This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pathology
Koenen&;s tumour is seen in 
Select and explain. 
A. Tuberous sclerosis, B. Neurofibramatosis, C. VHL syndrome, D. Turcot syndrome
A: Tuberous sclerosis
Answer: A: Tuberous sclerosis 
Explanation: Tuberous sclerosis is a rare disease that causes tumors, or growths, in the brain and other organs. These growths can occur in the skin, kidneys, eyes, hea, or lungs. They are usually benign (non-cancerous). The first signs of tuberous sclerosismay occur at bih.