Imaging features and growth characteristics of solid pseudopapillary tumor of pancreas / 第二军医大学学报

ABSTRACT

Objective: To analyze the computed tomography (CT) and magnetic resonance imaging (MRI) features of solid pseudopapillary tumor of pancreas (SPTP) and to study the growth characteristics, so as to improve the understanding and diagnosis of SPTP. Methods: The clinical data, and CT and MRI data of 103 patients with SPTP confirmed by postoperative pathology, who underwent surgical resection in our hospital between May 2012 and Nov. 2018, were analyzed retrospectively. The gender, age, tumor maximum diameter, tumor location, tumor shape, pseudocapsule, cystic degeneration, intratumoral hemorrhage and calcification were analyzed, and the stratified analysis was carried out according to gender, age, tumor maximum diameter and tumor location. Results: A total of 104 lesions (25 lesions in males and 79 in females) of 103 SPTP patients (25 [24.3%] males and 78 [75.7%] females) were included. The average ages of the males and females were (40.4 ± 11.3) years old and (32.9± 12.0) years old, respectively, and the difference was significant (P = 0.004). The mean tumor maximum diameters of the males and females were (36.8 ± 25.3) mm and (50.0 ± 31.2) mm, respectively, and the difference was significant (P = 0.046). The results of stratified analysis showed that the females were more likely to have pseudocapsule (62 cases), cystic degeneration (41 cases) and intratumoral hemorrhage (37 cases) compared with the males (13 cases, 3 cases and 6 cases, respectively), and the differences were significant (all P 3 cm are more likely to have pseudocapsule, cystic degeneration, hemorrhage and calcification.