This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin, Subject name: Medicine
Which of the following best describes mycosis fungoides? 
Select and explain. 
A. fungal infection of the epidermis, B. benign skin lesion, C. cutaneous lymphoma, D. dermatitis
C: cutaneous lymphoma
Answer: C: cutaneous lymphoma 
Explanation: Mycosis fungoides is best described as a cutaneous T-cell lymphoma. Lesions may remain confined to the skin for years, and internal organ involvement occurs when the disease advances into late stages. It is a disorder involving T lymphocytes. Treatment is usually palliative rather than curative.