Abstract

Orbital vascular lesions are challenging to treat and observation is often preferred if symptoms are mild. Historically, surgical excision of the lesions used to be the preferred treatment, but intraoperative bleeding and incomplete removal were common. Therefore, sclerotherapy has become the treatment of choice by virtue of being minimally invasive and extremely effective. Sclerotherapy involves multiple intralesional injections of sclerosing agents like bleomycin and sodium tetradecyl sulfate. In this communication, we describe an unusual complication associated with sclerotherapy to treat an orbital venous malformation in a young woman diagnosed with a type-2 low flow venous malformation (orbital varices) in her left orbit. There was complete resolution of the lesion. However, following the procedure, she complained of diplopia accompanied by left hypotropia. The condition persisted six months after the procedure. Forced duction test confirmed a tight inferior rectus and she refused any further intervention. This case report discusses the possible mechanisms of this rare and unusual complication associated with sclerotherapy while treating orbital vascular lesions.

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