In recent years, cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) have been increasingly used for the treatment of peritoneal metastases. Imaging examination plays an important role in the process of CRS+HIPEC in treatment of peritoneal metastasis. This article briefly introduces the preoperative imaging evaluation, postoperative imaging evaluation, and current limitations of CRS+HIPEC in the treatment of peritoneal metastases.
ObjectiveTo summarize the common imaging features of liver cancer after local-regional therapy in order to more accurately evaluate the post-treatment response of it. MethodThe literatures of studies on imaging features after ablation, transcatheter therapy, and radiotherapy of liver cancer in recent years were searched and reviewed. ResultsIt was not accurate to evaluate the response of liver cancer after treatment only by comparing the size of tumor before and after treatment. We should follow up and observe the changes of enhancement components after tumor treatment, and pay attention to identify the normal features after treatment. ConclusionsImaging evaluation after local-regional therapy of liver cancer is of great significance in management and clinical decision-making of patients with liver cancer. Standard response evaluation systems such as EASL or mRECIST should be carefully applied after local-regional therapy of liver cancer. Treatment response of patients should be comprehensively evaluated in combination with the characteristics of local-regional therapy methods and timing, so as to avoid delaying timing of secondary treatment and causing excessive treatment.
Objective To assess the clinical efficacy of neoadjuvant chemotherapy （NAC） for breast invasive ductal carcinoma with MR diffusion weighted imaging. Methods Thirty patients with breast invasive ductal carcinoma underwent conventional MRI scanning and diffusion weighted imaging examination before and after preoperative neoadj-uvant chemotherapy. Two experienced radiologists independently analyzed and measured the maximum lesion diameter and apparent diffusion coefficient （ADC） values before and after treatment，respectively. Statistical analysis was performed for testing the tumor maximum diameter and ADC values change by using the paired t-test. Results After NAC treatment，the maximum tumor diameter of invasive ductal breast carcinoma sharply reduced〔（4.33±0.83） cm vs. （2.04±0.64） cm，P＜0.001〕. When b value was 1 000，the mean ADC values of breast massess were significantly changed after NAC treatment〔（1.89±0.15） ×10-3mm2/s vs. （1.14±0.31） ×10-3mm2/s， P＜0.05〕. Conclusion MR diffusion weighted imaging can non-invasively and accurately assess the NAC efficacy， which are helpful for making surgical strategies.
Objective To assess the significance of multi-detector row CT in differential diagnosis of the inguinal hernia and femoral hernia. Methods CT images which were reconstructed by multi-planer reconstruction （MPR） of 260 patients with inguinal hernia and femoral hernia who treated in our hospital form Oct. 1， 2012 to Oct. 31， 2013 were analyzed retrospectively， for exploring the relationship between sac and anatomic structure in the groin area. Results There were 146 patients with indirect hernia （75 in right， 60 in left， and 11 in bilateralism）， 82 patients with direct hernia（39 in right， 34 in left， and 9 in bilateralism）， and 32 patients with femoral hernia （17 in right and 15 in left）. The 157sacs of patients with indirect hernia originated lateral to the inferior epigastric artery， entered the inguinal canal and through the deep ring， which mainly located anterior （103/157， 65.6%） or anteromedial （36/157， 22.9%） to the spermatic cord or round ligament. The 91 sacs of patients with direct hernia originated medial to the inferior epigastric artery， and mainly located medial to the spermatic cord （70/91， 76.9%）. Sacs of both indirect hernia and direct hernia located anterosuperior to the inguinal ligament. The 32 sacs of patients with femoral hernia located posterior to the inguinal ligament and inside the “radiological femoral triangle” of coronal views. Conclusions The MPR images available from multi-detector row CT permit the accurate diagnosis of groin hernias. By using simple anatomical criteria， direct hernia， indirect hernia， and femoral hernia can be reliably distinguished．
Objective To investigate the situation and prospect of local recurrence of rectal cancer by using CT and MRI. Method Relevant references about the imaging diagnosis of local recurrence of rectal cancer， which were published domestic and abroad in recent years， were collected and reviewed. Results In the diagnosis of local recurrence of rectal cancer， the sensitivity of CT was higher than that of MRI， while the specificity and accuracy were not. Perfusion CT， dynamic contrast-enhanced MRI， and diffusion weighted imaging were valuable in diagnosing local recurrence of rectal cancer， as new diagnostic techniques. Conclusion Both CT and MRI are important and valuable methods in diagnosing for local recurrence of rectal cancer.