Lateral canthal choristomas associated with colobomas of lateral canthus

We present 3 cases of dermolipoma at the lateral canthus associated with isolated lateral cleft. The dermolipomas ’ appearance ranges from a flat lesion to a large pedunculated tumor, obliterating the lateral conjunctival fornix. A partial removal of the dermolipoma was done with canthoplasty to close the lateral coloboma. Surgical management of dermolipoma with partial excision aimed at reducing visible tumo r produced good cosmetic results, without complications. Microscopic examination of the tumor revealed a mass covered by stratified squamous keratinized epithelium. The mass comprised largely of mature adipose tissue interspersed with bundles of collagen. The presence of pilosebaceous units was also noted. Based on these features, a histopathological diagnosis of a dermolipoma was made. The association between dermolipoma and isolated lateral canthal cleft is much less common than the associations with other distinguishing abnormalities. In summary, these cases illustrate that dermolipomas are also a part of a wide spectrum that characterizes benign growths of the eyelids.Level of evidence: Level V, therapeutic study.

Source: European Journal of Plastic Surgery - July 12, 2020 Category: Cosmetic Surgery Source Type: research