结膜黑色素瘤是一种罕见且恶性的眼表肿瘤，具有转移和死亡的倾向。尽管前景黯淡，但由于疾病罕见，预测不良预后的因素正在逐渐被发现。在这里，我们呈现了一个罕见而令人惊讶的病例，即长期存在、广泛浸润的结膜黑色素瘤，尽管存在多种预测不良预后的因素，但没有全身性的转移性疾病。我们希望通过深入审查可能解释我们患者罕见病情发展的各种因素，为我们对结膜黑色素瘤的日益增长的认识做出贡献。©2023PublishedbyElsevierInc.

Conjunctival melanoma is an uncommon and malignant tumor of the ocular surface with the propensity for metastasis and death. Despite the grim outlook, the factors predicting poor prognosis are slowly being uncovered given the rarity of the disease. Here, we present a rare and surprising case of a long standing, extensive, and invasive conjunctival melanoma that, despite multiple factors predicting a poor prognosis, had no systemic metastatic disease. We hope that by reviewing in depth the various factors that may explain our patient's unusual course of illness we can add to our growing understanding of conjunctival melanoma.©2023PublishedbyElsevierInc.