Primary lymphoma of the conjunctiva

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Primary lymphoma of the conjunctiva

ORPHA:319667Disease

Also called Primary lymphoid conjunctival tumor

What it is

Primary lymphoma of the conjunctiva is an extremely rare clonal lymphoid proliferation of the ocular surface, with an indolent course. Clinically it presents with treatment-resistant conjunctivitis, ptosis, excessive tear production or as a painless, salmon-pink, ''fleshy'' patch, with a smooth or multinodular surface, on the bulbar conjunctiva. Histologically it is usually B-cell Non-Hodgkin lymphoma (most often extranodal marginal zone B-cell lymphoma, followed by follicular and diffuse large B-cell lymphoma), with conjunctival T-cell Non-Hodgkin lymphoma being very rare.

Key facts

Classified as
Disease

ICD-10 codes

C85.7filed under a broader ICD-10 category — shared with 7 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Cross-references

MONDO 0017907UMLS C4706485

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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