<Li> Pyloric antrum, the initial portion of the pyloric part of the stomach . This is what is usually referred to as "antrum" in stomach - related topics . </Li> <Li> Maxillary antrum or antrum of Highmore, the maxillary sinus, a cavity in the maxilla and the largest of the paranasal sinuses </Li> <P> In invertebrates, it may refer specifically to: </P> <Ul> <Li> Antrum of female lepidoptera genitalia </Li> </Ul>

Where is the antrum located in the body