MRCP2-4049
A 35 year old male presents with sudden onset, sharp, right sided chest pain and a 5 month history of increasing leg swelling, weight gain and abdominal distension. He has no past medical history of note. On examination he is tachycardic at 105/min with otherwise normal observations. Cardiovascular and respiratory examinations are normal; there is shifting dullness on examination of the abdomen with no masses palpable. There is also bilateral pitting oedema to the groins. Electrocardiogram shows sinus tachycardia. Urine dip shows 3+ protein nil else. Chest X-ray is unremarkable. Blood tests show the following:
Hb 137 g/l Na+ 141 mmol/l Bilirubin 12 µmol/l
Platelets 275 * 109/l K+ 4.4 mmol/l ALP 89 u/l
WBC 9.2 * 109/l Urea 4.3 mmol/l ALT 33 u/l
Neuts 7.3 * 109/l Creatinine 86 µmol/l γGT 47 u/l
Lymphs 1.4 * 109/l Albumin 20 g/l
What is the most likely cause of his chest pain?