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Prognostic Value Of PET/CT Determined Sarcopenia in Patients with Resected Ampullary Carcinoma

Objectives: Our aim is to investigate the prognostic value and effect on chemotherapy toxicity of pre-treatment sarcopenia determined with positron emission tomography/computerized tomography(PET/CT) in patients with ampullary carcinoma. Methods: Characteristics of patients retrieved retrospectively. Skeletal muscle area(SMA) measurement of the muscle at L3 vertebra level was evaluated for each patient from their PET/CT scan taken at the time of diagnosis. The sex-spe-cific cut-off levels for determining sarcopenia were <38.5 cm2/m2 for females and <52.4 cm2/m2 for males. Association between oncological and radiological data was analyzed. Results: A total of 90 patients included in the study. Median age at diagnosis was 62(range: 44-77). Half of the patients were sarcopenic. Pre-treatment sarcopenia was determined as an independent variable predicting survival for both disease-free-survival(DFS) and overall survival(OS). Sarcopenic patients had statistically significant shorter OS(67.2 months for non-sarcopenic patients vs 53.2 months for sarcopenic patients, 95%CI:63.6-70.9, p<0.001), and a trend for shorter DFS(48 months for non-sarcopenic patients vs 36.8 months for sarcopenic patients, 95%CI:20.3-53.4, p=0.95) was also determined. On the other hand, chemotherapy related toxicity has also seen more in sarcopenic patients. Conclusion: Detecting the presence of pre-treatment sarcopenia may enable clinicians to predict the patient group with low survival and high probability of treatment toxicity. In order to protect this group of patients from toxicity, pre-treatment sarcopenia measurement should be applied in routine practice and should guide treatment plan. Abstract Cite This Article: Basoglu T, Ozguven S, Engur CO, Akagunduz F, Demircan NC, Arikan R, et al. Prognostic Value Of PET/CT Determined Sarcopenia in Patients with Resected Ampullary Carcinoma. EJMI 2023;7(1):32–41.