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Objective To analyze the mammographic features of ductal carcinoma in situ (DCIS) of the breast and the correlation between the mammographic and pathologic findings, and try to provide clinical criteria for selecting patients for appropriate local treatment. Methods A retrospective study was performed to analyze the mammographic features and to correlate the mammographic and pathologic findings in 29 consecutive cases of DCIS including 8 cases of DCIS associated with small invasive foci. Results (1)There were various features in mammograms of DCIS, including cluster microcalcifications (20 cases), ill defined mass with calcifications (3 cases), mass (4 cases), nipple retraction associated with big ductal dilatation (1 case), and normal mammogram (1 case). (2)The shape of the calcification cluster distributed as V shaped in 7 cases, round in 8 cases, irregular in 5 cases, and scattered as many small areas in one quadrant in 3 cases.(3)1 lesion appeared as strip from the deep aspect of the breast to the nipple, and 3 masses were round. (4)The comedo subtype (7/9) and the high grade nuclei of DCIS (6/9), correlating with poor prognosis, were more likely to be accompanied by linear and branching calcification. Noncomedo DCIS (11/12) and low grade nuclei (11/12) were more likely to be associated with granular and punctate calcification when microcalcification were seen on mammogram. There was statistically significant difference between the two groups with P =0.002 and P =0.009 respectively (Chi square test, Fisher′s exact method). Conclusion The mammographic findings of DCIS were characteristic. They were closely associated with the pathologic features that were correlated with the biomolecular findings. To some extent, the choice of treatment could be based on these mammographic findings.
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Objective To evaluate the clinical value of CT scan in the diagnosis of tracheoesophageal groove lymph node (TEGLN) metastasis of thoracic esophageal carcinoma. Methods Forty-six patients with thoracic esophageal carcinoma underwent esophagectomy with three-field dissection (3FD) of the cervical, mediastinal, and abdominal lymph nodes. CT findings of TEGLN were compared with that of pathological findings. Results Among the 46 patients who underwent esophagectomy with 3FD, 14 (30%) were found to have TEGLN metastases. Of the 277 TEGLNs excised by operation, 16 were found to have metastases. Primary sites of the thoracic esophageal carcinoma with TEGLN metastasis in upper, middle, or lower portion were 66.67%, 22.86%, and 40%, respectively. The difference between each portion was not statistically significant. The thoracic esophageal carcinoma with TEGLN metastasis in T 1, T 2, T 3 and T 4 staging were 50.00%, 25.00%, 28.57%, and 100.00%, respectively. There was no statistically significant difference between each T staging. 18 TEGLNs were found in CT scans. The average diameter of them was 1cm (0.3～2.5 cm). Sensitivity and specificity of CT examination were 87.50% and 98.47%, respectively. Positive predict value and negative predict value were 77.78% and 99.23%, respectively. Conclusion In patient with thoracic esophageal carcinoma, nodules appeared in tracheoesophageal groove could be diagnosed as lymph nodal metastases. Low cervical and mediastinal CT scan should be a conventional examination, and it was the basis of the radiation therapy plan. Dissection of TEGLN was very important for patient of thoracic esophageal carcinoma, but if bilateral tracheoesophageal grooves were negative in CT scans, and bilateral internal jugular chain and bilateral superclavicular lymph node were both negative in clinical examination. 3FD dissection, which could increase the rate of operative complication, was not conventionally used.
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Purpose:To assess the value and limitation of CT in staging colorectal carcinoma.Methods:CT was performed prior to surgery in 46 patients with 48 colorectal carcinomas for staging the tumor. The results were compared with those of surgical and pathological examinations in all cases in order to study the sensitivity of staging the tumor before operation.Results:(1) CT depicted 31 of 33 pathologically confirmed T4 lesions (beyond the serosa) in all 48 primary carcinomas,appearance of T4 lesion were defined as either strands of soft tissue or nodules into the peri-colorectal fat ,or hyperdensity of pericolorectal fat. (2)Pathologic examination of lymphatic metastases unfirmed 20 of 40 patients who underwent complete resections, and these lymph nodes were not larger than 1cm in 17 patients.The sensitivity is 70%(14/20)and the specificity 85%(17/20)respectively in detection of lymphatic metastases for CT. (3) The accuracy of CT staging was 81.25%,77.50% in T,N respectively in this group of patients,and CT showed all 4 cases of liver metastases and 6 of 7 peritoneal metastases. Conclusions:CT is accurate in detecting T4 stage of colorectal carcinoma. It is effective in depicting local extension and distant metastases. The value of CT for early T staging and N staging in colorectal carcinoma is limited.
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0.05,respectively. Chi-square test, Fisher′s exact method). Conclusion The mammographic features of mucinous breast carcinoma show differences in pure and mixed types of the tumor. The most common mammographic appearance of pure mucinous carcinomas with high volume of mucin is a mass with microlobulated margins. Pure type of carcinomas with small volume of mucin and mixed type carcinomas have more aggressive imaging characteristics.
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Objective To evaluate the CT features and pathologic findings of MTC. Methods The CT features of 28 patients with MTC confirmed pathologically were analyzed retrospectively and correlated with pathologic findings. Results The tumor invaded one lobe of the thyroid in 22 cases(78.6%), two lobe in 6 cases(21.4%). 5(17.9%) of them presented with heterogeneous hypodense masses and 23(82.1%) of them presented with homogeneous hypodense solitary masses . 20 patients had metastatic lymph nodes. The thyroid masses were enhanced slightly, while the lymph nodes were enhanced obviously. Correlating with pathologic findings, the heterogeneous lesions composed of cystic areas and/or necrosis, while the homogeneous lesions composed of homogeneously distributed tumor cells with no cystic areas or necrosis. The metastatic lymph nodes were hypervascular. Conclusion The CT features of MTC may be described as homogeneous diffuse hypodense mass, with slight enhancement,and invasion of one thyroid lobe in most cases. The metastatic lymph nodes are characterized with enhancement.
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Purpose: To determine breast carcinoma detection rate of a new mammographic computer-aided system (CAD) in order to assess its clinical usefulness. Methods: 467 cases of breast carcinoma proved by surgery and pathology were retrospectively analyzed. All the mammograms of the cases were reviewed by two radiologists working as a team and then analyzed by the CAD-system. The sensitivity for breast carcinoma detection (masses or calcification) was calculated respectively, and the results compared. Results: The sensitivity for breast carcinoma detection by the same radiologists without and with the CAD-system were 80. 94% , 88. 01% , respectively (P