Case 18



Dr Marina-Portia Anthony /Dr Henry Mak
Clinical notes
A 56 year-old male presented with headache, nausea and unsteady gait. An MRI showed a left cerebellar tumour with oedema and obstructive hydrocephalus. A PET/CT was requested to determine if the lesion was primary or secondary.
Images
Figure 1. Axial contrast-enhanced CT (A), fused PET/CT (B) images through the cerebellum.
Figure 2. Axial contrast-enhanced CT (A), fused PET/CT (B) images through the supraclavicular region.
Figure 3. Axial contrast-enhanced CT (A), fused PET/CT (B) images through the mid chest.

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Findings
Diagnosis
Discussion

References
  1. Chorost M, Lee C, Yeoh C, et al. Unknown Primary. Review Article. J Surg Oncol 2004;87:191-203.
  2. Dong M, Zhao K, Lin X, et al. Role of fluorodeoxyglucose-PET versus fluorodeoxyglucose-PET/computed tomography in detection of unknown primary tumor: a meta-analysis of the literature. Nucl Med Commun. 2008;29(9):791-802.
  3. Kumar V. Abbas A. Fausto N. Robbins and Cotran Pathologic Basis of Disease. 2005. Elselvier. Pennsylvania.
  4. Kwee T, Kwee R. Combined FDG-PET/CT for the detection of unknown primary tumors: systematic review and meta-analysis. Eur Radiol. 2009;19(3):731-44.