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Table 2 Histologic distribution of 203 cases of adnexal masses of children and adolescent by age of patient

From: Ovarian masses in children and adolescents in China: analysis of 203 cases

  Age of patient
  ≤9 y 10–14 y ≥15 y total
  No. % No. % No. % No. %
Germ cell tumor 5 5/7 (83.33%) 34 34/54 (62.96%) 59 59/153 (38.56%) 98 98/214 (45.79%)
34/37 (91.89%) 59/92 (64.13%) 98/136 (72.06%)
Mature teratoma 4   31   50   85  
Immature teratoma 1   2   2   5  
Endodermal sinus tumor 0   1   5   6  
Mix germ cell tumor      2   2  
Epithelial tumor 0 0 2 2/54 (3.70%) 29 29/153 (18.95%) 31 31/214 (14.49%)
2/37 (5.41%) 29/92 (31.52%) 31/136 (22.79%)
Mucinous tumor 0   2   13   15  
Benign 0   2   7   9  
Borderline 0   0   2   2  
Malignant 0   0   4   4  
Serous tumor 0   0   15   16  
Benign 0   0   11   11  
Borderline 0   0   4   4  
Malignant 0   0   0   0  
Sex cord-stromal tumor 2 2/7 (16.67%) 1 2/54 (1.85%) 4 4/153 (2.61%) 7 7/214 (3.27%)
2/37 (2.70%) 4/92 (4.35%) 7/136 (5.15%)
Granular cell tumor 1   0   0   1  
Steroid cell tumors 0       2  
Well differentiated      1    
malignant    1      
Dysgerminoma 1   0   3   4  
Nontumorous mass 0 0 17 17/54 (31.48%) 61 61/153 (39.87%) 78 78/214 (36.45%)
Parovarian cyst 0   1   18   19  
Lutein cyst 0   12   19   31  
other 0   4   24   28  
Total 7 7/214 (3.27%) 54 54/214 (25.23%) 153 153/214 (71.50%) 214 100
  1. Numbers in boldface represent percentage relative to 136 ovarian tumors.
  2. Numbers in parentheses represent percentage relative to 136 ovarian tumors.