplatinos/efectos adversos , Compuestos Organoplatinos/uso terapéutico , Oxaliplatino
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