dunno if i told you, but i've heard from 3 tropical disease specialists now who say it's probably Burkitt's lymphoma. Here is what i could find about Burkitts on the web. as you can see from the pics, it looks like Amazone's got it.
Burkitt’s lymphoma (or Burkitt Lymphoma) is an uncommon type of Non-Hodgkin Lymphoma (NHL). Burkitt’s lymphoma commonly affects children. It is a highly aggressive type of B-cell lymphoma that often starts and involves body parts other than lymph nodes. In spite of its fast-growing nature, Burkitt’s lymphoma is often curable with modern intensive therapies.
There are two broad types of Burkitt’s lymphoma – the sporadic and the endemic varieties. There is a very high incidence of this disease in equatorial Africa, and disease in this region is called endemic Burkitt’s lymphoma. Disease in other regions of the world is much less common, and is called sporadic Burkitt’s lymphoma. Though they are the same disease, the two forms are different in many ways.
In equatorial Africa, about half of all childhood cancers are Burkitt’s lymphoma. The disease involves children much more than adults, and is related to Epstein Barr Virus (EBV) infection in 95% cases. It characteristically has a high chance of involving the jawbone, a rather distinctive feature that is rare in sporadic Burkitt’s. It also commonly involves the abdomen.