<prompt> Most common tumour of eyelid isBasal cell carcinomaAdenocarcinomaSquamous cell carcinomaSebaceous cell carcinoma  <response>: A Basal cell carcinoma 430-Nema 5th 457- Parson 21st Basal cell carcinoma is the most common maligment tumour of the eyelids and constitutes 85-90 of the all malignant epithelial eyelid tumours. Squamous papilloma is the most common benign tumour of the eyelid.Common malignant tumours of the eyelidTypeCommon locationClinical featuresSpreadTherapyBasal cell carcinomaMedial canthus, lower lidNodule, central ulceration with pearly surface telangiectasiaLocalResection RadiationSquamous cell carcinomaLower lid. From previous actinic keratosisUlcer with thickened margins, keratosis papillomatousLocal, lymph nodesResection,RadiationCryotherapySebacious cell carcinomaUpper lidNodular resembling, chalazion multifocal F M recurrence commonLocal intraepith elial lymph nodesResectionCryotheropyExenterationMalignant melanomaPrevious nevi 6mm size pigmented lesion. Vascularization inflammationLocal vascular lymph nodesResectionExenterationThe moct common benign orbital tumour is adults Cavernous HemangiomaMost common malignant orbital tumour in adults is LymphomaMost common benign orbital tumour in children is Dermoid cystMost common malignant orbital tumour in children is RhabdomyosarcomaBASAL CELL CARCINOMA Also ka Rodent ulcer It is more common in Caucasians 99 Age is 40-79 years Ultravoilet light exposure is one of the most important risk factors It is locally malignant It involves most commonly lower eyelid 50-60 medial canthus 25-30 upper eyelid 15-20 lateral canthus Basal cell nevus syndrome Gorlin- Goltz syndrome is a rare syndrome occurring in 