关于额骨骨瘤的发生率,以往文献有以下报告: 1.1939年分析3570例鼻窦X线片,发现15例骨瘤,其中12例位于额窦中,谓此种病变并不少见。 2.1929年分析鼻窦骨瘤200例,各鼻窦的发生率如下:额窦50％;筛窦40％;上颌窦6.2％;蝶窦3.6％。 3.1952年分析鼻部良性肿瘤72例如下: On the incidence of frontal bone osteoma, the previous reports have the following reports: 1.1939 years of analysis of 3,570 cases of sinus X-ray film and found that 15 cases of osteoma, of which 12 cases were located in the frontal sinus, that the lesion is not uncommon. 2. 1929 analysis of 200 cases of sinus osteoma, the incidence of each sinus are as follows: frontal sinus 50%; ethmoid sinus 40%; maxillary sinus 6.2%; sphenoid sinus 3.6%. 3 1952 analysis of 72 cases of benign nasal tumors as follows: