Uveal melanoma of choroid and ciliary body

pT1 <10mm basal diameter, <2.5mm apical height a. without extraocular extension b. with microscopic extraocular extension c. with macroscopic extraocular extension pT2 >10 to 16 mm basal diameter, >2.5 to 10 mm apical height a. without extraocular extension b. with microscopic extraocular extension c. with macroscopic extraocular extension pT3 >16 mm basal diameter and/or >10 mm apical height without extraocular extension pT4 >16mm basal diameter and/or >10mm apical height with extra-ocular extension.

When basal diameter and apical height show a difference in classification, use the highest category. Extraocular extension is diagnosed if the tumour grows outside the bulb with invasion of the orbit (commonest), optic nerve, outer eye muscles, lacrimal apparatus or conjunctiva.

Figure 37.1. Malignant melanoma of choroid. |W

Figure 37.1. Malignant melanoma of choroid. |W

pT"

Figure 37.2. Malignant melanoma of choroid. |W

pT"

b Elevation > 10 mm

Figure 37.2. Malignant melanoma of choroid. |W

Figure 37.3. Malignant melanoma of choroid. |W
Figure 37.4. Malignant melanoma of choroid. |W

There is a tendency for spread along the optic nerve with metastases to liver, lung, bone and skin.

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