What shape is preferred for the incision when excising an eyelid mass?

The preferred incision shape when excising an eyelid mass is house-shaped. This design offers several advantages for eyelid surgery. The house shape allows for a more precise removal of the mass while preserving the surrounding eyelid tissue, which is essential for maintaining the functional and aesthetic integrity of the eyelid.

Additionally, the house shape incorporates a horizontal lid margin and vertical facial skin incisions that follow the natural contours. This design aligns well with the natural anatomy of the eyelid, promoting better healing and minimizing scarring. It also provides sufficient access for complete excision of the mass, while allowing for straightforward closure that helps ensure the eyelid can function properly after the surgery.

In contrast, other shapes like round or triangle may not allow for optimal alignment with eyelid architecture or may compromise the eyelid's functionality and aesthetics. The square shape might lead to excessive tension on the wound edges and improper healing. Thus, the house-shaped incision is specifically tailored to the unique requirements of eyelid surgery, making it the preferred choice.