This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S., Subject name: Medicine
Shagreen patch is a cha racteristic feature of - 
Select and explain. 
A. Tuberous sclerosis, B. Neurofibromatosis, C. Sturge weber syndrome, D. Von Hippei-Lindau syndrome
A: Tuberous sclerosis
Answer: A: Tuberous sclerosis 
Explanation: Ans. is 'a' i.e., Tuberous Sclerosiso Shagreen Patch (connective tissue naevi) are roughened raised leathery lesions with an orange peel consistency that are typically seen in patients with Tuberous Sclerosis.