Value of Ga-DOTA-TATE Positron Emission Tomography/Computed Tomography in the Localization of Culprit Tumors Causing Osteomalacia with Negative Tc-HYNIC-TOC Single Photo Emission Computed Tomography.
10.3881/j.issn.1000-503X.10693
- Author:
Shu ZHANG
1
;
Ling WANG
1
;
Tong WANG
1
;
Hai Qun XING
1
;
Li HUO
1
;
Fang LI
1
Author Information
1. Department of Nuclear Medicine, ,Beijing 100730,China.
- Publication Type:Journal Article
- MeSH:
Humans;
Neoplasms;
complications;
diagnostic imaging;
Octreotide;
analogs & derivatives;
Organotechnetium Compounds;
Osteomalacia;
diagnostic imaging;
etiology;
Positron Emission Tomography Computed Tomography;
Retrospective Studies
- From:
Acta Academiae Medicinae Sinicae
2018;40(6):757-764
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze Ga-DOTA-TATE positron emission tomography/computed tomography (PET/CT) imaging features of tumor-indud osteomalacia (TIO) patients with negative Tc-HYNIC-TOC single photo emission computed tomography (SPECT) findings and to investigate the value of Ga-DOTA-TATE PET/CT in accurate localization of culprit tumors.Methods We retrospectively analyzed Ga-DOTA-TATE PET/CT imaging features including location,size,density,the maximum and mean standardized uptake value in 37 TIO patients with negative Tc-HYNIC-TOC SPECT findings.Results Totally 37 solitary TIO tumors,including 35 phosphaturic mesenchymal tumors and 2 spindle cell tumors confirmed by pathological examinations,were detected via Ga-DOTA-TATE PET/CT scans in the included 37 cases. These 37 TIO tumors showed obviously increased activities,with an maximum standardized uptake value of 7.2±4.3 and mean standardized uptake value of 4.3±2.4. The average maximum diameter was (1.9±0.7) cm. The majority of the tumors occurred in the lower extremities (19/37),followed by the trunk (11/37),maxillary/mandibular bone (5/37),and upper extremities (2/37). In addition,24 bone lesions were located in long bones of lower extremities (13/24),most of which demonstrated eccentric growth (8/13). Osteolytic changes (14/24) were observed mainly in the lesions via the corresponding CT imaging;meanwhile,sclerotic changes presented in nine cases. Of the 13 soft-tissue lesions,the majority (10/13) showed well-circumscribed isodense or hypodense nodules on the CT images,with spot calcification in one lesion located in the pleura.Conclusions Ga-DOTA-TATE PET/CT scans can detect the TIO culprit tumors miss-diagnosed by Tc-HYNIC-TOC SPECT. Somatostatin-receptors highly expressed lesions with focal osteolytic or osteosclerotic change in bone and isodense or hypodense nodules in soft tissue will favor the diagnosis of TIO tumors.
