Localized Orbital Amyloidosis Involving the Lacrimal Sac and Nasolacrimal Duct

The localized form of amyloidosis is rare, typically involves the head and neck without systemic manifestations, and carries an excellent prognosis. Previous reports of orbital amyloidosis have described involvement of the lacrimal gland, extraocular muscles, and the cranial nerves. To our knowledge, this is the first report of a patient with nasolacrimal duct obstruction secondary to amyloid deposition in the lacrimal sac and fossa.