Objective To analyze triple receptor-negative breast cancer (TNBC) and non-triple receptor-negative breast cancer (non-TNBC),to determine the MR imaging characteristics of TNBC.Methods Data from two groups TNBC and non-TNBC patients were reviewed.Recorded the MRI features which involved the morphological features,kinetic lesion features and measured ADC values,As well as their clinical features and the pathological findings.Data were statistical analyzed in SPSS 17.0 software.Results There were significant difference between TNBC and non-TNBC in histological types,histologic grade,the situation of lymph metastases and mass shape,margin subgroup and lesion enhanced type,the ADC value (P ＜ 0.05).The special histological types for TNBC were squamous carcinoma (metaplastic carcinomas),medullary carcinoma,basal-like carcinoma.The number of lymph node metastasis in the TNBC group was 78.9 ％ (15/19).Histologically,TNBC were mainly Ⅲ grade (89.4 ％).In the group of TNBC,the percent of lobulated mass,margin smooth and rim enhancement was 52.6 ％,36.8 ％,42.1％,the higher ADC value of TNBC than non-TNBC.While there were no statistical significant differences in the age of onset,the maximum tumor diameter,the situation of menstruation,the situation of family history of breast cancer,the number of the mass,enhancement lesion type and the time-signal intensity curve type (P ＞ 0.05).Conclusion Some MRI features combined clinical and histopathological characteristics would be helpful in the diagnosis of TNBC.

Objective To investigate the application of three stages enhanced scan of multi-slice spiral CT for the characteristic analysis on the wall and lumen of colorectal mucous adenocarcinoma.Methods 51 patients with colorectal mucinous adenocarcinoma who had complete pathologic diagnosis were studied.GE Discovery CT 750HD scanner was used for line scan,arterial and portal venous phase scan,and delayed scan.The lesions of intestinal wall,enteric cavity and proximal normal lumen were observed by line scan and enhanced scan,and the related quantitative value and CT value were observed.Results The intestinal wall was uneven annular thickening or hemispherical thickening.The thickening intestinal wall showed lobular changes around the inner margin,outer margin,or without lobular changes.The hierarchical sign and cystoids sign were observed with three layers or two layers structure after enhanced scan.Metastases of the larger lymph node,liver,ovaries were characterized similar to cyst.According to the form,the stenosis was divided into natural streamlined,irregular fixed,and irregular constrictive types.The proximal normal intestinal canal of the lesion showed occlusion,mild expansion or severe expansion.Conclusions Walls of colorectal mucous adenocarcinoma was uneven annular thickening or hemispherical thickening,in which calcification was found,and there was features of similar to layer and cyst after enhancement.The stiff intestinal wall appeared less,and the proximal bowel obstruction was rare.Therefore,depend on these characteristics,the diagnosis of colorectal mucous adenocarcinoma can be achieved.

Objective To examine the expression of Noggin in CNS of the developing rat. Methods In situ hybridization histochemistry(ISHH) was performed using digoxigenin-labeled cRNA as probes. Results It was revealed that densely and deeply stained noggin positive cells were detected in cortex,hippocampus,cerebellum,and nucleus of hypothalamus and thalamus in embryonic day(E)16 rats.The number of noggin positive cells was increased in the thalamus and medulla oblongata at postnatal day(P)1-2,whereas decreased in the hippocampus and cortex.The number of noggin positive cells was decreased significantly in brain at 1 week postnatal(P1W),and began to increase at P2W,especially in the cortex and hippocamps.Strong positive signal can be detected in the frontal cortex,parietal cortex,cingulated cortex,hippocampus,olfactory and cerebellum at 1 month postnatal(P1M).The expression of noggin begins to decline at P3M,only sparse noggin positive cells can be seen in CNS at P18M.Furthermore,there is no noggin positive cells seen in the spinal cord of rats during development.Conclusion Our results indicated that noggin could play an important role in CNS development of rats.

