Abdominal pain in combination with an unexplained hemolytic anemia are crucial signs to test for paroxysmal nocturnal hemoglobinuria: A case report.

Paroxysmal nocturnal hemoglobinuria (PNH), a rare benign hematological disorder, presents with a wide variety of clinical symptoms. A direct Coombs-negative hemolytic anemia combined with an increased LDH = Lactate dehydrogenase level are signs to test for PNH. Follow-up does not need any microscopic review's only flow cytometric PNH clone size.