Cerebral venous thrombosis and heparin-induced thrombocytopenia in an 18-year old male with severe ulcerative colitis

Figure 1 T1 contrast enhanced transverse image showing a focal dark area (arrow) in the right transverse sinus and confluence, which are consistent with a cerebral sinus thrombosis.

Figure 2 Platelet count expressed in 10⁹/L blood (normal range, 125-340) from readmission until discharge showing the progress of thrombocytopenia. The letters denote start or end of heparin (Hs and He), fondaparinux (Fs and Fe), warfarin (Ws), and azatioprine (Ae and As). W1 denotes only one dose. Dotted line denotes a level of thrombocytes lower than their normal range.