Recurrent Salzmann's nodular degeneration: report of two cases and review of literature.

Recurrence of Salzmann's nodular degeneration following corneal transplantation is uncommon. The earlier reports of recurrence of Salzmann's degeneration were based on clinical evidence. We report two histopathologically proven cases of recurrence of Salzmann's nodular degeneration following keratoplasty; one recurring after lamellar keratoplasty and the other following penetrating keratoplasty. Two male patients (40 yrs and 24 yrs) presented to us with a clinical picture of Salzmann's nodular degeneration. One patient had undergone lamellar keratoplasty in both eyes for Salzmann's degeneration, 22 years ago. A repeat lamellar keratoplasty was performed in the right eye (7.5 mm/8 mm). In the other patient, penetrating keratoplasty was performed in the left eye, 6 years ago for the same. Lamellar keratoplasty was performed in the left eye (8 mm/8 mm). The histopathologic evaluation of the host button in both the cases, showed features very much suggestive of a recurrence of Salzmann's nodular degeneration.