ISSN:0894-8771    

出版商:OVID    

年代:2001

数据来源: OVID

摘要:

The pursuit of endometrial histology is often prompted by postmenopausal or dysfunctional endometrial bleeding, a pathologically-thickened central endometrial complex on ultrasound, infertility, or routine screening caused by risk factors for underlying pathology. If a focal endoluminal process is responsible, it can remain undiagnosed when a blind method of biopsy is used. Transvaginal ultrasound coupled with hysterosonography can provide the necessary information to triage these patients to the most appropriate tissue sampling technique and avoid the common problem of a false-negative biopsy result. In many circumstances, a focal process can be more specifically characterized and localized during hysterosonography, information which could also help direct subsequent hysteroscopic biopsy if needed.

ISSN:0894-8771    

出版商:OVID    

年代:2001

数据来源: OVID

摘要:

Urinary tract infection (UTI) in infants and children demands rapid differentiation between upper UTI (pyelonephritis) and lower UTI (cystitis) for prompt treatment to be initiated so that renal damage is minimized. This pictorial review presents a wide gamut of structural and functional abnormalities of the urinary tract that may predispose infants and children to UTI, including vesicoureteral reflux, upper urinary tract obstruction (ureteropelvic junction obstruction), lower urinary tract obstruction (primary megaureter, ureterovesical junction obstruction, posterior urethral valve, ectopic ureterocele with or without associated duplex collecting system), neurogenic problems (dysfunctional voiding), calculi, and parenchymal scars. Sonography (ultrasound [US]) is the imaging modality of choice for assessment of renal size, growth (serial sonograms), texture, and blood flow. Other modalities used to work-up UTI in the pediatric patient include fluoroscopic voiding cystourethrogram, nuclear voiding cystourethrogram, and nuclear renal scintigraphy (NRS). Excretory urography is no longer recommended in the routine evaluation of childhood UTI because information regarding anatomy and function (quanlitative and quantitative) can be better assessed with US and NRS, respectively. Computed tomography and magnetic resonance imaging are primarily reserved for complex cases in which a definitive diagnosis cannot be made with routine imaging. Algorithms for work-up of UTI in various pediatric age groups are presented.

ISSN:0894-8771    

出版商:OVID    

年代:2001

数据来源: OVID

摘要:

Mesenteric ischemia is an important clinical condition becoming more prevalent with aging of the population. Mesenteric ischemia may be manifest in an acute presentation, usually secondary to thromboembolism or cardiac insufficiency. Patients have abdominal pain, lactic acidosis, benign abdominal examination, and, often, coexistent multisystem organ dysfunction. Chronic mesenteric ischemia is secondary to proximal arterial stenosis or occlusions inadequately compensated by collateral flow. Clinical presentation may simulate occult malignancy. In this review article, the role of Doppler sonography and other diagnostic imaging tests in suspected acute mesenteric ischemia and mesenteric arterial insufficiency are evaluated with emphasis on diagnostic criteria and appropriate use in each clinical context.

ISSN:0894-8771    

出版商:OVID    

年代:2001

数据来源: OVID

摘要:

This article demonstrates the usefulness of ultrasound (US)-guided core needle biopsy in the diagnosis of thoracic lesions. Between January 1997 and June 2000, 45 US-guided core needle biopsies were performed in the department of radiology. This method was chosen in every case when the lesion abutted the chest wall. Conventional histologic examinations supplemented by immunohistochemical methods were performed. The location and size of the mass, the number of samplings, the needle size, the histologic results, and any complications were recorded. Twenty-two lesions reached the anterior, six reached the lateral, and 14 reached the posterior chest wall. Biopsies were performed on three masses from the supraclavicular region. The mean diameter was 4.5 cm and the number of passes was 1.8; 18-G, 16-G, and 14-G needles were used in 41, two, and two cases, respectively. In 43 of the 45 cases (95.68%), an exact histologic diagnosis could be provided. In two cases, only necrotic tissue was seen in the biopsy sample. No major complications occurred. Minor complications, including pain and collaptiform weakness, were documented in four patients. Ultrasound-guided core needle biopsy of thoracic lesions is a safe, quick, and accurate method. For diagnosing thoracic lesions, a single sample with an 18-G biopsy needle is sufficient to achieve a final diagnosis when using appropriate histologic methods.

ISSN:0894-8771    

出版商:OVID    

年代:2001

数据来源: OVID

ISSN:0894-8771    

出版商:OVID    

年代:2001

数据来源: OVID

ISSN:0894-8771    

出版商:OVID    

年代:2001

数据来源: OVID