Accelerated development of conjunctival melanoma during pregnancy may be simply coincidence. This has been postulated for cutaneous melanoma, although most studies suggest a genuine increased risk. 4 The 2 main postulated theories for this increased risk are hormonal factors and decreased immunity. Several investigators have examined the role of sex hormone receptor status in conjunctival melanoma, PAM, and nevi. 3,5,6 Chowers et al 5 investigated 2 cases of conjunctival melanoma and 13 cases of PAM and were unable to detect estrogen receptors in any. Paridaens et al 3 found that 6 of 15 conjunctival melanomas were estrogen receptor positive. More recently, Pache et al 6 found expression of progesterone receptors in 96% of cases, consisting of 69 nevi, 5 cases of PAM, and 2 melanomas. Staining for estrogen and progesterone receptors was negative in this patient. Changes in immunity that accompany pregnancy may also play an important role. To protect the fetus from rejection, pregnancy induces immunosuppression with a predominant T-helper 2 response to inciting stimuli. Indeed, the severity of many diseases has been shown to be affected by pregnancy. This anti-inflammatory response may also affect tumor surveillance and promote tumor growth. This reduction in immune surveillance has been suggested by Paridaens et al, 3 who described a young woman with growth of conjunctival melanosis and melanoma during the course of 3 pregnancies. An additional feature of concern in this patient was that the PAM was nonpigmented in some areas. While PAM sine pigmento is well recognized, often in conjunction with pigmented areas, it can be difficult to follow up. 7 In conclusion, while this link with pregnancy and conjunctival melanoma progression cannot be fully explained, it would be prudent for young women with PAM with atypia to be closely monitored during reproductive life.