Differential Diagnosis for Bumps on Lower Eyelid

Primary Differential Diagnosis

The American Academy of Ophthalmology recommends considering sebaceous carcinoma in the differential diagnosis for chronic, unresponsive, or atypical lesions on the lower eyelid, which may present with a hard, non-mobile tarsal mass, yellowish discoloration, and chronic unilateral blepharoconjunctivitis unresponsive to treatment 1
The American Academy of Ophthalmology suggests that basal cell carcinoma, the most common eyelid malignancy, can be misdiagnosed clinically as benign lesions, including papilloma, cyst, or nevus, and may require biopsy for definitive diagnosis 1
Squamous cell carcinoma and ocular surface squamous neoplasia can present with papillomatous or sessile nodules, may appear leukoplakic, and are associated with HPV and UV exposure, according to the American Academy of Ophthalmology 1
Melanoma can present as a painless, flat or nodular, brown or fleshy-pink lesion that enlarges over time, and the American Academy of Ophthalmology recommends considering this diagnosis in the evaluation of eyelid lesions 1, 3
Conjunctival lymphoma can present as a painless, pink "salmon patch" lesion with indolent fleshy swelling, and the American Academy of Ophthalmology suggests that this diagnosis should be considered in the evaluation of eyelid lesions 1

Molluscum contagiosum can cause shiny, dome-shaped umbilicated lesions on the eyelid skin or margin, leading to follicular conjunctivitis, and the American Academy of Ophthalmology recommends excision or curettage of these lesions 3
Herpes simplex virus and varicella zoster virus can cause vesicular eyelid lesions, and the American Academy of Ophthalmology suggests treating these infections with systemic antivirals such as acyclovir or valacyclovir 3, 4

The American Academy of Ophthalmology recommends that gradual enlargement of a lesion over weeks to months, central ulceration or induration, irregular borders, eyelid margin destruction or loss of lashes, and telangiectasia be considered red flags for malignancy, and that biopsy be performed in these cases 2
Chronic unilateral presentation unresponsive to standard therapy, and recurrent "chalazion" in the same location, should raise suspicion for malignancy and prompt biopsy, according to the American Academy of Ophthalmology 1, 2
The American Academy of Ophthalmology suggests that marked asymmetry or unifocal recurrence of a lesion demands biopsy, as these features significantly increase the risk of malignancy 2

The American Academy of Ophthalmology recommends that presumed benign lesions, such as chalazion or hordeolum, be managed initially with warm compresses, lid hygiene, and observation for 4-6 weeks, and that biopsy be performed if the lesion persists or recurs 2
For suspected malignancy, the American Academy of Ophthalmology recommends immediate biopsy, with consultation to a pathologist regarding the need for frozen sections and mapping for pagetoid spread, and that fresh tissue may be required for special stains such as oil red-O for lipid detection in sebaceous carcinoma 2