Epibulbar Complex Choristoma Containing Bone: A Case Report and Closer Look at Classifications

Subsequent histological examination of the specimen revealed conjunctiva with underlying fibroadipose tissue and a rounded central fibrous nodule with bone containing some dilated thin-walled vessels (Fig. 3). According to the 5th edition of the WHO Classification of eye and orbital tumours, an epibulbar complex choristoma may contain additional “heterotrophic tissues like bone, cartilage, nerve, and skeletal muscle” [3]. Epibulbar choristomas are most often sporadic but can be commonly associated with Goldenhar syndrome or craniofacial microsomia, hence the importance of checking for other features including facial asymmetry and signs of incomplete development around the nose, soft palate, mandible, and ear on the ipsilateral side [12]. Conflict of Interest Statement The authors have no conflicts of interest to declare.