Hand-assisted laparoscopic splenectomy for a huge splenic vascular lesion with aneurysms in a patient with impending Kasabach-Merritt syndrome-like phenomenon.

Splenic vascular lesions are relatively rare and are usually found incidentally. However, the vascular lesions associated with Kasabach-Merritt syndrome, such as hemangioma, can be life-threatening. We herein describe the case of a young adult female patient with a huge splenic vascular lesion, aneurysms of the splenic artery, and increased plasma levels of fibrin/fibrinogen degradation products and D-dimers. Hand-assisted laparoscopic splenectomy was performed, after which the coagulopathy was drastically improved. Minimally invasive surgical intervention such as hand-assisted laparoscopic splenectomy should be considered as the first treatment choice in such a case.