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Journal of Nuclear Medicine

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Meeting ReportOncology-Clinical Diagnosis: Solid Tumors

Clinical significance of abdominal/pelvic PET/CT findings for staging with head and neck malignancies

Shingo Baba, Koichiro Abe, Koichiro Kaneko, Takuro Isoda, Masayuki Sasaki and Hiroshi Honda
Journal of Nuclear Medicine May 2008, 49 (supplement 1) 359P;
Shingo Baba
1Clinical Radiology;
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Koichiro Abe
1Clinical Radiology;
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Koichiro Kaneko
1Clinical Radiology;
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Takuro Isoda
1Clinical Radiology;
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Masayuki Sasaki
2Health Sciences, Graduate School of Medical Sciences Kyushu University, Fukuoka, Japan
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Hiroshi Honda
1Clinical Radiology;
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Abstract

1517

Objectives: To evaluate the clinical significance of abdominal/pelvic PET/CT findings in initial and restaging after therapy of patient with head and neck malignancies.

Methods: A review of 292 consecutive whole-body FDG PET/CT data of various head and neck malignancies (cancer from pharyngeal; 68, laryngeal; 32, tongue; 55, gingival; 28, salivary grand; 13, external ear canal; 7, oral floor; 11 and thyroid; 78) was performed to identify metastatic lesion. PET/CT data was analyzed for the presence of metastatic disease in the neck, chest, abdomen and pelvis.

Results: Total of 292 patients with head and neck malignancy (160 females and 132 males, age 17-76 years) received initial or restaging scans. Amongst those patients for initial-staging scan (102), 8 patients (7.8%) displayed definite abnormal uptake in abdominal/pelvic area. Of those 8 patients, 2 unknown and one known bone metastases were identified. Other 5 abnormal uptakes were turned out to be minor abnormalities (physiological uptakes or adrenal incidentaloma etc.). Amongst those patients for re-staging (190), 23 patients (12.1%) displayed abnormal uptake in abdominal/pelvic area. Of those 23 patients, 3 identified additional metastases and 4 identified newly found other malignancies and 5 identified known metastases. Other 11 abnormal uptakes were turned out to be minor abnormalities. Therapy planning has been changed by FDG/PET findings of abdominal/pelvic area in 6 patients received re-staging scan and no patient for initial staging scan.

Conclusions: The utility of PET/CT scan of the lower abdomen and pelvis is limited for initial staging for head and neck malignancies, while still useful for re-staging.

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Journal of Nuclear Medicine
Vol. 49, Issue supplement 1
May 1, 2008
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Clinical significance of abdominal/pelvic PET/CT findings for staging with head and neck malignancies
Shingo Baba, Koichiro Abe, Koichiro Kaneko, Takuro Isoda, Masayuki Sasaki, Hiroshi Honda
Journal of Nuclear Medicine May 2008, 49 (supplement 1) 359P;

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Clinical significance of abdominal/pelvic PET/CT findings for staging with head and neck malignancies
Shingo Baba, Koichiro Abe, Koichiro Kaneko, Takuro Isoda, Masayuki Sasaki, Hiroshi Honda
Journal of Nuclear Medicine May 2008, 49 (supplement 1) 359P;
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