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We report a case of sclerosing liver haemangioma with pericapillary smooth muscle proliferation in a 63-year-old man who presented with abdominal pain. Because the tumour showed atypical features on CT and MRI, a correct diagnosis could not be made until surgery. In this report, the atypical radiological findings are illustrated and correlated with pathological findings. 相似文献
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We present the multidetector CT findings with a pathologic correlation for the case of a solitary fibrous tumor located in the trachea. The MDCT revealed a well-circumscribed intraluminal mass arising from the trachea, with strong nodular enhancement in the periphery of the mass. The enhancement pattern of the mass corresponded histopathologically to a focal hypocellular area in the center and prominent blood vessels along the periphery of the mass. We also present volume-rendered and virtual bronchoscopic images of this rare submucosal tracheal tumor. 相似文献
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Tsuda M Miyaji H Ishibashi T Shouki Takahashi 《Nihon Igaku Hōshasen Gakkai zasshi. Nippon acta radiologica》2001,61(14):796-798
The purpose of this study was to present the time-related imaging findings and correlative pathological findings of irradiated regions in the rabbit liver. RF ablation was carried out on 16 rabbit livers. Irradiated regions were imaged at 3 days, 4 weeks, and 12 weeks. At 3 days, the regions showed a two-zone structure on plain CT and peripheral enhancement on the arterial phase. The regions presented a three-zone structure on pathological study. At 4 weeks, peripheral enhancement had almost disappeared, and a two-zone structure obscured on plain CT. The CT findings reflected pathological changes after RF ablation. 相似文献
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Hydro-dynamic CT preoperative staging of gastric cancer: correlation with pathological findings. A prospective study of 107 cases 总被引:26,自引:0,他引:26
The aim of this study was to evaluate the accuracy of dynamic CT in the preoperative staging of gastric cancer. One hundred
seven patients affected by gastric cancer diagnosed by endoscopic biopsy were prospectively staged by dynamic CT prior to
tumor resection. After an oral intake of 400–600 ml of tap water and an intravenous infusion of a hypotonic agent, 200 ml
of non-ionic contrast agent were administered by power injector using a biphasic technique. The CT findings were prospectively
analyzed and correlated with the pathological findings at surgery. The accuracy of dynamic CT for tumor detection was 80 and
99 % in early and advanced gastric cancer, respectively, with overall detection rate of 96 % (103 of 107). Three early (pT1)
and one advanced (pT2) cancers were undetected. Tumor stage as determined by dynamic CT agreed with pathological findings
in 83 of 107 patients with an overall accuracy of 78 %. The accuracy of CT in detecting increasing degrees of depth of tumor
invasion when compared with pathological TNM staging was 20 % (3 of 15) and 87 % (80 of 92) in early and advanced cancer,
respectively. The sensitivity, specificity, and accuracy of CT in the preoperative staging (pT3–pT4 vs pT1–pT2) was 93, 90,
and 91.6 %, respectively. The sensitivity, specificity, and accuracy of CT in assessing metastasis to regional lymph nodes
was 97.2, 65.7, and 87 %, respectively. Computed tomography correctly staged liver metastases in 105 of 107 patients with
an overall sensitivity of 87.5 % and specificity of 99 %. The sensitivity of peritoneal involvement was 30 % when ascites
or peritoneal nodules were absent. Our findings show that dynamic CT can play a role in the preoperative definition of gastric
cancer stage. The results can be used to optimize the therapeutic strategy for each individual patient prior to surgery, thus
avoiding unnecessary intervention and allowing careful planning of extended surgery in eligible patients.
