Abstract:
OBJECTIVE:Homosexual men are at risk for a variety of infectious and neoplastic diseases of the anus and rectum, many of which have been reported in the radiologic literature. The purpose of this study was to describe the CT findings in homosexual men with squamous cell carcinoma of the anus and rectum, a topic that has received little attention. MATERIALS AND METHODS:Computed tomography examinations of the abdomen and pelvis of nine homosexual men with squamous cell carcinoma of the anus and rectum were reviewed retrospectively. Six HIV-positive men were 28-44 years old (average, 37 years). Three HIV-negative men were 47-61 years old (average, 54 years). RESULTS:In six of the nine patients, CT showed a mass involving the anal canal. In five of these six patients, the tumor extended caudad to involve perianal fat and skin (one patient), cephalad to involve the rectum and perirectal fat (two patients), or both (two patients). In three of the nine patients, the anal canal did not appear to be involved by the tumor; CT showed circumferential rectal wall thickening (one patient), an excavated eccentric rectal tumor (one patient), or a cystic extramucosal rectal mass (one patient). Computed tomography evidence of noncontiguous metastasis was limited to inguinal and iliac lymph node enlargement in two of the nine patients. CONCLUSION:Because CT findings are varied and nonspecific, squamous cell carcinoma should be included in the differential diagnosis of anorectal lesions in homosexual men.
journal_name
J Comput Assist Tomogrjournal_title
Journal of computer assisted tomographyauthors
Radin DRdoi
10.1097/00004728-199411000-00013subject
Has Abstractpub_date
1994-11-01 00:00:00pages
921-4issue
6eissn
0363-8715issn
1532-3145journal_volume
18pub_type
杂志文章abstract:OBJECTIVE:The objective of the study was to characterize the enhancement pattern of hyperfunctioning parathyroid adenomas on multiphase multidetector computed tomography (CT) or 4-dimensional CT. METHODS:We retrospectively studied the enhancement patterns of 48 pathologically confirmed parathyroid adenomas with 4-dime...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e31822a1e70
更新日期:2011-09-01 00:00:00
abstract:OBJECTIVE:Dynamic MRI was used to analyze patterns of contrast enhancement in muscle layers in the normal uterine body and to evaluate the depth of myometrial invasion by endometrial carcinoma. MATERIALS AND METHODS:Dynamic MRI was performed in 18 normal volunteers and 22 patients with endometrial carcinoma. Eight of ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199401000-00017
更新日期:1994-01-01 00:00:00
abstract::We present a patient with a progressively enlarging adrenal mass detected by CT which extended to the renal hilum and inferior vena cava. Pathologic evaluation revealed an adrenal abscess containing purulent debris. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198705000-00040
更新日期:1987-05-01 00:00:00
abstract::We present a hemorrhagic adrenal adenoma surrounding and encompassing adjacent retroperitoneal fat to simulate the appearance of a myelolipoma by CT. A well-defined fibrous capsule, punctate calcification, and several macroscopic foci of fat within the mass led to an erroneous preoperative diagnosis. Lesions displayin...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199203000-00022
更新日期:1992-03-01 00:00:00
abstract:PURPOSE:The purpose of this work was to investigate the ultrasound (US) and CT features of dropped gallstones mimicking peritoneal seeding in patients after laparoscopic cholecystectomy (LCC). METHOD:We describe the US and CT features of dropped gallstones mimicking peritoneal seeding in eight patients who underwent L...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200211000-00025
更新日期:2002-11-01 00:00:00
abstract::The purpose of this 4-part series is to demonstrate the high-resolution axial and coronal anatomy of temporal bone from a flat-panel detector-based volume computed tomography (CT) scanner (parts I and II); these imaging planes are then used to outline the effect of different surgical procedures commonly applied to the...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/01.rct.0000171239.18301.96
更新日期:2005-07-01 00:00:00
abstract::This study illustrates detailed cerebral anatomy that can be consistently visualized on computed tomography scans after a rapid high dose of contrast substance has been infused. A thorough knowledge of anatomy is required not only to detect and precisely localize lesions but to avoid ascribing pathological significan...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-197904000-00001
更新日期:1979-04-01 00:00:00
