Table 2:

Imaging features for CS and SCa

Independent VariablesTotal (n = 47)CS (n = 12)SC (n = 35)P ValueInterobserver Agreement
Lesion center<.001b,c.832f
 Joint space40 (85.1)5 (41.7)35 (100)
 Mandibular condyle7 (14.9)7 (58.3)0 (0)
Destruction of the mandibular condyle31 (66.0)11 (91.7)20 (57.1).037b,c.905f
Sclerosis of the mandibular condyle23 (48.9)8 (66.7)15 (42.9).193c.872f
Destruction of the articular eminence/glenoid fossa31 (66.0)4 (33.3)27 (77.1).012b,c.856f
Sclerosis of the articular eminence/glenoid fossa29 (61.7)2 (16.7)27 (77.1)<.001b,c.861f
Infiltration into the tendon of the LPM17 (36.2)12 (100.0)5 (14.3)<.001b,c.908f
Calcification37 (78.7)8 (66.7)29 (82.9).251c.828f
Pattern of calcification.008b,d.835f
 Absence10 (21.3)4 (33.3)6 (17.1)
 Stippled9 (19.1)6 (50.0)3 (8.6)
 Flocculent4 (8.5)0 (0.0)4 (11.4)
 Ring-and-arc9 (19.1)0 (0.0)9 (25.7)
 Popcorn15 (31.9)2 (16.7)13 (37.1)
Periosteal reaction12 (25.5)8 (66.7)4 (11.4).001b,c.827f
Osteophyte10 (21.3)2 (16.7)8 (22.9)1.000c.873f
Peripheral enhancement19 (79.2)11 (91.7)8 (66.7).317c.864f
Internal enhancement15 (62.5)12 (100.0)3 (25.0)<.001b,c.830f
Lesion size28.5 (SD, 7.4)37.1 (SD, 8.2)25.6 (SD, 4.2)<.001b,e.932g
X/Z ratio1.6 (SD, 0.3)1.5 (SD, 0.2)1.7 (SD, 0.3).067e.928g

  • a Values are the number of patients with percentages in parentheses or the mean ± SD.

  • ↵b Statistically significant.

  • ↵c Fisher exact test.

  • d Linear-by-linear association test.

  • ↵e Student t test.

  • ↵f Cohen κ coefficient.

  • ↵g Intraclass correlation coefficient.