Wooden model of Aké
A Chinese boy with a partially-formed parasitic twin protruding from his stomach (or sternum), Aké was examined by Philadelphia physician John Kearsley Mitchell in 1821. Mitchell published his findings in a medical journal, and Aké became somewhat of a medical celebrity at the time. Models of Aké, whether they were wood or ceramic, were used at other medical schools around the world to teach about parasitic twins. A British surgeon studied him from Hong Kong, models were sent to London’s Museum of the Royal College of Surgeons, and at least two models came to Boston – one went to the Boston Society for Medical Improvement and the other was acquired by John Collins Warren.