Inclusion Criteria:

1. 5 years or longer from initial Hodgkin's disease diagnosis

2. Current age 18 or older

3. Received mediastinal irradiation and/or alkylating-agent based chemotherapy

4. Smoking history of 10-pack years or more, or current smoker

Exclusion Criteria:

1. Patients with a history of lung cancer

2. Patients currently receiving treatment for another cancer diagnosis (patients with
another cancer, but currently disease-free and not receiving treatment are eligible)

3. Patients with known diagnosis of any metastatic cancer

4. Pregnant women. Female patients must: be at least one year post-menopausal, have had
a hysterectomy, or have a serum pregnancy test to confirm that they are not pregnant.
These measures must be taken in order to avoid doing a CT scan of a pregnant woman.