Objective To explore the imaging and clinical pathological features of extranoda and intranoda lymphoma in head and neck characterized by computed tomography (CT) and magnetic resonance imaging (MRI).Methods 46 malignant lymphoma patients were confirmed by surgery and pathology.The CT and MR images data were reviewed and analyzed in comparison with surgical and pathological results.Diagnostic value of the CT and MRI findings were analyzed. Results The subjects enrolled in this study including 38 cases of non-Hodgkin lymphoma(NHL)and 8 cases of Hodgkin Lymphoma(HL).The pathological sites of extranodal lymphomas (45.65 ％,21/46) included nasal (10 cases),Waldeyer ring (7 cases),throat (2 cases),Thyroid(1 case) and parotid (1 case).The lymph nodes metastases in the neck were observed in 13 cases of Extranodal lymphomas.Intranodal lymphoma in neck (54.35 ％,25/46) involved all district lymph nodes especially Ⅱ-Ⅳ districts. According to the Ann Arbor staging,14 cases were Ⅰ staging, 19 cases Ⅱ staging,none Ⅲ staging,Ⅳ staging 13 cases.According tumor form,21 cases were multinodulars,12 cases mass type, 11 cases diffuse swelling type, 2 cases ulcer or necrotic type. Conclusion CT and MR images might indicate the location, morphology, surrounding tissue and lymph nodes metastases of malignant lymphoma in head and neck.Great value in clinical diagnosis and treatment is observed.

Objective To evaluate the value of high resolution MR imaging (MRI) with diffusion weighted imaging (DWI) in the preoperative diagnosis of rectal cancer. Methods 55 patients with rectal cancer may underwent high resolution MRI examinations before surgical operation, and with DWI (b=600, 1000 s/mm2). The apparent diffusion coefficient (ADC) of the tumors were measured. The image findings were compared with pathology. Select 15 patients without rectal lesion, ADC value of the tumors and normal rectal wall were measured. Results High resolution MRI diagnosis rectal cancer sensitivity, specific degree and coincidence rate were 95.7% (45/47), 50.0% (4/8), 89.1% (49/55), high resolution MRI with DWI diagnosis colorectal cancer sensitivity, specific degree and coincidence rate were 100.0 % (47/47), 75.0 % (6/8), 96.4 % (53/55). The high resolution MRI tumor T-staging agreed with the histological stage that was 88.9% (40/45), the diagnosis of T2 stage was 87.5 % (14/16), the diagnosis of T3 stage was 89.6 % (26/29). The same b-valued under the ADC values of rectal cancer tumors and the normal rectal were different (P ＜0.05). No correlation can be pointed out between ADC and pathological classification of each tumor.Conclusion High resolution MRI with DWI for the rectal cancer preoperative diagnosis and T-staging has higher diagnostic accuracy, DWI can serve as an important supplement sequence of colorectal cancer diagnosis.

Objective To investigate the effect of noggin on BrdU labeled cells in the adult rat hippocampus. Methods The expressions of noggin and bone morphogenetic protein 4 (BMP4) in rat hippocampus were detected using in situ hybridization histochemistry (ISHH) and reverse transcription polymerase chain reaction (RT PCR). By using antisense technique combined with bromodeoxyuridine!(BrdU) labeling, the effect of noggin on hippocampal neurogenesis in adult rats was explored. Results The number of noggin mRNA positive cells in the adult rat hippocampus decreased significantly after treatment with antisense noggin but no change was found in the number of BMP4 mRNA positive cells. In addition, the number of BrdU labeled cells decreased significantly in the adult rat hippocampus after treatment with antisense noggin, but the sense noggin had no such effect. Conclusion Noggin can promote proliferation of neural precursor cells in adult rat hippocampus.

Objective To observe the expression changes of noggin mRNA and BMP4 mRNA in the hippocampus and frontal cortex of rats at different stages. Methods The expressions of noggin mRNA and BMP4 mRNA were analyzed by the method of reverse transcriptase polymerase chain reaction (RT PCR).Results It was revealed that the level of noggin mRNA in the frontal cortex decreased significantly in P1W rats but high level of BMP4 mRNA was detected in P1M and P3M rats. The expressions of noggin mRNA and BMP4 mRNA in the hippocampus showed the opposite expression pattern. The peak of noggin mRNA expression in the hippocampus was found in E13 and E16 rats. The expression of noggin mRNA decreased gradually but that of BMP4 mRNA in hippocampus increased gradually during the developmental stage. The peak of the expression of BMP4 mRNA was found in P1M rats. Conclusion There are expressions of noggin mRNA and BMP4 mRNA in the frontal cortex and hippocampus in rats at different developmental stages. The expression level is closely correlated with the developmental age. This indicates that noggin and BMP4 play important roles in the development of rat frontal cortex and hippocampus.

