Author: Assoc Prof Patrick Emanuel, Dermatopathologist, Auckland, New Zealand, 2013.
Auricle pseudocysts are rare. They are usually asymptomatic swellings which arise either spontaneously or following trauma.
Histology of auricle pseudocyst
The lesion is a pseudocystic space within the substance of the cartilage (figure 1). The cartilage often shows degenerative changes and may show old haemorrhage and inflammation. There is no epithelium lining the space (hence the term “pseudocyst”). The pseudocystic space is filled with mucinous material (figures 1, 2, 3).