The diagnosis and treatment of neoplasms that on clinical examination present the picture of inflammatory lesions often prove extremely difficult.
REPORT OF CASE
History.
—A boy, aged 5, came to the Mayo Clinic with the complaint of a draining sinus in the forehead. The child had been delivered normally, weighed 91/2 pounds (4.3 Kg.) at birth, and development had been normal. His teeth appeared at the age of 5 months and he walked at the age of 16 months; he was breast fed for seventeen months and spoke intelligibly at the age of 2 years. Six months previous to being registered at the clinic, he sustained a bump on the forehead which was not very severe; two weeks later, a swelling appeared which increased to about 6.25 cm. in diameter, and following hot applications some fluctuation was detectable in the mass. The attending physician incised the mass two months after