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Dermatology Home DERMATOLOGY
RECONSTRUCTION OF THE LOWER EYELID IN CATS WITH SQUAMOUS CELL CARCINOMA
Squamous cell carcinoma of the eyelids are not too rare in cats with non-pigmented eyelids. Whereas similar regions on the ear flaps can be treated with radical surgery or on the nasal planum can be treated with radiotherapy, the eyelid is a very special area. This novel technique for blepharoplasty allows to cover a tissue defect involving >/=50% of the lower eyelid - and sounds very promising.

The objective of this prospective clinical study was to describe a novel technique for blepharoplasty to cover a tissue defect involving >/=50% of the lower eyelid. Five cats with lower eyelid squamous cell carcinoma (SCC) were included.

En bloc resection of SCC by removing >/=50% of the lower lid with either the medial or lateral canthus was performed without other adjunctive treatment for SCC.

The lid defect was reconstructed with a transposition skin flap derived from the frontal (medial defect) or temporal (lateral defect) region.

The third eyelid was advanced laterally without dissection from its insertion; its outer conjunctival layer was removed, and the skin flap was sutured with single interrupted sutures dorsally over the nictitating membrane, ventrally to the cutaneous edge of the surgical wound and medially or laterally (depending on the canthus removed) to the skin of the remaining lower lid.

RESULTS: Satisfactory cosmetic and functional results were achieved and the Schirmer tear tests were normal. In 2 cats, the skin flap needed monthly hair trimming to avoid corneal lesions.

CONCLUSIONS: After en bloc resection of SCC involving >/=50% of the lower eyelid, reconstruction can be achieved by relocation of the third eyelid and use of a cutaneous transposition flap sutured to the scarified external surface of the third eyelid. Eyelid apposition and lacrimal function were preserved.

Thus, bepharoplasty using a cutaneous transposition flap sutured to the scarified surface of a relocated third eyelid should be considered for reconstruction of lower eyelid defects with >/=50% tissue loss of the lid margin.



Source: Schmidt K, Bertani C, Martano M, Morello E, Buracco P. (2005): Reconstruction of the lower eyelid by third eyelid lateral advancement and local transposition cutaneous flap after `en bloc` resection of squamous cell carcinoma in 5 cats. In: Vet Surg. 2005 Jan-Feb;34(1):78-82.



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