Abstract
Sarcopenia influences the short- and long-term outcomes of various medical conditions including malignancy. Ishii's screening test estimates the probability of sarcopenia based on a score calculated by three simple variables: age, grip strength, and calf circumference. We investigated the clinical significance of Ishii's score for patients with non-metastatic obstructive colorectal cancer (OCRC) who underwent curative surgery after intraluminal decompression. Ishii's score was calculated in 79 patients with OCRC. Muscle volume loss and decreased muscle quality were evaluated by computed tomography (CT) images as skeletal muscle index (SMI) and intramuscular adipose tissue content (IMAC), respectively. There were 46 men and 33 women, with a median age of 70years old. The cutoff value for Ishii's score was 155.1 and 15 patients were in the high-score group. The high-score group was significantly associated with worse time to recurrence (TTR) and overall survival (OS), and a high Ishii's score was an independent negative prognostic factor for TTR (hazard ratio = 2.93, P = 0.015). A high Ishii's score was significantly associated with a low SMI value but not with the IMAC value. A high Ishii's score was independently associated with poorer TTR in patients with non-metastatic OCRC.
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