A 68-year-old male presen...

A 68-year-old male presents with an 8-week history of cough with intermittent blood-tinged sputum. He denies having fevers or any known contact with TB. However, he has a history of nearly 7-9 kg weight loss in the last 3 months and reports feeling more fatigued. He has a 40-pack-year smoking history and worked as a welder for 30 years. His medical history only includes hypertension, for which he is on medication. Breath sounds are equal without any adventitious sounds, and the cardiac exam reveals a regular rate and rhythm. His blood pressure is 120/80 mmHg, and his heart rate is 88/min. An initial chest x-ray reveals a mass in the right hilar region measuring 3.1 cm × 3.5 cm. What should be the immediate management before referring to the oncologist?