Background: Portal hypertension is a major complication resulting from obstruction of portal blood flow, like cirrhosis or portal vein thrombosis, that leads to portal hypertension. MDCT angiography has become an important tool for investigation of the liver as well as potentially challenging varices by detailing the course of these tortuous vessels. This information is decisive for liver transplantation as well as for common procedures in which an unexpected varix can cause significant bleeding. Results: This study included an assessment of 60 cases of portal hypertension (28 males and 32 females), their age ranged from 42 to 69 years (mean age = 57.2 ± 6.63). All patients were diagnosed with portal hypertension, underwent upper GI endoscopy followed by a triphasic CT scan with CT angiographic assessment for the screening of gastro-esophageal varices. CT is highly sensitive as compared to upper GI endoscopy (sensitivity 93%) in detecting esophageal varices. Gastric varices detected by CT in 22 patients (37%) compared to 14 patients (23%) detected by endoscopy. While paraesophageal varices were detected in 63% of patients and retro-gastric varices in 80% of patients that were not visualized by endoscopy. Our study reported that the commonest type of collaterals were the splenic collaterals, and we also found there is a significant correlation between the portal vein diameter and the number of collaterals as well as between the portal vein diameter and splenic vein diameter. Conclusions:Multi-slice CT serves as an important non-invasive imaging modality in the diagnosis of collaterals in cases of portal hypertension. CT portography can replace endoscopy in the detection of high-risk varices. It also proved that there is a correlation between portal vein diameter, splenic vein diameter, and number of collaterals.

Background Studying breast carcinoma is of great importance as it is the commonest female malignancy. Accurate preoperative assessment of disease characteristics and prognosis would be of great help in the diagnosis and treatment planning of breast cancer. The aim of this study was to evaluate the role of the apparent diffusion coefficient (ADC) value in detecting the grading of invasive breast carcinoma prior to management. Results There was a significant difference between the mean ADC value of tumors of grade I and III (p = 0.001) and between grade I and II (p = 0.002). However, there was no significant difference between grade II and III (p = 0.979). High ADC values were associated with low-grade tumors. The mean ADC value of 0.93 × 10–3 mm2/s showed sensitivity 98%, specificity 100%, PPV 100%, NPV 83.3%, accuracy 98.2%, AUC = 0.994, and 95% confidence interval of 0.978 to 1.000. Conclusion DWI is a contrast-free modality that allows for both morphological and quantitative analysis. ADC value may not be the proper modality to determine the prognosis of breast cancer due to overlap values, yet it could be a good discriminator between low- and high-grade tumors and hence predictor of breast cancer cells that would respond to chemotherapy.

Background: Breast cancer is undoubtedly the world's most frequent cancer among women. Triple-negative breast cancer (TNBC) is a subtype of breast cancer that does not express estrogen, progesterone, or human epidermal growth factor receptors, yet its imaging is considered a challenge to radiologists having imprecise features. In this study, we aimed at defining the MRI characteristics of triple-negative breast cancer to validate its impact on management. Results: Most of the TNBCs in this study showed malignant pattern kinetic curves (types II and III), 87/104 (83.7%), and P value 0.673 (not significant), and regarding the type of lesion enhancement, 104/172 cases (60.5%) showed mass enhancement compared to 52/172 (30.2%) non-mass enhancement and 16/172 (9.3%) focus enhancement, P value 0.185 (not significant). As for the internal enhancement pattern of mass lesions, rim internal enhancement was predominant in TNBC mass lesions, 48/104 (46.2%), as well as intratumoral bright signal intensity on T2-weighted images, 108/172 (62.8%), P value 0.001 (highly significant). Conclusion: Triple-negative breast cancers (TNBC) are larger, better defined, and more necrotic than conventional cancers. On MRI, necrosis yields high T2-weighted signal intensity.

Background: Pelvic floor dysfunction is known to be among the principal factors influencing public health, regarding frequency, cost and effect on women's quality of life. Radiographic assessment of the pelvic floor function and anatomy plays a vital role in the recognition of pelvic floor defects. The aim of this study is to detect the postpartum-related levator ani muscle changes thus defining the relationship between the vaginal deliveries and the etiology of pelvic floor dysfunction in order to provide guidelines to decrease the incidence of pelvic floor injuries during parturition and guide the treatment plan. Results: There was a significant difference in the puborectalis muscle thickness between the case and control groups in the right puborectalis (P value ≤ 0.001) and in the left puborectalis (P value (≤ 0.001) as well as significant midpoint thickness (P value = 0.03) with 46.2% puborectalis muscle injury in the case group compared with none in the control group. Conclusion: Pelvic floor MRI is highly recommended as it is a contrast-free modality that allows for both anatomical and functional analysis. Its incorporation in the routine postpartum assessment will allow early detection of abnormalities even in asymptomatic cases thus ensuring proper management and preventing the development of pelvic floor dysfunction predisposed to by repeated vaginal deliveries.

Background: Breast cancer is a broad spectrum disease, including tumors showing different clinical, pathologic, molecular, and imaging features. Triple-negative breast cancer (TNBC) has an extra aggressive clinical course and poor prognosis being considered a diagnostic challenge to breast radiologists, yet it presented quite a lot of predictors on DCE-MRI; these could be valuable in identifying TNBC from other breast cancer subtypes. In this study, we aimed at assessing the DCE-MRI features of triple-negative breast cancer in comparison to other subtypes of breast cancer.Results: There was a significant difference between both groups regarding the internal enhancement pattern of mass lesions (P value 0.001), as well as intratumoral bright signal intensity on T2-weighted images (P value < 0.001). However, most of the breast cancer subtypes in this study showed malignant pattern kinetic curves type II and III showing no significant difference (P value 0.673).Conclusion: TNBC presented several features with significant differences from other breast cancer molecular subtypes on DCE-MRI including the shape of the lesion and pattern of enhancement as well as high T2 signal intensity, thus improving the diagnosis of TNBC.