Objective To investigate CT feature after contrast-enhanced and anatomic distribute of the whole body lymph nodes involved by lymphoma. Methods The whole body CT findings in 89 cases (HL 12 cases, NHL 77 cases) of malignant lymphoma were retrospectively analyzed. The contrast-enhanced CT features (size, density and the digree of contrast enhancement) and anatomic distribution of the whole body lymph nodes involved by lymphoma were clarified. Results In the HL group, Diffuse and homogeneous enhancement of the enlarged lymph nodes was found in 9 cases (75.0 %), while homogeneous enhancement of the enlarged lymph nodes with some little necrosis was found in 3 cases (25.0 %). In the NHL group, diffuse and homogeneous enhancement of the enlarged lymph nodes was found in 64 cases (83.1 %), while homogeneous enhancement of the enlarged lymph nodes with some little necrosis was found in 13 cases (16.9 %). There was not statistically significant (Fisher exact probability, P = 0.4461) between the two groups. In the HL group, the enlarged lymph nodes were mixed together in 6 cases (50.0 %), while the enlarged lymph nodes were separate in 6 cases (50.0 %). In the NHL group, the enlarged lymph nodes were mixed together in 8 cases (10.4 %), while the enlarged lymph nodes were separate in 69 cases (89.6 %), there was statistically significant (Fisher exact probability, P = 0.0028). The dominant anatomic distributions of the lymph nodes involved by HL group were neck and mediastinum. The dominant anatomic distributions of the lymph nodes involved by NHL group were neck, mediastinum and abdomen, there was not statistically significant between the anatomic distributions (Fisher exact probability, P =0.110). Conclusion CT can easily demonstrate the involvement and extension of malignant involving the whole body, but CT can not differentiate HL and NHL except for the confluence state.

Objective Make a scientific approach to the validity of 3D-VIBE MRI on breast tumor's evaluation.Methods 141 breast processes were examined by 3D Dynamic scanning technique with high speed and resolution, Compared with postop pathological appearance, the diagnosis of breast tumor, the ductal carcinoma in situ, their circumscriptions, and axillary lymph node metastasis were evaluated. Results The coincidence of tumor existence diagnosis was 97.2 ％(137/141). The accuracy, sensitivity and specificity of progression in duct were 69.4 ％(93/134), 75 ％(100/134), 57.1％(77/134), respectively.The accuracy,sensitivity and specificity of axillary lymph node metastasis were 92.5 ％(124/134), 53.8 ％(72/134), and 96.7 ％(129/134) respectively. Conclusion The reconstruction images through 3D Dynamic scanning technique with high speed and resolution could discover minute breast tumor and the extent of axillary lymph node metastasis around breast,and the extent of diseases in duct can also be effectively evalnated.

Objective To explore the HRCT characteristics of solitary pure bronchioloalveolar carcinoma.Methods Compared with postop pathological appearance,21 patients with 22 affections tumors which were pathologically confirmed pure bronchioloalveolar carcinoma were retrospectively reviewed.Results the histopathological results prior to surgery showed that 20 patients with 21 affections tumors were non-mucilaginous BAC and 1 patient was mucilaginous BAC.Noguchi's classification:Type A 3 cases,Type B 12 cases,Type C 5 cases.(Mucilaginous BAC was not classified)Stage classification:There were 21 cases with stage ⅠA,the maximum tumor diameter was from 0.3 to 3.0 mm (average diameter 1.3 mm).No case showed pleura metastasis,vessel invasion and lymphaticmetastasis.Appearance of HRCT:according to the amount of GGO,all affections were divided into 4 groups.A group(5/22),B group(7/22),C group(7/22),D group(3/22).There were 11 cases with pleura traction,5 cases with clear boundary and trimmed edges and other 17 cases were contradistinction.There were 21 cases with blood vessel or bronchus shadow.Conclusion HRCT can show scan can provide details of structure characteristics of BAC's pathological histology,so it plays an important role in prediction of pathological infiltration of tumor cells and prognosis assessment.