Malignant tumors in an ancient Egyptian population.

Abstract

Since it is still an open debate whether malignant tumors are mainly influenced by environmental factors, the frequency of such malignant tumors in historic populations with different living conditions is of particular interest. In the present study, we investigated the occurrence of malignant tumors affecting bone tissue in a population of mumrnies and skeletons, which had been excavated from the large necropolis of Thebes-West, Upper Egypt. Our study material comprised a series of at least 415 individuals (thereof 325 adults) dating from approx. 1500-500 B.C. All individuals had been mummified, but were severely damaged and partially broken by grave robbers, so that often only parts of the mummies/skeletons were available for investigation. The available specimens were subjected to careful macroscopic examination, while isolated findings were radiologically analyzed. Using this approach, we identified at least 4 cases showing malignant tumors affecting the skeleton. In two cases, multiple mixed osteolytic-osteoblastic lesions suggested multiple metastases from carcinomas. Two further individuals presented with multiple osteolyses (vertebra, pelvis, skull) most suggestive of multiple myeloma. The observation of at least 4 cases of malignant tumors with osseous manifestation in a series of 325 adult individuals provides clear evidence that malignant tumors were not a rare event in the ancient Egyptian study population, particularly when the limitations of a study of tumors manifested only in osseous remnants are taken into consideration. A calculation of the age- and sex-adjusted tumor frequency in our material in comparison with a recent model for such a material by Waldron (1996) indicates that the rate of malignant tumors with bone affection in our series is higher than in an English population from 1901-1905, although lower than in a comparable present day population. This clearly indicates that important factors affecting malignant tumors were effective even in historic populations.

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