References
- Lofgren S, Lundback H: The bilateral hilar lymphoma syndrome; a study of the relation to age and sex in 212 cases. Acta Med Scand 1952; 142: 259–264.
- Cantini F, Niccoli L, Olivieri I, Barozzi L, Pavlica P, Bozza A et al.: Remitting distal lower extremity swelling with pitting oedema in acute sarcoidosis. Ann Rheum Dis 1997; 56: 565–566.
- Mañá J, Gómez-Vaquero C, Salazar A, Valverde J, Juanola X, Pujol R: Periarticular ankle sarcoidosis: a variant of Löfgren’s syndrome. J Rheumatol 1996; 23: 874–877.
- Olivieri I, Salvarani C, Cantini F: Remitting distal extremity swelling with pitting edema: a distinct syndrome or a clinical feature of different inflammatory rheumatic diseases? J Rheumatol 1997; 24: 249–252.
- Kellner H, Späthling S, Herzer P: Ultrasound findings in Löfgren’s syndrome: is ankle swelling caused by arthritis, tenosynovitis or periarthritis? J Rheumatol 1992; 19: 38–38.
- Le Bras E, Ehrenstein B, Fleck M, Hartung W: Evaluation of ankle swelling due to Lofgren’s syndrome: a pilot study using B-mode and power Doppler ultrasonography. Arthritis Care Res (Hoboken) 2014; 66: 318–322.
- Goussault C, Albert JD, Coiffier G, Lamer F, Guillin R, Le Goff B et al.: Ultrasound characterization of ankle involvement in Löfgren syndrome. Joint Bone Spine 2018; 85: 65–69.
- Trayes KP, Studdiford JS, Pickle S, Tully AS: Edema: diagnosis and management. Am Fam Physician 2013; 88: 102–110.
- Palmucci S, Torrisi SE, Caltabiano DC, Puglisi S, Lentini V, Grassedonio E et al.: Clinical and radiological features of extra-pulmonary sarcoidosis: a pictorial essay. Insights Imaging 2016; 7: 571–587.