Inclusion Criteria:

- 18 years or older

- Patients with histologically proven SCLC (all histological subtypes), treated with
concurrent chemo- and radiotherapy.

- Ability to understand the protocol and willing to provide written informed consent

Exclusion Criteria:

- Concurrent participation in a clinical trial in which the subject is taking or
receiving any investigational agent that may affect the frequency, severity or
duration of mucositis.

- Pre-existent esophagitis.

- Receiving investigational treatment for the prevention or treatment of mucositis.

- Prior irradiation to the lung or head and neck region.