[Do we inspecting the patient face who has shoulder pain?].

A Pancoast or superior sulcus tumor is a rare, bronchogenic carcinoma. In the early period, shoulder pain is the most common symptom. In this case, the patient had presented with complaints of shoulder and arm pain at other outpatient clinics and was examined primarily for musculoskeletal causes and radiculopathy. The patient had no complaints of facial symptoms and Horner's syndrome signs, such as anhidrosis of the face and neck region, were not noticed. Advanced imaging of a patient with preganglionic Horner's syndrome is important. Fewer than 50% of patients with a Pancoast tumor have a resectable lesion at the first diagnosis. Diagnosis is often delayed or there may be a misdiagnosis because musculoskeletal disorders are the focus and there are few lung-related complaints. A detailed examination and anamnesis is very important in patients with arm and shoulder pain.