Hidrocystoma, also called Sudoriferous cyst, is an uncommon eyelid tumor originating from apocrine or eccrine sweat glands. Presentation of orbital hidrocystoma ar birth is a very rare entity.

Observational case report

A 39-weeks Caucasian female newborn with severe right eye extrusion. In ocular examination, she had severe right eye extrusion and a total corneal epithelial defect (CED) with a good red reflex. In palpation and transillumination, the right orbit seemed to include a cystic mass with fluid. Cyst aspiration was performed using ultrasonography guide; 15 cc clear fluid was obtained and proptosis resolved significantly. Orbital Magnetic resonance imaging showed a large uni-cysitic retrobulbar mass with hypointensity in T1 and hyper-intensity in T2. The case underwent further daily ocular assessment until day 5; when proptosis began to worsen again. On day 6, under general anesthesia, we performed aspiration and then the cyst was completely removed with an intact wall. The diameter of the aspirated cyst was about 4cm. In pathologic consultation, a cystic cavity lined by a layer of sweat duct like epithelium with apical snouts consistent with the diagnosis of apocrine hidrocystoma was reported.

To date, in the literature, six other cases have been reported in childhood with protean clinical pictures; none of which presenting at birth. Herein, we introduce the first case of presentation of massive hidrocystoma at birth and also provide a review on the related literature.