Pigmented conjunctival squamous cell carcinoma simulating a conjunctival melanoma.
OBJECTIVE
To report a pigmented conjunctival squamous cell carcinoma that clinically simulated a conjunctival melanoma.


METHODS
Interventional case report.


METHODS
Ocular examination, surgical excision, and clinicopathologic correlation.


RESULTS
A 78-year-old white man developed a lightly pigmented mass at the temporal limbus of his right eye. The differential diagnosis included pigmented squamous cell carcinoma and malignant melanoma. Histopathologic examination revealed a malignant squamous cell tumor that contained foci of melanin pigment. The final diagnosis was pigmented conjunctival squamous cell carcinoma.


CONCLUSIONS
Conjunctival squamous cell carcinoma may rarely be pigmented and simulate a conjunctival melanoma.
Shields
J A
JA
Oncology Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA.
Shields
C L
CL
Eagle
R C
RC
Singh
A D
AD
Demirci
H
H
Wolf
M A
MA
D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000601:surgery; D003230:Conjunctival Neoplasms / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008545:Melanoma / Q000175:diagnosis* / Q000601:surgery