The giant pulmonary solitary fibrous tumor is a mesenchymal tumor of rare fibroblastic differentiation, preferably intrathoracic and intraoral. Not associated with specific risk factors. Non-specific clinical presentation and slow growth. The present case is of a 54-year-old patient with dyspnea on medium exertion with the presence of abolished left vesicular murmur. He developed refractory hypoglycemia leading to Doege Potter syndrome. A total occupying mass was evident in the left chest on computed axial tomography. A modified approach was performed by sternotomy plus left thoracotomy to improve exposure and hemodynamic control with access to the tumor’s nutritional vessels and total tumor excision. Histopathology revealed a heavier tumor reported in the medical literature. Microscopy presence of mesenchymal neoplasia composed of spindle-shaped and oval cells and positive immunohistochemistry of giant solitary pulmonary fibroma.