<prompt> 40 year female presents to surgical OPD with C O breast heaviness Oe following finding is seen. What is the T stage of this malignancy?T3T4aT4bT4c  <response>: The video depicts extension of tumor to chest wall . T4a Extension to chest wall chest wall is formed by Ribs, Intercostal muscles, Serratus Anterior T4b Ulceration , edema including Peau-D-Orange , Satellite nodules T4c T4a T4b T4d Inflammatory breast cancer Not included in T4 Involvement of dermis alone Nipple retraction detion Involvement of Pectoralis major Pectoralis minor 