18F-FDG PET/CT in a 16-year-old patient with hydranencephaly

Clin Nucl Med. 2014 Oct;39(10):e445-7. doi: 10.1097/RLU.0000000000000316.


A 16-year-old male patient with a past medical history of congenital brain malformation presented for surveillance F-FDG PET/CT scan of left parotid acinic cell adenocarcinoma. F-FDG PET/CT revealed absence of gray matter activity in the bilateral cerebral hemispheres most consistent with hydranencephaly. Hydranencephaly is a rare congenital condition characterized by absent cerebral hemispheres replaced by cerebrospinal fluid-filled sacs. The etiology is hypothesized to be secondary to intrauterine bilateral internal carotid artery compromise. Most affected individuals die in utero or within weeks of birth; however, there are rare reported cases of prolonged survival as in our patient.

MeSH terms

  • Adolescent
  • Carcinoma, Acinar Cell / complications
  • Carcinoma, Acinar Cell / diagnostic imaging*
  • Fluorodeoxyglucose F18
  • Humans
  • Hydranencephaly / complications
  • Hydranencephaly / diagnostic imaging*
  • Male
  • Multimodal Imaging
  • Parotid Neoplasms / complications
  • Parotid Neoplasms / diagnostic imaging*
  • Positron-Emission Tomography
  • Radiopharmaceuticals
  • Tomography, X-Ray Computed


  • Radiopharmaceuticals
  • Fluorodeoxyglucose F18