John Libbey Eurotext

European Journal of Dermatology


sQUIZ your knowledge! Painful toe ulcers in a 79-year-old woman Volume 32, numéro 3, May-June 2022


  • Figure 1.
1 Department of Dermatology and Reference Center for Rare Diseases and Vascular Malformations (MAGEC), University Hospital Center of Tours, Tours, France
2 University of Tours, 37000, Tours, France
3 Universities of Tours and Nantes, INSERM 1246-SPHERE, 37000, Tours, France

A 79-year-old woman presented with a three-month history of erythrocyanosis on her lower extremities (figure 1A) and painful ulcerated lesions (figure 1B). She had no other cutaneous or extracutaneous abnormalities. Doppler ultra-sonography of the lower-extremity showed normal results. Blood tests revealed a platelet level of 560 G/L (normal: 150-400 G/L). A skin biopsy of a livedoid lesion showed multiple thrombi in the dermal capillaries (figure 1C).What is your diagnosis?Answer: Essential thrombocythemia [...]