Received: 29 June 1999, Revised: 20 October 1999, Accepted: 22 May 2000 相似文献
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A case of primary lymphoma of bone involving the proximal tibia is presented. The magnetic resonance (MR) appearances were unusual for a primary malignant tumour, with predominantly low signal intensity on both T1- and T2-weighted images. This correlated with marked fibrosis on histology. These observations are discussed in the context of previous reports of MRI in bone lymphoma. 相似文献
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Objectives. To illustrate the CT and MRI features of spinal osteoblastomas and correlate the imaging with histological findings. Design. In a retrospective review the CT and MRI features of spinal osteoblastomas with respect to mineralisation, signal intensity
(SI), adjacent reactive changes, enhancement following gadolinium-DTPA (5 cases) and adjacent soft tissue masses were compared
and correlated with the histological findings including the degree of osteoid formation and matrix mineralisation, vascularity
and surrounding reactive changes in bone and soft tissue. Patients. Eleven patients (7 males and 4 females; age range 8–43 years, mean age 19.5 years) with 12 osteoblastomas (1 patient suffered
a recurrence) were studied. Results. All lesions showed classical features on CT with varying degrees of matrix mineralisation, whereas MRI identified mineralisation
in only eight of 12 cases. MRI showed low signal intensity of the lesion on both T1- and T2-weighted sequences in several
cases in the absence of heavy mineralisation. In these cases, histological examination revealed diffuse osteoid production
by the tumour. All patients given gadolinium showed enhancement within the tumour on MRI. Reactive bone marrow changes were
identified on MRI in 10 cases, and in five of these the changes were at multiple levels. An adjacent soft tissue mass was
demonstrated in five cases, but extraosseous tumour was present histologically in only two of these. Conclusions. The MRI appearances of spinal osteoblastomas are varied and show no characteristic features. MRI may also overestimate the
extent of the lesion due to extensive reactive changes and adjacent soft tissue masses. CT should continue to be the investigation
of choice for the characterisation and local staging of suspected spinal osteoblastomas. 相似文献
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Intracerebral haemorrhage and cerebral amyloid angiopathy: CT features with pathological correlation. 总被引:3,自引:0,他引:3
AIMS: To review the computed tomography (CT) features of intracerebral haemorrhage pathologically proven to be associated with cerebral amyloid angiopathy in order to facilitate recognition of the presence of cerebral amyloid angiopathy in life. METHODS: We prospectively collected the clinical and brain imaging records of patients dying following an intracerebral haemorrhage who underwent a post-mortem examination and were found to have cerebral amyloid angiopathy. We reviewed the brain imaging to highlight features of the haemorrhage and of the rest of the brain common to these cases. RESULTS: Seven patients aged 60-86 years were examined over a 30-month period. On CT, the notable features were that the haemorrhages appeared large, lobar, often extended through the cortex to the subarachnoid space or into the ventricles, and were multiple and recurrent in patients who survived the initial bleed. The high density (blood) within the haematoma tended to sediment posteriorly. CONCLUSIONS: There are features on CT of cerebral amyloid angiopathy associated with spontaneous intracerebral haemorrhage which should raise the possibility of this underlying diagnosis. We suspect this condition is under-recognized in life, and should perhaps be considered more widely. 相似文献
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Tsuda M Rikimaru Y Saito H Ishibashi T Takahashi S Miyachi H Yamada S 《Nihon Igaku Hōshasen Gakkai zasshi. Nippon acta radiologica》2002,62(14):816-821
PURPOSE: To present the time-related imaging findings and correlative pathologic findings of radiofrequency pulse-irradiated regions of the liver. MATERIALS AND METHODS: Radiofrequency (RF) ablation was performed in 22 rabbit livers with 15-gauge RF probes inserted percutaneously. Regions were imaged with dual-phase CT at 3 days (n = 6), 2 weeks (n = 6), 4 weeks (n = 6), and 12 weeks (n = 4) after RF ablation. RESULTS: At 3 days, the regions showed a two-zone structure on plain CT and peripheral enhancement. The regions presented a three-zone structure on pathological study. Hepatocytes appeared as acidophilic bodies, and nuclei were pyknotic at the inner necrotic zone. The middle whitish zone showed enlarged sinusoids. The marginal zone was a regenerative band. At 2 weeks, the two-zone structure was obscured on unenhanced CT. The region showed a two-zone structure on pathological study. At the inner zone, acidophilic degeneration had progressed, however, cell structure remained. The marginal zone showed fibrous tissue bundles. At 12 weeks, the region was obscured on plain CT. Nuclei and cell structures had disappeared almost completely at the inner zone. Collagen fiber had replaced the marginal zone. CONCLUSION: Zone structural CT findings reflect the pathological findings and time-related changes after RF ablation. Peripheral enhancement in the arterial phase reflects the granulation tissue layer, and its time-related decrease reflects replacement by fibrous tissue. 相似文献
