This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET Jan 2020, Subject name: Surgery
Elderly man with long-standing mole over the face which is increasing in size and showing irregular border. Diagnosis: 
Select and explain. 
A. Superficial spreading melanoma, B. Lentigo maligna, C. Acral melanoma, D. Nodular melanoma
B: Lentigo maligna
Answer: B: Lentigo maligna 
Explanation: Lentigo maligna- occur on face sun exposed areas of older individuals,long standing cases,manifests as a flat,dark,variably pigmented lesion,with irregular borders and a history of slow development,best prognosis Superficial spreading melanoma- m/c type , m/c site torso/trunk Nodular- most malignant,veical growth phase + Acral melanoma-least common ,m/c site great toe nail