Thymomas are among the most common anterior mediastinal tumors that can uncommonly present with respiratory failure. This case – A 62 year old lady who presented with complaints of limb weakness and the development of type II respiratory failure, discusses in detail the problem posed and the workup leading to the diagnosis. Surgery was performed based on the radiological findings. The tumor was completely resected and the diagnosis given as Masoka classification‑Type B2-predominantly cortical thymoma