[Benefit of Howell-Jolly bodies detection: finding of an acquired hyposplenism in a patient with Goodpasture syndrome].

Howell-Jolly bodies are intraerythrocytic inclusions corresponding to a small portion of chromatin. Red blood cells that contain these nuclear remnants are removed from the circulation by the spleen. In most cases, presence of Howell-Jolly bodies on a blood smear is the result of functional asplenia and splenectomy. Observation. We report incidental finding of numerous Howell-Jolly bodies in a patient followed by the nephrology department. This microscopic observation of blood smear led to a diagnostic imaging and to the evidence of a reduced spleen, possibly favoured by a history of Goodpasture syndrome in this renal transplant patient without splenectomy. Vaccination and antibioprophylaxy were proposed to prevent infectious risk linked to this splenic hypoplasia. Conclusion. Seeking of Howell-Jolly bodies could be made in every condition associated with a risk of splenic hypoplasia to prevent infectious risk.