Benign High-Flow Priapism With a Diffuse and Intense 18 F-FDG Uptake on 18 F-FDG PET/CT Scanning Zakieh Nasiri, MD,* Soroush Zarehparvar Moghadam, MD,* Zahra Kiamanesh, MD,* Farshad Emami, MD,† and Ramin Sadeghi, MD* Abstract: We present benign high-flow priapism with intensive 18 F-FDG uptake as an unusual finding in a case of testicular teratocarcinoma with a history of left orchiectomy and chemotherapy. 18 F-FDG PET/CT scan showed pulmonary metastases, left obturator node involvement, and intense 18 F-FDG uptake in the penis. Upon examination, the patient had a painless erection that lasted for couple of days. Because of pulmonary metastases, second-line chemotherapy regimen was started by his physician. The patient's priapism resolved spontaneously, with no episode of recurrence at 2 years' follow-up. Key Words: 18 F-FDG uptake, benign, priapism (Clin Nucl Med 2019;44: e442–e444) REFERENCES 1. Sasikumar A, Harisankar CN, Bhattacharya A, et al. 18 F-FDG PET/CT in a case of malignant priapism secondary to metastasis from mucoid adenocarci- noma of the cecum. Clin Nucl Med. 2013;38:e91–e92. 2. Blanc E, Calais J, Cardot V, et al. (18)F-FDG PET/CT scan in malignant pri- apism with diffuse pulmonary adenocarcinoma metastatic invasion of both corpus spongiosum and cavernosum. Eur J Nucl Med Mol Imaging. 2014; 41:588–589. 3. Guo Y , Bai RJ, Gao S. FDG PET/CT detects malignant lymphoma invading the penis. Clin Nucl Med. 2011;36:e204–e206. 4. Eguíluz Lumbreras P , Palacios Hernández A, Heredero Zorzo O, et al. Malig- nant priapism and secondary bladder cancer. Arch Esp Urol. 2009;62:239–242. 5. Parida GK, Tripathy S, Roy SG, et al. Incidentally detected penile metastases in a patient of carcinoma urinary bladder on follow-up FDG PET/CT. Clin Nucl Med. 2017;42:e273–e274. 6. Nalbant I, Tuygun C, Gucuk A, et al. Posttraumatic high-flow nonischemic priapism. Pediatr Emerg Care. 2018;34:e70–e72. 7. Salonia A, Eardley I, Giuliano F, et al. European Association of Urology guidelines on priapism. Eur Urol. 2014;65:480–489. 8. Spagnul SJ , Cabral PH, Verndl DO, et al. Adrenergic α-blockers: an infre- quent and overlooked cause of priapism. Int J Impot Res. 2011;23:95–98. 9. Kilinc M, Piskin M, Guven S, et al. Partial priapism secondary to tamsulosin: a case report and review of the literature. Andrologia. 2009;41:199–201. Received for publication December 29, 2018; revision accepted April 1, 2019. From the *Nuclear Medicine Research Center, Mashhad University of Medical Sciences; and †Nuclear Medicine & Molecular Imaging Department, Imam Reza International University, Mashhad, Iran. Conflicts of interest and sources of funding: none declared. Correspondence to: Ramin Sadeghi, MD, Nuclear Medicine Research Center, Mashhad University of Medical Sciences, Ahmad Abad St, Ali Shariati Square, Mashhad, Iran, 91766-99199. E-mail: sadeghir@mums.ac.ir; raminsadeghi1355@yahoo.com. Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved. ISSN: 0363-9762/19/4407–e442 DOI: 10.1097/RLU.0000000000002616 INTERESTING IMAGE e442 www.nuclearmed.com Clinical Nuclear Medicine • Volume 44, Number 7, July 2019 Copyright © 2019 Wolters Kluwer Health, Inc. All rights reserved.