Size of the tumor: The size of adrenal tumor on CT is an important criteria in determining the potential of cancer in the tumor. In general adrenal cancers are greater than 6cm in diameter. Most tumors under 6cm are benign (non-cancerous). However occasionally small tumors 4cm or greater may be cancerous.
The Australian aborigines are believed to have come from Asia, crossing via a series of land bridges that existed thousands of years ago. They were the original inhabitants before the Europeans arrived.NA testing has  indicated that the Australian Aborigines originally came from the  Indian subcontinent. They are believed â¦ to have come to Australia  via the land bridges that existed thousands of years ago but which  are now submerged. On the Wallaby.
A study of skulls excavated from the tip of Baja California in Mexico suggests that the first Americans may not have been the ancestors of today's Amerindians, but another people who came from Southeast Asia and the southern Pacific area.nstead, her facial features matched most closely with the native Aborigines in Australia. These people date back to about 60,000 years and were themselves descended from the first humans who probably originated in Africa.