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Doege-Potter syndrome is a rare paraneoplastic syndrome, in which a solitary fibrotic tumour secretes insulin-like growth factor II leading to hypoglycaemia. In this case report, a 70-year-old woman known with a big intra-abdominal tumour was admitted to hospital, unconscious with a blood sugar of 1.8 mmol/l. She was treated with intravenous glucose until surgery, which cured her temporarily. After four months she had relapse and no effect of chemotherapy. Surgery is the only curative treatment for Doege-Potter syndrome, which is important to remember, if a patient has unexplained hypoglycaemia and a tumour.

In this case report a 73-year-old male with liver-metastatic colon cancer was admitted to hospital due to severe abdominal pain merely four days after receiving chemotherapy including epidermal growth factor receptor inhibitors. An acute computed tomography revealed gas-filled liver metastases with two possible diagnoses of either a rapid tumour response resulting in tumour necrosis or severe bacterial infection involving liver metastases. Moreover, the patient had an anaerobic infection with Clostridium septicum, and despite relevant treatment he died within 12 hours after admission.