Ulcer of the antrum

Ulcer of the antrumAn antrum in anatomy is the expansion of cavities inside different organs or bones:

Pyloric antrum: the oral beginning of the pylorus

Stomach antrum/Antrum cardiacum: the widened section of the esophagus between diaphragm and cardia

Mastoid antrum (Antrum mastoideum): the bigges airfilled cavity inside the Mastoid process of the temporal skull bone

Source: Endoskopie-Atlas