Clinical evaluation of intraoperative block of abdomial aorta in sacral and pelvic tumors surgical operation / 中国癌症杂志

Purpose:To evaluate intraoperative block of abdomial aorta(BAA) in surgery of sacral and pelvic tumors as a useful adjuvant technique.Methods:Of 164 cases of pelvic tumor who underwent resections and hemisections, the procedures in 94 cases were non block of abdominal aorta(NBAA);in 109 cases of sacral tumors various extents of acrectomy was done,53 cases had NBAA,56 cases had BAA.Results:In the pelvic tumor group, the size of tumors for BAA were on the average bigger than NBAA by 0.8 cm, the operation was shortened by 2 h, the dose of hemorrhage decreased by 2 200 ml. The complications of operation were reduced by 6.3%, death rate reduced by 4.6%. In the sacral tumor group, the size of tumors for BAA were on the average bigger than NBAA by 0.7 cm, the operation was shortened by 1 h and 40 min, the dose of hemorrhage decrease by 1 600 ml. The complications of operations were reduced by 23%, death rate reduced by 7.5%.Conclusions:The adoption of BAA adjuvant technique can reduce the intraoperative hemorrhage,the death rate, and the complications of operation, while also shortening the surgical operating time, and is a valuable clinical technique. [

MRI of the sacral tumors(report of 29 cases) / 中华放射学杂志

Objective To explore the value of the diagnosis and differential diagnosis of the sacral tumors with MRI. Methods Twenty nine patients with histologically proven sacral tumors were viewed, including sacral chordoma( n =5), giant cell tumor( n =1), neurilemmona( n =3), ganglioneuroma( n =2), malignant lymphoma( n =4), osteosarcoma( n =1), malignant neurilemmoma ( n =1), and secondary tumors ( n =12).All patients were examined with MR,CT and plain radiograph. MR findings were analyzed. Results (1) sacral tumors involved sacral bone with a regularity. Four patients with sacral chordoma involved usually above S3 level, not including S1 bone. One patient with giant cell tumor involved S2 S3. Six patients with neuromas involved S1 S3, including S1 bone. (2) signal intensity: moderate and/or low signal on T 1 weighted images, mottled signal on T 2WI. (3) sacral pores were destructed, disappeared, or enlarged. Sacral pores enlarged in six patients with neuromas, destructed in others. (4) sacral canal were destructed, disappeared, or enlarged. (5) tumors were classified into central ( n =16), centrifugal ( n =9), and mixed ( n =4) types. (6) sacral tumors were segmental on sagittal MR images. Conclusion MRI is superior to CT and plain X ray in assessing classification, segment and sacral pores and the like, so MRI is very important to the diagnosis and the differential diagnosis of the sacral tumors.