Complex choristoma masquerading as a dacryocystocele.

Comment. Deficiency of MBL has been correlated with a variety of infections in otherwise healthy individuals but may also enhance susceptibility to certain infections in persons receiving chemotherapy or those with secondary immunosuppression for other reasons. Genetic polymorphism explains the range of serum concentrations of MBL found in the general population, with severe serum MBL deficiency associated with homozygosity of yet unnamed minority alleles. We are unaware of any previous reports of recalcitrant Candida endophthalmitis associated with MBL deficiency in an otherwise healthy individual. Mannose-binding lectin replacement therapy using plasma-derived or recombinant lectin is under investigation but is not currently available for clinical use.