Table 1.

Distribution of cases according to the cytological and histological grading.

Grade	Fisher's system	Robinson's system	Dabbs' system	Khan's system	Taniguchi's system	Mouriquand's system	Howell's system	Histological grading
I	7	12	9	6	19	17	15	11
II	55	40	50	38	44	45	46	44
III	10	20	13	28	9	10	11	17
Total	72	72	72	72	72	72	72	72