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OtherTeaching Case Studies

Differential tumor biology between locoregional and distant metastasis in a patient with TENIS with TKI-resistant aggressive recurrent disease: a comparative evaluation with FDG, 68Ga-DOTATATE and 68Ga-PSMA-11 PET-CT

Sunita Nitin Sonavane and Sandip Basu
Journal of Nuclear Medicine Technology December 2021, jnmt.121.263452; DOI: https://doi.org/10.2967/jnmt.121.263452
Sunita Nitin Sonavane
RADIATION MEDICINE CENTRE (BARC), Tata Memorial Hospital Annexe; Homi Bhabha National Institute, India
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Sandip Basu
RADIATION MEDICINE CENTRE (BARC), Tata Memorial Hospital Annexe; Homi Bhabha National Institute, India
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Abstract

The molecular PET-CT imaging profile of an interesting case of differentiated thyroid carcinoma, later transformed into with thyroglobulin elevation and negative iodine scintigraphy (TENIS) with tyrosine kinase inhibitor (TKI) resistant recurrent aggressive disease, is presented. The patient was evaluated to assess SSTR-2 or PSMA expression to explore the possibility of any effective targeted nuclear therapy. 18F-FDG, 68Ga-DOTATATE and 68Ga-PSMA-11 PET/CT was performed, which revealed tracer avidity in all 3 scans in the extensive loco-regional disease of large ill-defined retropharyngeal and retro-tracheal soft tissue eroding cricoid cartilage, extending into tracheal lumen and left sided strap muscles. On the contrary, there was no definite uptake in the multiple bilateral lung nodules, the scan findings indicating a differential tumor biology between loco-regional and distant metastasis.

  • Oncology: Endocrine
  • Oncology: Head and neck
  • PET/CT
  • 68Ga-DOTATATE
  • 68Ga-PSMA-11 PET-CT
  • FDG
  • TENIS
  • Thyroid Carcinoma
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Journal of Nuclear Medicine Technology: 50 (4)
Journal of Nuclear Medicine Technology
Vol. 50, Issue 4
December 1, 2022
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Differential tumor biology between locoregional and distant metastasis in a patient with TENIS with TKI-resistant aggressive recurrent disease: a comparative evaluation with FDG, 68Ga-DOTATATE and 68Ga-PSMA-11 PET-CT
Sunita Nitin Sonavane, Sandip Basu
Journal of Nuclear Medicine Technology Dec 2021, jnmt.121.263452; DOI: 10.2967/jnmt.121.263452

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Differential tumor biology between locoregional and distant metastasis in a patient with TENIS with TKI-resistant aggressive recurrent disease: a comparative evaluation with FDG, 68Ga-DOTATATE and 68Ga-PSMA-11 PET-CT
Sunita Nitin Sonavane, Sandip Basu
Journal of Nuclear Medicine Technology Dec 2021, jnmt.121.263452; DOI: 10.2967/jnmt.121.263452
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More in this TOC Section

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  • Evaluation of Hepatopulmonary Syndrome with 99mTc-Macroaggregated Albumin Scintigraphy
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Keywords

  • Oncology: Endocrine
  • Oncology: Head and neck
  • PET/CT
  • 68Ga-DOTATATE
  • 68Ga-PSMA-11 PET-CT
  • FDG
  • TENIS
  • thyroid carcinoma
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