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Primary Extraosseous Ewing Sarcoma on 18 F-FDG and 68 Ga-FAPI-04 PET/CT.
Clin Nucl Med
November 2024
Department of Pathology, Mianyang Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Mianyang, China.
Primary extraosseous Ewing sarcoma of the nasal cavity is rare. A 17-year-old man underwent 18 F-FDG and 68 Ga-FAPI-04 PET/CT for a nasal mass. The mass showed avid FDG uptake but weak FAPI uptake.
View Article and Find Full Text PDFTc-99m-MDP Uptake in Extraosseous Metastases from Ovarian Papillary Serous Adenocarcinoma.
Mol Imaging Radionucl Ther
October 2024
All India Institute of Medical Sciences, Department of Nuclear Medicine, Bhubaneswar, India.
The uptake of Tc-99m-uptake of Tc-99m-methylene diphosphonate (MDP) on bone scintigraphy can be seen at sites other than bone in a varying number of benign and malignant conditions. Extraosseous metastatic calcifications can occur in ovarian papillary serous adenocarcinoma (PSAC). These extraosseous calcifications show Tc-99m-MDP uptake.
View Article and Find Full Text PDFExtraosseous Ewing Sarcoma in a 28-Year-Old Male: A Case Report and Literature Review.
Cureus
July 2024
Hematology and Oncology, Saint Francis Hospital, Hartford, USA.
Ewing sarcoma (ES) is an uncommon and highly aggressive bone malignancy that predominantly occurs in children and young adults. Extraosseous Ewing sarcoma (EES), an even rarer variant, can present in the soft tissues instead of bone. In this case report, we detail a previously healthy 28-year-old male presenting with an isolated enlarged left inguinal lymph node, subsequently diagnosed as EES.
View Article and Find Full Text PDFDiagnosis of Extraosseous Lesions Overlapping the Bones on Bone Scintigraphy.
Clin Nucl Med
November 2024
Department of Nuclear Medicine, Zigong First People's Hospital, Zigong Academy of Medical Sciences, Zigong, Sichuan, China.
Extraosseous MDP uptake was not uncommon on the bone scintigraphy. When the extraosseous activity is overlapping the bones, it might cause difficulty in interpreting the result when only static images were acquired. Here we report 2 cases that abnormal MDP activity overlapping the bones on planar images, which were confirmed as soft tissue lesions by SPECT/CT or CT imaging.
View Article and Find Full Text PDFUnusual Soft Tissue Uptake of Tc-99m MDP in Radiation-induced Sarcoma: Diagnostic Conundrum.
Mol Imaging Radionucl Ther
June 2024
Sultan Qaboos Comprehensive Cancer Care and Research Center, Department of Radiology and Nuclear Medicine, Muscat, Oman.
Tc-99m methylene diphosphonate (MDP) is a bone imaging agent used for skeletal staging, but it can also be localized in extraosseous calcifying lesions. We report a case of an 84-year-old woman with breast carcinoma who underwent surgery followed by radiotherapy 10 years ago and now presented with a right axillary mass referred for Tc-99m MDP to exclude bone metastasis. Tc-99m MDP shows intense tracer uptake in the right thoracic region corresponding to the site of calcified soft tissue mass in the right lateral chest wall.
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