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Table 3 Subsite scores and the ratio of involvement for the three-stage groups

From: Pediatric Langerhans cell histiocytosis of the temporal bone: clinical and imaging studies of 27 cases

Group Mastoid Squama External ear Middle ear Petrous apex
Stage 1 18 16.5 17.5 17 8.5
23.2% 21.3% 22.6% 21.9% 11.0%
Stage 2 13 13 6 8.5 1
31.3% 31.3% 14.5% 20.5% 2.4%
Stage 3 8 3 5 5 1
36.4% 13.6% 22.7% 22.7% 4.6%