We present a case of Burkitt's lymphoma, American type, with massive a
bdominal involvement, in a 11 years old boy, who presented with mucous
-cutaneous paleness, cephalalgia and melaena. The localization of the
lesion in the gallblader and the rectum is stressed as being exception
al. We emphasize the importance of a rapid diagnosis to start early ch
emotherapy because this lesion grows rapidly. In our case after eight
days of chemoterapy treatment there was a 75% reduction of the tumor m
ass.