This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
A characteristic pathological feature of Parkinson's disease is presence of - 
Select and explain. 
A. Lewy bodies, B. Babes nodule, C. Neuro fibrillary tangle, D. Negri-bodies
A: Lewy bodies
Answer: A: Lewy bodies 
Explanation: Pathologic Examination in Parkinson shows :

Gross / Macroscopically: Pallor of the substantia nigra and locus coeruleus
Microscopic Examination :    

1. Loss of catecholaminergic neurons in these regions + gliosis
2. Lewy bodies.

Lewy bodies: are inclusion bodies found within neurons in Parkinson's disease.
Lewy bodies are single or multiple, intra-cytoplasmic, eosinophilic, round and elongated inclusions that often have a dense core surrounded by a pale halo.
Ultrastructurally: These are composed of fine filaments, densely packed in the core but loose at the rim.