Imaging findings of primary peripheral primitive neuroectodermal tumors of bone
10.3760/cma.j.issn.1673-4904.2019.12.015
- VernacularTitle: 原发性骨外周性原始神经外胚层瘤的影像表现
- Author:
Shengwei XIA
1
;
Xurong WANG
2
;
Jianyu XIANG
3
Author Information
1. Department of Radiology, Wenzhou Hospital of Traditional Chinese Medicine of Zhejiang, Zhejiang Wenzhou 325000, China
2. Department of Radiology, Yueqing People′s Hospital of Zhejiang, Zhejiang Yueqing 325600, China
3. Department of Imaging, Wenzhou People′s Hospital of Zhejiang, Zhejiang Wenzhou 325000, China
- Publication Type:Journal Article
- Keywords:
Bone tumors;
Peripheral neuroectodermal tumors;
Imaging
- From:
Chinese Journal of Postgraduates of Medicine
2019;42(12):1121-1126
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the clinical and imaging features of primary peripheral primitive neuroectodermal tumors (pPNETs) of bone.
Methods:Clinical and X-ray, CT and MRI findings of 6 cases of primary bone pPNETs in Wenzhou Hospital of Traditional Chinese Medicine of Zhejiang, Yueqing People′s Hospital of Zhejiang, and Wenzhou People′s Hospital of Zhejiang were retrospectively analyzed.
Results:There were 4 males and 2 females, aged from 2 to 38 years, with an average age of (18.5 ± 12.0) years old. Local pain was found in all cases, including 4 cases with mass, with an average survival of (22.2 ± 16.9) months. Iliac bone tumor was found in 2 cases, sacrum in 2 cases, scapula in 1 case and femur in 1 case. Digital radiography(DR) examination was performed in 4 cases:4 cases showed osteolytic destruction, including 1 case with mild swelling changes, 1 case with laminar periosteal reaction and radial bone needle, and 3 cases with soft tissue mass. CT examination was done in 4 cases, and there were 4 cases of osteolytic destruction accompanied by soft tissue mass without periosteal reaction. Among them, 1 case had irregular sclerosis at the edge of bone destruction and 2 cases had fine calcification in soft tissue mass. MRI examination in 4 cases:there were 3 cases with equal signal on T1WI and 1 case with moderate to high signal on T1WI, 3 cases with inhomogeneous medium and high signal on T2WI and STIR, and 1 case with homogeneous high signal on T1WI, and 4 cases with soft tissue masses and peritumoral edema.
Conclusions:Bone pPNETs is characterized by osteolytic destruction with soft tissue masses, periosteal reaction with or without periosteal reaction, and intratumoral calcification. Imaging examination is helpful to understand the extent of lesions, formulation of therapeutic measures and evaluation of therapeutic effect.
