malignant transformation in this patient. Though there was no evidence suggestive of lupus vulgaris, Bowen disease, actinic keratosis or any other premalignant condition, malignant transformation of any premalignant skin lesion cannot be ruled out because the patient presented very late and biopsy was not done earlier. There are many case reports of squamous cell carcinoma, but the author was unable to find any previous reports of similar presentation of such giant cutaneous squamous cell carcinoma.Cutaneous squamous cell carcinoma is a malignant tumour arising from keratinocytes of the epidermis. Squamous cell carcinoma may arise de novo or may arise on pre-existing skin lesions such as lupus vulgaris, lupus erythematosus, lichen planus, porokeratosis of Mibelli, psoriasis, epidermolysis bullosa, epithelial nevus, granuloma inguinale, chromoblastomycosis, acne conglobata, hidradenitis suppurativa, lichen sclerosus et atrophicus, nevus sebaceous, scar tissue, sinuses and fistulae. 2 Squamous cell carcinoma is the most frequent histological type of neoplasm identified in scars and wounds. 3 Dermatologists should be aware of this kind of atypical presentation of squamous cell carcinoma. Squamous cell carcinoma is often asymptomatic and hence patients often present very late. Unlike basal cell carcinoma, cutaneous squamous cell carcinoma is associated with a substantial risk of metastasis. Therefore, non-healing lesions should be viewed with great suspicion and a biopsy should be performed to rule out malignant transformation. A high index of suspicion and early histological diagnosis help in preventing complications.