This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Surgery
Inflammatory carcinoma is classified under 
Select and explain. 
A. T4a, B. T4b, C. T4c, D. T4d
D: T4d
Answer: D: T4d 
Explanation: T1<= 2cm T2>2 cm but <= 5cmT3> 5cmT4aExtension to the chest wall (invasion of pectoralis only is not extension to the chest wall)T4bSkin involvement (including peau d'orange) that doesn&;t meet criteria of skin involvementT4cBoth T4a and T4b are presentT4dInflammatory carcinomaRef: AJCC 8th edition