Clinicopathologic features and outcomes following surgery for pancreatic adenosquamous carcinoma |
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Authors: | Jun-Te Hsu Han-Ming Chen Ren-Chin Wu Chun-Nan Yeh Ta-Sen Yeh Tsann-Long Hwang Yi-Yin Jan Miin-Fu Chen |
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Institution: | 1. Division of Surgical Oncology, Department of Surgery, Arthur G. James Cancer Hospital and Richard J. Solove Research Institute and Comprehensive Cancer Center, The Ohio State University, OH 43210, Columbus, USA 2. Section of PET, Division of Nuclear Medicine, Department of Radiology, The Ohio State University, 43210, Columbus, OH, USA
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Abstract: | Background The use of diagnostic 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography/computed tomography (PET/CT) imaging for the staging, restaging, and treatment monitoring of melanoma patients has become a well-recognized standard of care. It plays a key role in detecting sites of occult disease and is widely utilized in the medical and surgical planning of such patients. In the current report, we describe an innovative multimodality approach of perioperative 18F-FDG PET/CT imaging, intraoperative 18F-FDG handheld gamma probe detection, and intraoperative ultrasound for tumor localization and verification of resection of all sites of hypermetabolic tumor foci in a case of occult recurrent metastatic melanoma. Case presentation This report discusses a case of occult recurrent metastatic melanoma, isolated to three separate sites within the subcutaneous tissues of the left thigh region, which was not clinically apparent but was found on diagnostic restaging whole body 18F-FDG PET/CT scan utilizing an intravenous injection of 14.8 mCi 18F-FDG. Then, on the day of surgery, the patient received an intravenous injection of 12.8 mCi 18F-FDG. A multimodality approach of intraoperative handheld gamma probe detection, intraoperative ultrasound tumor localization, specimen PET/CT imaging, and postoperative PET/CT imaging was utilized for accomplishing and verifying the excision of all three sites of occult recurrent metastatic melanoma within the left thigh region. Conclusion This innovative multimodality approach of perioperative 18F-FDG PET/CT imaging, intraoperative 18F-FDG handheld gamma probe detection, and intraoperative ultrasound is promising combined technology for aiding in tumor localization and verification of excision and may ultimately impact positively upon long-term outcome of selected patients. |
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