eMedicine Specialties > Ophthalmology > Lid
Squamous Cell Carcinoma, Eyelid: Differential Diagnoses & Workup
Updated: Feb 5, 2009
- Overview
- Differential Diagnoses & Workup
- Treatment & Medication
- Follow-up
- Multimedia
Differential Diagnoses
| Basal Cell Carcinoma, Eyelid | Dermatitis, Contact |
| Blepharitis, Adult | Hordeolum |
| Chalazion | Squamous Cell Carcinoma, Conjunctival |
| Dermatitis, Atopic | Xanthelasma |
Other Problems to Be Considered
Actinic keratosis
Eyelid malignant melanoma
Eyelid sebaceous cell carcinoma
Workup
Laboratory Studies
- Liver function tests, if metastasis is suspected
- Genetic analysis for xeroderma pigmentosum, if patient is young and there is no history of occupational exposure or excessive sun exposure
- HIV test, if patient is young and there is no history of occupational exposure or excessive sun exposure, and xeroderma pigmentosum has been excluded
Imaging Studies
- CT scan
- To evaluate depth of extension into orbit and bony erosions
- Liver scans or full body CT scan, if metastasis is suspected
Other Tests
- Photography - To document appearance of lesion
External photograph of a large ulcerated invasive squamous cell carcinoma of the left lower eyelid. This patient also had perineural invasion of the infraorbital nerve extending into the cranial base.
Procedures
- Incisional biopsy for histological diagnosis
Histologic Findings
Squamous cell carcinoma may arise de novo or from premalignant lesions such as actinic keratosis or intraepidermal carcinoma (carcinoma in situ). Intraepidermal squamous cell carcinoma is characterized by full-thickness epidermal atypia (cellular atypia, loss of polarity, pleomorphic and/or hyperchromatic nuclei, mitotic figures, and parakeratosis).6
Invasive squamous cell carcinoma is present when cellular atypia penetrates through the epidermal basement membrane.
In well-differentiated squamous cell carcinoma, cells are polygonal with abundant cytoplasm. Dyskeratotic cells with keratin pearls are present. Nuclei are prominent, hyperchromatic, and pleomorphic. Mitotic figures are commonly present; loss of polarity of normal epidermal architecture can be seen. Poorly differentiated lesions may show little or no evidence of keratinization.6
More on Squamous Cell Carcinoma, Eyelid |
| Overview: Squamous Cell Carcinoma, Eyelid |
Differential Diagnoses & Workup: Squamous Cell Carcinoma, Eyelid |
| Treatment & Medication: Squamous Cell Carcinoma, Eyelid |
| Follow-up: Squamous Cell Carcinoma, Eyelid |
| Multimedia: Squamous Cell Carcinoma, Eyelid |
| References |
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References
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Further Reading
Keywords
eyelid squamous cell carcinoma, eyelid skin cancer, eyelid malignancy, eyelid neoplasm, SCC, facial skin cancer, skin carcinoma, adenoacanthoma, adenoid squamous cell carcinoma, invasive squamous cell carcinoma, malignant squamous cell carcinoma, pseudoglandular squamous cell carcinoma, actinic keratosis, xeroderma pigmentosum, eyelid radiation therapy


Differential Diagnoses & Workup: Squamous Cell Carcinoma, Eyelid