68Ga-DOTATOC PET/CT in Pleural Solitary Fibrous Tumors

Clin Nucl Med. 2021 Jun 1;46(6):e336-e338. doi: 10.1097/RLU.0000000000003570.

Abstract

Solitary fibrous tumor of the pleura (SFTP) is a rare mesenchymal neoplasm. Preoperative diagnosis is usually difficult and based on radiological findings only. We report the imaging results observed in 5 patients with SFTP (2 malignant) obtained by 68Ga-DOTATOC PET/CT. At qualitative analysis, all tumors showed uptake of 68Ga-DOTATOC. Mean tumor SUVmax was 9.9 ± 5.7. The expression of SST2 (somatostatin receptors subtype 2) was confirmed by immunohistochemistry in 2 tumor samples, and by gene amplification of SST2 mRNA in all cases. These data suggest a diagnostic role of radioreceptor PET/CT in SFTP, and open novel potential treatment options in unresectable/metastatic disease.

MeSH terms

  • Adult
  • Female
  • Gene Expression Regulation, Neoplastic
  • Humans
  • Male
  • Middle Aged
  • Organometallic Compounds*
  • Positron Emission Tomography Computed Tomography*
  • Receptors, Somatostatin / metabolism
  • Solitary Fibrous Tumor, Pleural / diagnostic imaging*
  • Solitary Fibrous Tumor, Pleural / metabolism
  • Solitary Fibrous Tumor, Pleural / pathology

Substances

  • Organometallic Compounds
  • Receptors, Somatostatin
  • gallium Ga 68 dotatate
  • somatostatin receptor 2