Can 18F-FDG PET/CT Replace Bone Marrow Biopsy in the Rhabdomyosarcoma Patients?
Shantanu Pande1*, Nihit Mhatre2 and Ipsita Dhal3
1Assistant Professor, Department of Nuclear Medicine, All India Institutes of Medical Sciences, Nagpur, Maharashtra, India
2Senior Resident, Department of Nuclear Medicine, Tata Memorial Hospital, Dr E Borges Marg, Parel East, Mumbai, India
3Assistant Professor, Department of Pathology, Homi Bhabha Cancer Hospital and Mahamana Pandit Madanmohan Malaviya Cancer Centre, Sundar Bagiya, BHU Campus, Varanasi, India
*Corresponding Author: Shantanu Pande, Assistant Professor, Department of Nuclear Medicine, All India Institutes of Medical Sciences, Nagpur, Maharashtra, India.
Received:
May 17, 2022; Published: July 15, 2022
Abstract
Objectives: To evaluate role of 18F-fluoro-2-deoxy-D-glucose positron emission tomography/computed tomography (18F-FDG PET/CT) in assessing bone marrow involvement in rhabdomyosarcoma (RMS) patients, and whether 18F-FDG PET/CT findings render invasive bone marrow biopsy (BMB) unnecessary.
Materials and Methods: This retrospective study included 20 patients (age < 20 years) with biopsy-proven RMS who underwent 18F-FDG PET/CT and BMB for initial staging between August 2018 to December 2020. The 18F-FDG PET/CT scans were evaluated for bone marrow involvement and compared with the BMB results.
Results: The 18F-FDG PET/CT findings and BMBs excluded bone marrow involvement in 19/20 patients. In the remaining patient, 18F-FDG PET/CT suggested metastatic bone marrow involvement, and BMB detected marrow invasion by malignant cells. Thus, for evaluation of bone marrow involvement, 18F-FDG PET/CT showed a specificity and negative predictive value of 100%, suggesting that BMB may be unnecessary.
Conclusions: 18F-FDG PET/CT showed a high specificity and high negative predictive value for detecting bone marrow metastasis in RMS patients, and its use could preclude the need for invasive BMB. However, further studies are required, as our present work had certain limitations.
Keywords: Rhabdomyosarcoma; FDG PETCT; Bone Marrow Biopsy; Pediatrics
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