Asymptomatic Isolated Vulvar Metastasis in Old Treated Case of Carcinoma Rectum—Diagnosis and Treatment Response Evaluation by 18F-FDG PET/CT Scan

We report a clinically asymptomatic, old treated case of carcinoma rectum, presenting with raised serum carcinoembryonic antigen level, referred for 18F-FDG PET/CT scan for restaging. Whole-body PET/CT scan revealed an isolated FDG-avid lesion in the left labia majora region, which on histopathology was found to be metastasis from carcinoma rectum. Subsequent 18F-FDG PET/CT done after 4 cycles of chemotherapy revealed favorable response to therapy. 18F-FDG PET/CT facilitates the detection of unusual site of metastasis and its subsequent response evaluation in the index case. Received for publication October 13, 2018; revision accepted November 8, 2018. Conflicts of interest and sources of funding: none declared. Correspondence to: Dharmender Malik, MBBS, Department of Nuclear Medicine and PET/CT, Mahajan Imaging, Sir Gangaram Hospital, Old Rajinder Nagar, New Delhi 110060, India. E-mail: dharmendermalik0123@gmail.com. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.

from A via a.sfakia on Inoreader http://bit.ly/2SjMuY8