Lithopedion is a rare phenomenon which occurs most commonly when a fetus dies during an abdominal pregnancy, with only few known cases such as Antamma of Mominpur, West Bengal,  India in 1977, Huang Yijun of China in 1948, and Joaquina Costa Leite of Natividade, Tocantins State,  Brazil in 1970, for example.
A lithopedion  also spelled lithopaedion or lithopdion  (Ancient Greek:  = stone; Ancient Greek:  = small child, infant), or stone baby, is a rare phenomenon which occurs most commonly when a fetus dies during an abdominal pregnancy, is too large to be reabsorbed by the body, and calcifies on the outside as part of a foreign body reaction, shielding the mother's body from the dead tissue of the fetus and preventing infection. Antamma (70) Mominpur, West Bengal, India 1977 Huang Yijun (92) People's Republic of China 1948 Natividade, Tocantins State, Brazil 1970 Joaquina Costa Leite
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