abstract:OBJECTIVE:The goal of this study was to quantify changes in uterine volume during and after chemotherapy for breast cancer. MATERIALS AND METHODS:Fifty-eight patients (mean age 42 years) with advanced breast cancer undergoing treatment with FLAC (5-fluorouracil, leucovorin, Adriamycin, and cyclophosphamide) were studi...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199507000-00016
更新日期:1995-07-01 00:00:00
abstract:OBJECTIVE:MRI offers many opportunities for noninvasive in vivo measurement of structure-function relationships in the human brain. Although automated methods are now available for whole-brain measurements, an efficient and valid automatic method for volume estimation of subregions such as the frontal or temporal lobes...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199601000-00018
更新日期:1996-01-01 00:00:00
abstract::Glutaric aciduria type I is a rare disorder of organic acid metabolism caused by deficiency of glutaryl-CoA dehydrogenase. We report the cranial computed tomography (CT) and magnetic resonance (MR) imaging findings in a 5-month-old girl with this disorder who presented with an acute dystonic syndrome. CT findings demo...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200401000-00016
更新日期:2004-01-01 00:00:00
abstract::Hepatic actinomycosis is an uncommon entity that forms communicating abscesses and fistulae. A case is presented in which findings on ultrasound, CT, and percutaneous injection of the abscess all reflected the pathologic process. Biopsy by thin-needle aspiration under CT guidance afforded prompt, accurate diagnosis an...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198603000-00035
更新日期:1986-03-01 00:00:00
abstract::Several classification systems for neuroendocrine tumors (NETs) exist, which use variable terminology and criteria for grading and staging. This variability in terminology can cause confusion and difficulty in recognizing which tumors are, in fact, members of this heterogeneous group of malignancies. The largest group...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章,评审
doi:10.1097/RCT.0000000000000140
更新日期:2014-11-01 00:00:00
abstract:PURPOSE:The purpose of the study was to explore the feasibility and repeatability of diffusion tensor imaging and diffusion tractography on the anterior cruciate ligament graft after reconstruction and determine the fractional anisotropy and mean apparent diffusion coefficient values. MATERIALS AND METHODS:Twenty-two ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000198
更新日期:2015-03-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to compare the accuracy of 320-row computed tomography angiography (CTA) with conventional coronary angiography. METHODS:Two hundred seventy-four patients with coronary artery disease who received both invasive coronary angiography and 320-row CTA were included. Stenosis of 50...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e31826ab24a
更新日期:2012-11-01 00:00:00
abstract:PURPOSE:This study was designed to examine the use of quantitative magnetization transfer imaging (MTI) in naturally occurring globoid cell leukodystrophy (GLD) in the Cairn terrier. METHOD:A model of GLD was established via a breeding colony, and a total of seven animals were studied with MTI, including two dogs with...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200003000-00025
更新日期:2000-03-01 00:00:00
abstract::Dialysate leakage into subcutaneous tissues occurs not uncommonly in patients on continuous ambulatory peritoneal dialysis. When the leakage site cannot be localized clinically, CT with intraperitoneal contrast medium administration may localize the site. We report our experience with three cases in which this techniq...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198703000-00016
更新日期:1987-03-01 00:00:00
abstract:PURPOSE:Typically, the final step in volume registration is the reslicing of the volume of interest. The purpose of this work is to examine the effects of this reslicing on functional MRI (fMRI) data using different interpolation methods. METHOD:Functional whole-brain echo planar imaging (EPI) volumes were resliced us...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199709000-00029
更新日期:1997-09-01 00:00:00
abstract:OBJECTIVE:The aims of this study were to evaluate the dependence of diffusion parameters on the b values adopted for intravoxel incoherent motion diffusion-weighted magnetic resonance imaging and to investigate the application value of multiple diffusion parameters obtained from monoexponential and biexponential models...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000569
更新日期:2017-07-01 00:00:00
