ea0049ep1362 | Thyroid (non-cancer) | ECE2017
Monteiro Joana
, Ferreira Marta
, Pires Miguel
, Vieira Alexandra
, Guelho Daniela
, Pereira Teresa
, Pinhal Fernanda
, Fernandes Celio
Nonadherence to levothyroxine therapy is one cause of persistent hypothyroidism. To distinguish nonadherence from malabsorption, a levothyroxine absorption test (LAT) is sometimes required. The authors report a case of a 60-year-old female patient suffering from hypothyroidism resistant to oral levothyroxine (LT4) substitution after radioiodine therapy for GravesÂ’ disease. Despite the continuous increases of LT4, over 10 years, to a maximum of 1 mg/d...