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Abstract #21050 Published in IGR 10-2
Ring melanoma of the ciliary body: Clinical and ultrasound biomicroscopic characteristics
Vasquez LM; Pavlin CJ; McGowan H; Simpson ERCanadian Journal of Ophthalmology 2008; 43: 229-233
BACKGROUND: Diagnosis of ring melanoma is clinically difficult since the mass can remain hidden with standard slit-lamp biomicroscopy. The aim of this study was to evaluate the utility of ultrasound biomicroscopy (UBM) as a diagnostic tool for ring melanoma of the ciliary body. METHODS: This was a retrospective study of 6 eyes of 6 patients at Princess Margaret Hospital, Toronto, Ontario, with a diagnosis of ring melanoma of the ciliary body. The tumor extension was measured clinically, gonioscopically, ultrasonographically (by UBM), and pathologically. RESULTS: Since 2000, 6 cases of ring melanoma have been diagnosed at Princess Margaret Hospital: 2 women and 4 men, median age 57 years. Five patients presented as uncontrolled hyperchromic glaucoma (83%). Ciliary body involvement on slit-lamp examination ranged from 60° to 180°. Ciliary body involvement as assessed by UBM ranged from 180° to 300°. Tumor extension according to pathological examination ranged from 210° to 360°. With these measures, the ring melanoma clinical criteria were not filled by 5 patients. INTERPRETATION: UBM is an important tool in determining the extent of ciliary body involvement and classifying these lesions.
Dr. L.M. Vasquez, Ocular Oncology Service, 18-740, Princess Margaret Hospital, 610 University Ave., Toronto, ON M5G 2M9, Canada. lumav@hotmail.com
Classification:
9.4.3.5 Other (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders > 9.4.3 Glaucomas associated with disorders of the iris and ciliary body)
6.12 Ultrasonography and ultrasound biomicroscopy (Part of: 6 Clinical examination methods)
9.4.8 Glaucomas associated with intraocular tumors (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders)
