A 23-year-old female symptomatic with unilateral proptosis with superior globe displacement and hypertropia was found to have a multiloculated cystic lesion with bony lining arising from the inferomedial orbit. The adjacent maxillary sinus was markedly smaller on the affected side, with no defect of the wall on radiographic or intraoperative examination. Surgical excision and histological analysis of the lesion demonstrated an orbital respiratory epithelial cyst. A literature review of congenital orbital respiratory epithelial cysts is presented. To our knowledge, this is the first published case of choristomatous orbital respiratory epithelial cyst associated with ossification, and a primary or secondary anomaly of the adjacent sinus without bony defect.

Delleman-Oorthuys or oculocerebrocutaneous syndrome (OCCS) is an extremely rare condition which relies on three pillars of manifestations: ophthalmological, neurological, and dermatological. It was first described by Delleman and Oorthuys in 1981, and since then, very few other cases have been reported. We report the case of a 13-month-old boy, referred to an ophthalmological tertiary service for investigation of a microglobe with a cystic retrobulbar mass on translucency test. MRI revealed a left microphthalmia, with extensive retrobulbar cystic lesions occupying the remaining orbit and protruding anteriorly the microglobe. Cerebral findings included polymicrogyria, subependymal nodular heterotopia at the level of the left occipital horn of the lateral ventricle, and an importantly enlarged mesencephalic tectum observed in association with an absent cerebellar vermis. The ensemble of malformations met the criteria for definite OCCS. Being a tremendously rare syndrome, OCCS will always represent a diagnostic challenge. However, its emblematic cutaneous manifestations might be an important part of the road map leading to its correct interpretation. Thus, when absent, diagnosis can be harder than usual, and, on these cases, neurologists, ophthalmologists, and radiologists play a crucial role.

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Oculocerebrocutaneous or Delleman syndrome is a rare congenital syndrome characterized by microphthalmia/anophthalmia with or without orbital cysts, focal skin defects, intracranial cysts and skin appendages. We here report a case of 1-year-old male child with periocular skin tags, lid colobomas, and dermal hypoplasia. The patient had delayed developmental milestones and history of tonic-clonic seizures. Magnetic resonance imaging of the head revealed a large arachnoid cyst, aplastic cerebellar vermis and polymicrographic pattern of the cerebral cortex. A complex cyst of spleen was also noted on abdominal ultrasonography. Orbital cysts depending on the size can be excised or left alone. Neuroimaging evaluation of patients with congenital orbital cysts and skin appendages is emphasized for early and appropriate management.