Benign Tumors of Conjunctiva

Conjunctival Nevi & Overview - Spotting Benign Spots

Benign conjunctival tumors: Common, usually asymptomatic. Nevi are the most frequent type.

• Conjunctival Nevi: Benign melanocytic hamartomas.

  • Epidemiology: Common, often appear in childhood/adolescence.

  • Types: Junctional (flat), Compound (raised), Subepithelial (deep, less pigment).

  • Clinical Features:

    • Pigmented (variable, may ↑ with hormones) or non-pigmented.
    • Intralesional cysts are pathognomonic.
    • Freely mobile over sclera.
    • Usually located in interpalpebral zone.

  • Malignant Transformation: Low risk (<1%).

    • Watch for: ↑ size, new vascularity, color change, fixation, symptoms. 📌 ABCDE rule applies.

  • Management:

    • Observation with photo-documentation.
    • Excision biopsy if suspicious, cosmetic concerns, or irritation.

⭐ Intralesional cysts are a common and reassuring feature of benign conjunctival nevi.

Conjunctival Papillomas & Granulomas - Warts & Reactive Lumps

Conjunctival Choristomas & Vascular Lesions - Born This Way Bumps

• Choristomas (Congenital: normal tissue, abnormal location):
  • Dermoids:
    • Components: Collagen, hair follicles, sebaceous glands.
    • Location: Typically limbal (epibulbar), inferotemporal.
    • Associations: Goldenhar syndrome (oculoauriculovertebral spectrum).
    • 📌 "Dermoids: 'Derma'-tological bumps at Limbus."
  • Lipodermoids (Dermolipomas):
    • Components: Adipose tissue, collagen; soft, yellowish.
    • Location: Superotemporal fornix, often bilateral.
    • Associations: Goldenhar syndrome.

  ⭐ Limbal dermoids containing hair follicles are a classic presentation and may be associated with Goldenhar syndrome (oculoauriculovertebral spectrum).

• Vascular Anomalies (Congenital/Developmental):
  • Hemangiomas (Benign vascular proliferations):
    • Capillary (strawberry): Bright red; often regress.
    • Cavernous: Deeper, bluish; less regression.
  • Lymphangiomas:
    • Features: Dilated lymphatic channels, multicystic, transilluminate.
    • 'Chocolate cysts': From hemorrhage. May enlarge with URI.

High‑Yield Points - ⚡ Biggest Takeaways

• Nevi: Most common melanocytic tumor; junctional type can become malignant. Monitor for changes.
• Papilloma: Often HPV-related (types 6, 11 commonest); excisional biopsy for diagnosis and treatment.
• Limbal Dermoids: Choristomas (normal tissue, abnormal site); strong association with Goldenhar syndrome.
• Pyogenic Granuloma: Actually lobular capillary hemangioma; rapid growth, bleeds easily, often post-trauma.
• Lymphangioma: Congenital lymphatic malformation; may present with "chocolate cysts" (hemorrhage).
• Capillary Hemangioma: Common in infancy ("strawberry nevus"); usually undergoes spontaneous regression.