Melanocytoma of the ciliary body misdiagnosed as iridodialysis

Abstract

A 62-year-old female presented to our institution with dimness of vision in her right eye. On examination, her best corrected visual acuity was 20/100 in the right eye. The intraocular pressures were 14 mmHg in both eyes. Slit-lamp examination revealed nuclear sclerotic cataracts bilaterally and iridodialysis in her right eye. Seven days after the first visit, cataract surgery was performed without any complications. One year later, she presented to our institution with acute visual loss and ocular pain in the right eye. Best corrected visual acuity of the right eye was light perception and the intraocular pressure was 44 mmHg. Slit-lamp examination revealed a ciliary body mass with widespread pigment dispersion in the anterior segment. Due to no useful vision and uncontrolled pain, enucleation of the right eye was performed. Histopathologic examination revealed a melanocytoma of the ciliary body.

Keywords: ciliary body; iridodialysis; melanocytoma.

Figure 1

Views of cataract surgery. Notes: Before surgery (A) and after phacoemulsification (B). The arrow indicates iridodialysis.

Figure 2

Anterior segment photograph and ultrasonographic findings. Notes: Pigment dispersion in anterior chamber (A) and ciliary body mass (B).

Figure 3

Light microscopy views. Notes: (A) A pigmented mass in the ciliary body (40×), (B) involvement of trabecular meshwork by the tumor cells (100×), and (C) round to oval bland cytologic features of tumor cells (400×). They show prominent nucleoli (arrows) and marked cytoplasmic melanin pigments.