The Contribution of Inflammatory Cell Infiltration to Conjunctival Inclusion Cyst Formation.

Purpose: The incidence of inclusion cysts was examined histopathologically in conjunctival disorders where inflammatory cell infiltration was seen in the subepithelial connective tissue.Method: The incidence of inclusion cysts was examined histopathologically in pterygium, vernal conjunctivitis, pyogenic granuloma and pingueculitis. The specimens of pinguecula were used as control.

Results

Inclusion cysts were recognized in 5/(55) cases of pterygium, 2/(12) cases of vernal conjunctivitis, 1/(4) cases of pyogenic granuloma, and 1/(2) cases of pingueculitis. On the other hand no inclusion cyst was recognized in 20 cases of pinguecula in which no inflammatory cell infiltration was seen.

Conclusions

Inflammatory cell infiltration may contribute to the formation of conjunctival inclusion cysts in pterygium, pingueculitis, vernal conjunctivitis and pyogenic granuloma.