This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors, Subject name: Pathology
Based on the characteristic cytological findings on PAP smear examination in a 26-year-old female presented for screening. What's your diagnosis? 
Select and explain. 
A. LSIL, B. HSIL, C. Squamous cell carcinoma, D. Adenocarcinoma
A: LSIL
Answer: A: LSIL 
Explanation: The diagnosis of LSIL is based on the identification of nuclear atypia characterized by nuclear enlargement, hyperchromasia (dark staining), coarse chromatin granules, and variation in nuclear size and shape. Nuclear alterations with an associated perinuclear halo are termed pilocytic atypia.