It is a great challenge to repair a medial canthus
and restore the function of lacrimal drainage system.
Wesley, "Reconstruction of upper eyelid and medial canthus
," in Oculoplastic Surgery, C.
The results showed that: there was no statistically significant difference in the distance from LSC (top, bottom) to the skin and medial canthus
between the different sexes; there was no statistically significant difference in the distance from the angular artery to the skin and medial canthus
between the different sexs (Tables II and III).
The superior part of the nasal septum and the interfrontal part of the septum were eroded, and the soft tissue in the area of the right medial canthus
and both laminae papyracea was exposed.
The squamous cell tumors also were found most frequently on the lower eyelid (64 or 61%), followed by the medial canthus
(17%), the upper eyelid (15%), and the lateral canthus (7%).
Clinical examination of both eyes revealed presence of ulcerative lesions around the medial canthus
and puncta lacrimalia (Fig 1).
The most common sites of involvement of periocular BCC are the lower eyelid, the medial canthus
, the upper eyelid and the lateral canthus respectively.2 It is usually a slowly enlarging tumor and symptoms are rare.
In this study the medial canthus
is used as an objective point to reference the pupil point.
A semicurved vertical skin incision was placed approximately 1 cm medial to the medial canthus
extending 10 to 15 mm.
The patient presented with epiphora, nasal obstruction, swelling of the left medial canthus
, and drainage of a foul-smelling fluid from the left nostril.
Among the patients, 73 (32.9%) had the involvement of the lower lid; 57 (25.7%) the upper lid; 18 (8.11%) the medial canthus
; 2 (0.9%) the lateral canthus; and 72 (32.4%) had more than one region involved.
A swelling in the medial canthus
may point to a swollen lacrimal sac full of mucus (a mucocele--Figure 2) or mucus mixed with purulent material (mucopyocele), which may cause epiphora.