Một số đặc điểm hình ảnh khác biệt của khối sau phúc mạc ngoài thận ở trẻ em trên phim chụp cắt lớp vi tính 128 dãy đầu thu

The 128 MSCT imaging differentiations of retroperitoneal extra-renal masses in children

SUMMARY

Perpose: Find out the differrentiation of 128 MSCT characteristics of retroperitoneal extra-renal mass in children

Material and methods: we had 128 MSCT images of 67 children patients in National Children’s hospital from January 2018 to April 2019 with pathologically proven of the retroperitoneal extra-renal masses. The patients was divided into 9 groups: neuroblastoma and ganglioneuroblastoma (n=42), Adrenal non-tumorigentic masses (n = 8 ), teratoma (n = 8), ganglioneuroma (n = 3), hemangioma (n = 1), neurofibroma (n = 1), rhadomyosarcoma (n = 1), undifferentiated pleomorphic sarcoma (n=1), pheochromocytoma (n = 1), york sac tumor (n = 1). We retrospectively reviewed the CT images of 67 children patients to find out the imaging differrentiation compared the enhancement level variations between groups and the enhancing of masses with muscle, liver, spleen.

Results: Age of all groups is from 3 days to 11 years, the age of adrenal non-tumorigentic masses is lowest. No statitistically significant different between male and female in retro-peritoneal extra-renal masses. Diameter of adrenal non-tumorigenntic group is smallest. Neuroblastomas, teratomas, geminoma and sarcoma are usually large. Encasement of vessel, calcification, abdominal lymph nodes and far metastasis findings are common signs in neuroblastoma and ganglioneuroblastoma group. Fatty and calcified CT findings are common in teratoma group. There are statitistically significant different enhancement level variation between groups. If the enhancing of the masses was lower than the muscle, these are usually benign. If the enhancement of the masses was higher than the muscle and lower than spleen, it can be benign or malignant, neuroblastoma is very common in this level. Hemangioma enhancement is higher than spleen.

Conclusions: There are differrentiations of 128 MSCT characteristics of retro-peritoneal extra-renal masses in children.

Keywords: retro-peritoneal extra-renal masses, multiple slices computer tomography (MSCT).