Pre- and postradiotherapy haemoglobin levels of the patient in Case 2. The patient became symptomatic from an occult bleeding caused by a duodenal metastasis of cutaneous melanoma and required continuous transfusion. Palliative radiotherapy of 20 Gy/5 fractions was delivered to control the bleeding. Haemoglobin response to radiotherapy can be appreciated in this graph. (UGI = upper gastrointestinal).