[Two cases of auricular pseudocyst].

Auricular pseudocyst is a benign idiopathic disease, which typically presents as painless spontaneous swelling over the anterior part of the auricle. It has usually been diagnosed in young healthy male patients. Its aetiology remains unknown, but hypothetically congenital dysplasia or chronic low-grade trauma could be the main causes.

Branchio-oto-renal syndrome: detection of EYA1 and SIX1 mutations in five out of six Danish families by combining linkage, MLPA and sequencing analyses.

The branchio-oto-renal (BOR) syndrome is an autosomal-dominant disorder characterized by hearing loss, branchial and renal anomalies. BOR is genetically heterogeneous and caused by mutations in EYA1 (8q13.3), SIX1 (14q23.

[Necrotising granulomatous inflammation with middle ear the only localisation].

Aggressive sarcoidosis is seldom described with the middle ear as the only localisation. A case is described, and differential diagnoses, such as tuberculosis, histocytosis X, Wegener's granulomatosis, paraffinoma, sarcoidosis and necrotising sarcoid granulomatosis are discussed.

[Perichondritis caused by high ear piercing. Therapeutic and legal aspects].

Three cases of auricular perichondritis caused by infection with Pseudomonas aeruginosa are described to draw attention to the high incidence of piercing-related infections and the risk of structural deformities to the outer ear. Various therapies and outcomes are described and current Danish legislation is highlighted.