Enterococci are one of the usual residents of the microflora in humans. In the last decade this genus has been reported as the third most common cause of bacteremia. We present the case of a 78-year-old female who was admitted to the emergency room because of nausea, lipothymia, and weakness. She was diagnosed with a pyelonephritis with bacteremia, with the isolation in blood and urine cultures of Escherichia coli and Enterococcus hirae. This last microorganism is a rarely isolated pathogen in humans. Currently it is estimated to represent 1–3% of all enterococcal species isolated in clinical practice.

Malignant pericardial effusion is common, being reported in 5–15% of all cancer patients. It most commonly arises from metastasis of lymphomas and of tumours of the lung, breast and, infrequently, the gastrointestinal tract. We describe the case of a 76-year-old woman who presented to the emergency room with cervical adenopathies and clinical signs of acute heart failure. The nodes were biopsied and found to be consistent with adenocarcinoma of the colon. CT showed thoracic lymphatic involvement but no evidence of other organ involvement. The patient developed cardiac tamponade and required emergent pericardiocentesis. To our knowledge, this is the first report of metastatic colon cancer without direct involvement of the pericardium or other solid organs.

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