Helical CT diagnosis of maxillofacial fractures associated with craniocervical junction injury / 中华创伤杂志

Objective To explore imaging manifestations and diagnostic value of helical CT in maxillofacial fractures associated with craniocervical junction injury. Methods Helical CT findings of ten cases with maxillofacial fractures involving the craniocervical junction injury were retrospectively analyzed and compared with other imaging techniques. Results There were five cases with both fractures of the maxilla and mandible combined with zygomatic arch fractures, three with mandible fractures combined with dislocation of temporomandibular joint and three with mandible fractures combined with slight and moderate craniocerebral injuries. The combined craniocervical junction injuries included atlantoaxial rotary dislocation in six cases, occipital condyle avulsion fracture in two and occipitocervical subluxation in two. Conclusions Maxillofacial fractures combined with the occipitocervical junction injuries are usually ligament injuries, with radiologic characteristics of avulsion fracture, occipitocervical subluxation and atlantoaxial rotary dislocation. Helical CT is a satisfactory mode for diagnosis of such fractures. More attention should be paid to mark of anatomical relation of craniocervical junction to avoid missed diagnosis.

Helical CT Findings and Misdiagnosis of Pulmonary Thromboembolism / 实用放射学杂志

Objective To investigate the diagnostic value of helical CT study in pulmonary thromboembolism.Methods A retrospective analysis was made on 16 misdiagnosed cases,studied previously with plain CT scanning.Results All of the 16 cases had positive findings on CT scanning,with sensitivity 100%.Among them,11 cases were misdiagnosed as pleural effusion plus pneumonia;3 pleural effusion;and 2,each of organized pneumonia and peripheral lung cancer.Conclusion The strong evidence of the disease could be given even with plain CT studies.The procedure is simple,safe and reliable,If a patient is suspected with the disease,and if CT is available in the hospital,CT should be the first choice in the study.

CT diagnosis on rupture of hepatic echinococcosis into the biliary tract / 中华放射学杂志

Objective To analyze the CT features of hepatic echinococcosis rupture into the biliary tract, and to assess the value of CT study in the diagnosis of such cases. Methods CT findings in 15 cases proved surgically and pathologically were studied and analyzed retrospectively. Results 15 patients had 20 hepatic echinococcosis, including simple echinococcosis with single cyst (9 lesions), simple hydatid cyst with multiple cysts (6 lesions), and multivesicular echinococcosis with multiple cysts (5 lesions). 2 lesions had calcifications on the cyst wall. The rupture of hepatic echinococcosis into the intrahepatic ducts was found in all 15 cases. Meanwhile, 12 of them had rupture into the common bile duct, and 2 into the gallbladder. The main CT findings were hepatic echinococcosis incorporated with the dilatation of the biliary tract. Conclusion Signs of rupture of hepatic echinococcosis into the biliary tract are characteristic in CT studies, providing a reliable evidence for preoperative diagnosis.