Fig. 1. A. FISH (fluorescence in situ hybridization) assay diagnostic of Williams–Beuren syndrome (WS). B. Facial features: micrognathia, short nose, long philtrum, thick lips, and long face and neck typical of WS. C. Initial maximal mouth opening (MMO) of 11 mm. Oligodontia is also notable. D. Intraoperative MMO of 40 mm after release of temporomandibular joint (TMJ) ankylosis. E. Section of patient TMJ stained with H&E showing typical mixed bony and fibrous tissue of TMJ ankylosis.

J Korean Assoc Oral Maxillofac Surg 2022;48:178~181
https://doi.org/10.5125/jkaoms.2022.48.3.178

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