This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Surgery
Neurofibromatosis is associated with - 
Select and explain. 
A. Papillary Ca, B. Islet cell tumour, C. Pheochromytoma, D. Glucagonoma
C: Pheochromytoma
Answer: C: Pheochromytoma 
Explanation: Following neoplasms are associated with Type I (Von Recklinghausen ds.) NeurofibromaS (including plexiform neurofibromas) Pheochromocytoma Optic gliomas Ependymomas Meningiomas Astrocytomas Type II Bilateral vestibular schwannomas Schwannoma of other cranial and spinal nerves Meningioma Gliomas Schwannomas Ref : Harrison 17/e p2607