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Surgical excision of iridociliary tumors using a postero‐anterior cyclo‐iridectomy and thermocautery in two dogs
Author(s) -
Davis Rachel L.,
Reilly Christopher M.,
Moore Phillip A.
Publication year - 2020
Publication title -
veterinary ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.594
H-Index - 50
eISSN - 1463-5224
pISSN - 1463-5216
DOI - 10.1111/vop.12755
Subject(s) - medicine , iridectomy , hyphema , melanocytoma , surgery , iris (biosensor) , glaucoma , ciliary body , histopathology , ophthalmology , intraocular pressure , pathology , melanoma , computer security , cancer research , computer science , biometrics
Objective To report the surgical excision of an iridociliary adenoma and iridal melanocytoma using a postero‐anterior cyclo‐iridectomy in two dogs. Procedure A 7 year old neutered male English springer spaniel (case 1) and a 7 year old neutered male Labrador mix (case 2) were presented for evaluation of an intrairidal mass OS. Results Complete ophthalmic examination revealed a large, dorsonasal, well‐demarcated, intrairidal mass OS. A tan to pink intrairidal mass extending into the iridocorneal angle (case 1) and a pigmented intrairidal mass (case 2) were present. B‐mode ultrasonography showed a focal, soft tissue, homogenous mass within the uvea adjacent to and contacting the lens. Neither pars plana involvement nor vitreal extension was present. A postero‐anterior cyclo‐iridectomy was performed through a polyhedral scleral flap. Thermocautery was used to complete the cyclo‐iridectomy (case 1) and partial iridectomy (case 2) to excise the mass en bloc. Histopathology revealed a completely excised iridociliary adenoma (case 1) and iris melanocytoma (case 2). The surgery sites healed without complication. Mild uveitis (cases 1 and 2), scant vitreal hemorrhage (case 1), and mild hyphema (case 2) were present three days postoperatively but had resolved ten days postoperatively. The patients remain visual twenty‐two months (case 1) and seven months (case 2) postoperatively with a normal intraocular examination other than an iridal defect and mild dorsonasal lens capsular opacities. Conclusions The surgical approach described in these cases is utilized in physician‐based medicine. This approach and the use of thermocautery provide a viable surgical option for excision of large iridociliary tumors in dogs.