1st PET Scan Report

My 1st PET/CT Scan at Mount Elizabeth Hospital, Singapore

X-Ray Number : MEH05234115
Date of Reg. : 30/3/2005
Patient Name : GAN ING LEONG
Requested Examination : PET/CT SCAN
Age/Sex : 39 / Male
Ref. Doctor : DR KHOO KEI SIONG
Case / MRO No. : 2050024379

F-18 Fluorodeoxyglucose PET/CT STUDY

Indication:
NPC. Staging.

Technique:
Positron emission tomographic (PET) scan, coupled with non-contrast CT scan was acquired 13.10minutes after intravenous administration of 395 MBq of F-18 Fluordeoxyglucose (blood glucose 4.2mmol/l). CT data was used for attenuation correction and to provide anatomical correlation. The images were reviewed in the transaxial, coronal and sagittal projections.

Findings:
Axial and coronal images of the neck and nasopharynx demonstrate one hypermetabolic FDG avid soft tissue left nasopharyngeal mass (SUVmax of 7.1). It crosses the midline and extends towards right. Anteriorly, it extends into posterior nasal cavitye and superiorly to the sphenoid sinus. There is erosion of the clivus, with intracranial extension. Infratemporal fossae and the parapharygeal spaces are clear. Mild changes are noted in the left mastoid air cell, consistent with mastoiditis. There is no evidence of FDG avid cervical lymphadenopathy.

There is no evidence of FDG avid mediastinal or hilar lymphadenopathy. No suspicious pulmonary nodules are detected either. No consolidation or pleural effusion is seen on the CT images.

There is physiological uptake and excretion by the gastrointestinal and genitor-urinary tract. Fatty changes are noted in the liver on the CT images. No focal area of abnormal increased glycolysis is detected within the liver, adrenals or spleen. Incidental gallstones are noted. There is no evidence of FDG avid abdominal or pelvic lymphadenopathy. No suspicious pelvic masses are detected either. No ascites is seen on the CT images.

Marrow activity appears to be within normal limits.

Clinical impression:
1. Hypermetabolic FDG avid left nasopharyngeal mass with intracranial extension is noted. Anteriorly it extends into the posterior nasal cavity, and also crosses the midline to the right. This would be consistent with the known primary.

2. There is no evidence of FDG avid metastatic lymphadenopathy.

3. No abnormal lesion is detected to suggest FDG avid distant metastatic disease elsewhere.