Extraosseous Mimics of Skeletal Metastases on Bone Scintigraphy Resolved by PET- CT: A Case Report

Authors

  • Jinia Afrin Khan Senior Medical Officer, NINMAS, BMU campus, Block-D, Shahbag, Dhaka
  • Zeenat Jabin Director & Professor, Institute of Nuclear Medicine & Allied Sciences (INMAS), Suhrawardy
  • Afroza Naznin SMO, Institute of Nuclear Medicine & Allied Sciences (INMAS), Suhrawardy
  • Jerin Sultana MO, Institute of Nuclear Medicine & Allied Sciences (INMAS), Suhrawardy
  • Ilteza Tabassum MO, Institute of Nuclear Medicine and Allied Sciences (INMAS), Suhrawardy
  • Moontaha Binte Rashid MO, Institute of Nuclear Medicine and Allied Sciences (INMAS), Suhrawardy
  • Sudipto Das SO, Institute of Nuclear Medicine & Allied Sciences (INMAS), Suhrawardy
  • Kazi Reazuddin Ahmed SO, Institute of Nuclear Medicine & Allied Sciences (INMAS), Suhrawardy

DOI:

https://doi.org/10.3329/bjnm.v29i1.89304

Keywords:

Ewing Sarcoma; Hemipelvectomy; Positron Emission Tomography Computed Tomography; Bone Neoplasms; False Positive Reactions

Abstract

Surveillance imaging after complex pelvic reconstruction for Ewing’s sarcoma (ES) often presents diagnostic challenges due to reactive skeletal changes. This report presents the case of a 34-year-old male with left hemipelvic Ewing's sarcoma who underwent 17 cycles of chemotherapy followed by level I internal hemipelvectomy and reconstruction with a rod-and-screw construct and bone cement. A surveillance bone scan in June 2025 suggested osteoblastic recurrence in the left acetabulum and femoral neck. Subsequent FDG PET-CT demonstrated no focal hypermetabolic activity at these sites, identifying the bone scan findings as false positives caused by chronic remodeling and inflammation. This observation once again proves superior specificity of FDG PET-CT over bone scintigraphy, particularly in the presence of orthopedic hardware.

Bangladesh J. Nuclear Med. 29(1): 125-127, 2026

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Published

2026-05-19

How to Cite

Khan, J. A., Jabin, Z., Naznin, A., Sultana, J., Tabassum, I., Rashid, M. B., … Ahmed, K. R. (2026). Extraosseous Mimics of Skeletal Metastases on Bone Scintigraphy Resolved by PET- CT: A Case Report. Bangladesh Journal of Nuclear Medicine, 29(1), 125–127. https://doi.org/10.3329/bjnm.v29i1.89304

Issue

Vol. 29 No. 1 (2026)

Section

Case Reports

License

All rights reserved to Editor-in-Chief, Bangladesh Journal of Nuclear Medicine, Society of Nuclear Medicine, Bangladesh