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Table 1 Histological types and apparent diffusion coefficient (ADC) values of 202 ovarian masses

From: Diagnostic accuracy of diffusion-weighted imaging with conventional MR imaging for differentiating complex solid and cystic ovarian tumors at 1.5T

Type of ovarian mass Lesions, number High SI on T2-WI High SI on DWI Range of ADC values Mean ADC values
Benign ovarian lesions 74 39 (52.7) 53 (71.6) 0.12, 1.81 1.22 ± 0.46
Serous cystadenoma 28 22 (78.6) 28 (100) 1.23, 1.81 1.52 ± 0.19
Mucinous cystadenoma 17 13 (76.5) 17 (100) 1.12, 1.79 1.48 ± 0.20
Fibrothecoma 18 3 (16.7) 3 (16.7) 0.40, 1.58 0.82 ± 0.44
Cystadenofibroma 6 0 (0) 0 (0) 0.12, 0.94 0.52 ± 0.26
Brenner tumor 5 1 (20) 5 (100) 0.88, 1.44 1.06 ± 0.23
Malignant ovarian lesions 128 108 (84.4) 128 (100) 0.56, 1.45 0.91 ± 0.20
Serous cystadenocarcinoma 35 26 (74.3) 35 (100) 0.66, 1.35 0.97 ± 0.20
Mucinous cystadenocarcinoma 27 20 (74.1) 20 (100) 0.65, 1.31 0.89 ± 0.19
Serous borderline tumor 12 10 (83.3) 10 (100) 0.78, 1.45 1.05 ± 0.19
Mucinous borderline tumor 9 8 (88.9) 9 (100) 0.75, 1.36 0.99 ± 0.17
Clear cell adenocarcinoma 8 8 (100) 8 (100) 0.69, 1.01 0.82 ± 0.13
Endometrioid adenocarconoma 6 6 (100) 6 (100) 0.71, 1.06 0.93 ± 0.11
Granulosa cell tumor 7 6 (85.7) 6 (100) 0.79, 1.33 0.98 ± 0.18
Undifferentiated adenocarcinoma 5 5 (100) 5 (100) 0.64, 1.19 0.83 ± 0.23
Metastatic tumors 19 19 (100) 19 (100) 0.56, 1.09 0.86 ± 0.15
  1. Numbers in parentheses are percentages; ADC values, (mean ± SD × 10-3mm2/s); T2-WI, T2-weighted image; SI, signal intensity; DWI, diffusion-weighted imaging.