The case of the mysterious vanishing spleen: autosplenectomy complicating pneumococcal sepsis.

A 57-year-old previously healthy fisherman was admitted in fulminant pneumococcal septic shock, with disseminated intravascular coagulation, requiring aggressive management including bilateral below-knee amputations for ischaemic necrosis. He began to recover and was discharged for rehabilitation, however during his convalescence was found to be hypercalcaemic. No malignancy was found on CT scan, but it was noted that his spleen was absent, replaced by a 4 cm smooth-walled, fluid-filled lesion. This was unexpected as an ultrasound in intensive care 10 weeks previously had demonstrated a normal spleen. Functional hyposplenism was confirmed on a peripheral blood film with evidence of target cells, spherocytes and Howell-Jolly bodies. A diagnosis of autosplenectomy complicating pneumococcal sepsis was therefore made, of which there is just one case previously reported. The patient continues to recover well and was discharged on penicillin prophylaxis after receiving vaccinations for hyposplenism.