abstract:PURPOSE:Our goal was to characterize the MR features of pathologically documented gliosarcoma and to determine if these features help differentiate gliosarcoma from other intracranial neoplasms. METHOD:MR studies of six patients with pathologically documented gliosarcoma were retrospectively analyzed. RESULTS:The tum...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199609000-00006
更新日期:1996-09-01 00:00:00
abstract::The purpose of this report is to describe a further distinctive cause of crazy-paving pattern on thin-section computed tomography in a patient affected by pulmonary granulomatous mycosis fungoides. It was possible to reconcile the crazy-paving appearance on thin-section computed tomography scan with the histopathologi...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/01.rct.0000214269.72180.64
更新日期:2006-09-01 00:00:00
abstract:PURPOSE:The purpose of this work was to evaluate the radiologic findings of gastrointestinal (GI) tract involvement in hepatocellular carcinoma (HCC) and to discuss mechanisms of spread. METHOD:Eighteen patients with histologically proven GI tract metastasis in HCC for 4.5 years underwent CT and five also underwent up...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200201000-00014
更新日期:2002-01-01 00:00:00
abstract::A case of tuberculosis of the breast is presented. The mammographic, ultrasound, and CT appearances are described. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199411000-00023
更新日期:1994-11-01 00:00:00
abstract::Implementation of an accurate, reliable index of cost effectiveness would help to advance technology assessment and reimbursement of MR imaging procedures, including gadolinium enhancement. To this end, an objective, consensual measure that satisfies the need for "gold-standard" confirmation of diagnostic impressions ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199301001-00008
更新日期:1993-01-01 00:00:00
abstract::The utility of gadolinium-enhanced ultrafast MR imaging in the diagnosis of focal nodular hyperplasia (FNH) of the liver was assessed in one patient. Contrast-enhanced serial snapshot-FLASH with a frequency of 30 images/min demonstrated the typical hemodynamic appearance of FNH known from CT studies. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:
更新日期:1991-09-01 00:00:00
abstract:PURPOSE:The purpose of this study was to compare quantitative and qualitative measures of aortic, cardiac, and respiratory motion artifact between high-pitch dual-source (DS) and single-source (SS) computed tomography pulmonary angiography (CTPA) protocols. METHODS:This institutional review board-approved, Health Insu...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000736
更新日期:2018-07-01 00:00:00
abstract::Melorheostosis is a rare benign disease of cortical bone most frequently presenting as peripheral hyperostosis with a characteristic "melting wax" appearance on conventional radiographs. The disease most frequently affects the appendicular skeleton and is seen only rarely in the craniofacial bones. We discuss a case o...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e3181572998
更新日期:2008-09-01 00:00:00
abstract:OBJECTIVE:To assess the prognostic value of computed tomography (CT) in hyperacute middle cerebral artery (MCA) infarcts. METHODS:The CT features, total CT score, and National Institutes of Health Stroke Scale (NIHSS) score were correlated with the 30-day mortality in 16 patients with a hyperacute MCA infarct. RESULT...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/01.rct.0000136456.25506.c3
更新日期:2004-09-01 00:00:00
abstract::Multiple authors have pointed out the difficulty of detecting spondylolysis with lumbar CT. A simple method to detect spondylolysis on lumbar CT is described. Identifying one intact cortical ring for each vertebra absolutely excludes the diagnosis obviating the time-consuming need to search each image looking for posi...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:
更新日期:1985-07-01 00:00:00
abstract:PURPOSE:The goals of this work were to evaluate the practical utility of MRI to quantify myocardial mass in patients with hypertrophic cardiomyopathy (HCM), define the differences in myocardial mass measurements obtained with three-dimensional and geometric MR methods in patients with normal left ventricular morphology...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199907000-00018
更新日期:1999-07-01 00:00:00
abstract::In vivo attenuation values of 19 fluid collections in 17 patients were compared with in vitro values obtained on examination of the aspirated fluids within the calibration phantom of an EMI CT5005 body scanner. While the in vitro values showed a 5.2 Hounsfield unit (HU:1,000 scale). difference between cysts and absces...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198004000-00002
更新日期:1980-04-01 00:00:00