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Jingshan Gong Yue Zhang Min Zuo Zhong Yang Da Zang Shiyun Bao Jianmin Xu Xiaofang Yu Xiaomei Wang 《Clinical imaging》2009,33(3):196-199
Peripheral primitive neuroectodermal tumors (peripheral PNETs) are rare in the abdomen. We report the imaging findings of four peripheral PNETs arising in the abdomen. Three were ill-demarcated tumors and one was a well-demarcated tumor, with extensive local invasion and lymph node metastasis in two cases, respectively. The tumors are of inhomogeneous attenuation and heterogeneous enhancement after intravenous administration of contrast materials. Although their imaging manifestations cannot distinguish them from other sarcomas, recognition of these imaging features may be helpful in suggesting the possibility of peripheral PNETs in some cases. 相似文献
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Among the hepatic haemangiomas with atypical features when studied radiologically, the multicystic type is extremely rare. We report a case of multicystic hepatic haemangioma in a 62-year-old woman, which was found incidentally during ultrasound screening. Because the tumour showed atypical features on ultrasonography, CT and MRI, the correct diagnosis was not made until the surgery. In this report, the atypical radiological findings are illustrated and correlated with pathological findings. 相似文献
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C. H. G. Berchtenbreiter M. K. Stehling J. Scheidler K. Bise E. Waidhauser M. Reiser 《European radiology》1996,6(6):910-912
The CT and MRI findings in a case of an intracranial malignant fibrous histiocytoma are reported. Pathological correlation was demonstrated and tumour vascularization was best seen at angiography. Despite its low incidence in brain. MFH is of special interest because of its ubiquitous location and poor prognosis.Correspondence to: C. Berchtenbreiter 相似文献
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Segmental anatomy of the liver: poor correlation with CT 总被引:20,自引:0,他引:20
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Ryo Takaji Shunro Matsumoto Maki Kiyonaga Yasunari Yamada Hiromu Mori Yukio Iwashita Masayuki Ohta Masafumi Inomata Naoki Hijiya Masatsugu Moriyama Hajime Takaki Kengo Fukuzawa Hirotoshi Yonemasu 《Japanese journal of radiology》2017,35(1):10-15
Objectives
Periportal low attenuation (PPLA) associated with metastatic liver cancer is occasionally seen on multi-detector-row CT (MDCT). The purpose of this study was to investigate the MDCT patterns of the PPLA and to correlate it with pathological findings.Methods
We retrospectively reviewed the MDCT images of 63 patients with metastatic liver cancers from colorectal adenocarcinoma. On MDCT scans, PPLA associated with liver metastasis was visualized in six patients with colorectal cancer. In these six patients who had undergone surgical resection, the radiologic-pathologic correlation was analyzed. All patients underwent a single contrast-enhanced MDCT within 1 month before surgical resection. The six liver cancers were pathologically proven to be moderately differentiated adenocarcinoma. We assessed the PPLA on MDCT concerning the distribution patterns and contrast enhancement with pathological correlation.Results
In five of the patients, the PPLA extended to the hilar side from metastatic liver cancer. Pathologically, there was no cancer invasion into the intra-hepatic periportal area; however, massive lymphedema and fibrosis occurred in all six cases.Conclusions
PPLA on the hilar and peripheral sides of hepatic metastasis from colorectal cancer may be present suggesting lymphedema and fibrosis of portal tracts not always indicating cancer infiltration.17.
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PurposeTo describe computed tomography (CT) findings of primary synovial sarcoma of the kidney with pathological correlation.MethodsCT findings of four cases of pathologically confirmed synovial sarcoma of the kidney were retrospectively viewed and correlated with pathologic features.ResultsThe four synovial sarcomas presented as soft tissue masses with multiple smooth wall cysts. Pathologically, entrapped and dilated renal tubules formed the smooth wall cysts lined by hobnail tubular epithelium.ConclusionPrimary renal synovial sarcoma might manifest as a renal mass with multiple smooth wall cysts. The cysts are consistent with entrapped dilated renal tubular and are lined with hobnail tubular epithelium. 相似文献
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We describe the imaging features of a meningeal leiomyoma with pathological correlation in an adult with AIDS. On CT the
tumour showed a central low-attenuation area and an enhancing peripheral ring. It gave low signal on T1 weighting and on T2-weighted
images a central high-signal area was surrounded by a markedly low-signal band, which showed contrast enhancement. As far
as we know, this is the first report of this condition in the radiological literature.
Received: 19 January 1998 Accepted: 24 December 1998 相似文献