The objective of a study by Lee et al. (A-5) was to improve understanding of the biologic behavior of gastric epithelioid stromal tumors. They studied the clinical features, histologic findings, and DNA ploidy of a series of the tumors to identify factors that might distinguish between benign and malignant variants of these tumors and have relevance for prognosis. Fifty-five patients with tumor were classified on the basis of whether their tumors were high-grade malignant (grade 2), low-grade malignant (grade 1), or benign (grade 0). Among the data collected were the following:
Patient Tumor Grade Outcome (1 ¼ Death from Disease)
Number of Days to Last Follow-Up or Death Patient Tumor Grade Outcome (1 ¼ Death from Disease)
Number of Days to Last Follow-Up or Death 1 0 0 87 8 0 0 1616 2 0 0 775 9 0 0 1982 3 0 0 881 10 0 0 2035 4 0 0 914 11 0 0 2191 5 0 0 1155 12 0 0 2472 6 0 0 1162 13 0 0 2527 7 0 0 1271 14 0 0 2782 15 0 0 3108 36 0 0 7318 16 0 0 3158 37 0 0 7447 17 0 0 3609 38 0 0 9525 18 0 0 3772 39 0 0 9938 19 0 0 3799 40 0 0 10429 20 0 0 3819 41 1 1 450 21 0 0 4586 42 1 1 556 22 0 0 4680 43 1 1 2102 23 0 0 4989 44 1 0 2756 24 0 0 5675 45 1 0 3496 25 0 0 5936 46 1 1 3990 26 0 0 5985 47 1 0 5686 27 0 0 6175 48 1 0 6290 28 0 0 6177 49 1 0 8490 29 0 0 6214 50 2 1 106 30 0 0 6225 51 2 1 169 31 0 0 6449 52 2 1 306 32 0 0 6669 53 2 1 348 33 0 0 6685 54 2 1 549 34 0 0 6873 55 2 1 973 35 0 0 6951 Source: Data provided courtesy of Dr. Michael B. Farnell.