This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Surgery
Lady with recent delivery engorged shiny mass on breast under nipple fever - 
Select and explain. 
A. Breast abscess, B. Fibroadenosis, C. Sebaceous cyst, D. Fibroadenoma
A: Breast abscess
Answer: A: Breast abscess 
Explanation: Ans. is 'a' i.e., Breast abscess * Features favouring breast abscess:# Lactating woman# Tender swelling# Pyreia# Tense shiny overlying skin* Diagnosis- Ultrasound would be the most useful investigation to diagnose the condition and in delineating the required extent of the drainage procedure.