Evaluation of a perioperative steroid coverage after pituitary surgery.

INTRODUCTION: Serum cortisol levels within the first days after pituitary surgery have been shown to be a predictor of post-surgical adrenal insufficiency. However, the indication of empirical glucocorticoids to avoid this complication remains controversial. The objective is to assess the role of cortisol in the early postoperative period as a predictor of long-term corticotropic function according to the pituitary perisurgical protocol with corticosteroid replacement followed in our center. METHODS: One hundred eighteen patients who underwent surgery in a single center between December 2012 and January 2020 for a pituitary adenoma were included. Of these, 54 patients with previous adrenal insufficiency (AI), Cushing's disease, or tumors that required treatment with high-dose glucocorticoids (GC) were excluded. A treatment protocol with glucocorticoids was established, consisting of its empirical administration at rapidly decreasing doses, and serum cortisol was determined on the third day after surgery. Subsequent adrenal status was assessed through follow-up biochemical and clinical evaluations. RESULTS: Out of the 64 patients treated, there were 56 macroadenomas and 8 microadenomas. The incidence of adrenal insufficiency after pituitary surgery was 4.7%. The optimal cut-off value that predicted an adequate corticotropic reserve, taking into account the best relationship of specificity and sensitivity, was ≥4.1 µg/dl for serum cortisol on the third day (sensitivity 95.1%, specificity 100%). CONCLUSION: Serum cortisol on the third day predicts the development of adrenal insufficiency. We suggest a cortisol cut-off point of ≥4.1 µg/dl on postoperative on the third day after surgery as a predictor of the adrenal reserve in the long-term.

El carcinoma diferenciado incidental de tiroides es menos prevalente en la enfermedad de Graves que en el bocio multinodular / Incidental differentiated thyroid carcinoma is less prevalent in Graves’ disease than in multinodular goiter

Objetivos Entre los factores moduladores de prevalencia de carcinoma diferenciado de tiroides (CDT) destacan la concentración plasmática de TSH, la nodularidad tiroidea y la asociación con la autoinmunidad. La TSH estimula la proliferación de células foliculares normales y neoplásicas. Los anticuerpos contra el receptor de TSH (TSI), por su acción TSH-like, deberían estimular el crecimiento del CDT. El objetivo fue comparar la prevalencia de CDT incidental en pacientes tiroidectomizados por enfermedad benigna. Pacientes y métodos Se estudió la anatomía patológica de 372 pacientes con diagnósticos prequirúrgicos de bocio multinodular normofuncionante (BMN) o hipertiroidismo. La gammagrafía, y/o presencia de TSI diferenció entre bocio multinodular hiperfuncionante (BMH) y enfermedad de Graves (EG). Se comparó la prevalencia de CDT en cada categoría (χ). Resultados Se encontraron 221 sujetos con BMN, 125 con EG y 26 con BMH. Se hallaron 58 CDT con la siguiente distribución: BMN, 49 (22,2%); EG, 8 (6,4%) y BMH, 1 (3,8%). La diferencia de prevalencia de CDT entre los grupos fue estadísticamente significativa (p<0,001). Ajustando por edad, el BMN tiene mayor prevalencia de CDT respecto a EG, con OR de 4,17 (p<0,001). El tamaño (mm) tumoral (media±DE) fue: 6,92±11,26; 1,97±1,85 y 9,0 en BMN, EG y BMH respectivamente (p=0,017). Conclusiones La prevalencia de CDT incidental es menor en EG que en BMN, siendo el resultado independiente de la edad. Este hallazgo puede indicar una predisposición hacia el desarrollo de CDT en pacientes con enfermedad nodular tiroidea y/o que la reacción autoinmunitaria puede resultar un factor protector contra el desarrollo de enfermedad neoplásica (AU)

Objective Risk factors for differentiated thyroid carcinoma (DTC) are poorly understood, but serum TSH levels, thyroid nodularity, and presence of autoimmunity are well-recognized factors that modulate DTC prevalence. TSH stimulates proliferation of both normal and neoplastic follicular cells. Consequently, thyroid-stimulating immunoglobulins (TSI), because of its TSH-like action, should induce DTC progression in patients with Graves’ disease (GD). The study objective was to compare the prevalence of incidental DTC in patients undergoing thyroidectomy for benign thyroid disease. Methods The pathology reports of 372 patients with preoperative diagnosis of euthyroid multinodular goiter (EMG) or hyperthyroidism were reviewed. Scintigraphy results and serum TSI levels were used to diagnosed either GD or hyperactive MG (HMG) to hyperthyroid subjects. Prevalence of DTC in each category was calculated using a Chi-square test. Results EMG, GD, and HMG were diagnosed in 221, 125, and 26 patients. There were 58 DTCs, distributed as follows [n (%)]: EMG, 49 (22.2%); GD, 8 (6.4%), and HMG, 1 (3.8%). Difference in prevalence of incidental DTC between the groups was statistically significant (p<0.001). After adjustment for age, patients with EMG had a greater DTC prevalence than GD patients, with an OR of 4.17 (p<0.001). Tumor size (mm, mean±SD) was 6.92±11.26, 1.97±1.85, and 9.0 for EMG, GD and HMG respectively (p=0.017). Conclusions Incidental DTC was less prevalent in GD as compared to EMG irrespective of age. This finding may suggest a predisposition to develop DTC in patients with thyroid nodular disease and/or a potential effect of autoimmunity to protect against development of neoplastic disease (AU)

[Incidental differentiated thyroid carcinoma is less prevalent in Graves' disease than in multinodular goiter]. / El carcinoma diferenciado incidental de tiroides es menos prevalente en la enfermedad de Graves que en el bocio multinodular.

OBJECTIVE: Risk factors for differentiated thyroid carcinoma (DTC) are poorly understood, but serum TSH levels, thyroid nodularity, and presence of autoimmunity are well-recognized factors that modulate DTC prevalence. TSH stimulates proliferation of both normal and neoplastic follicular cells. Consequently, thyroid-stimulating immunoglobulins (TSI), because of its TSH-like action, should induce DTC progression in patients with Graves' disease (GD). The study objective was to compare the prevalence of incidental DTC in patients undergoing thyroidectomy for benign thyroid disease. METHODS: The pathology reports of 372 patients with preoperative diagnosis of euthyroid multinodular goiter (EMG) or hyperthyroidism were reviewed. Scintigraphy results and serum TSI levels were used to diagnosed either GD or hyperactive MG (HMG) to hyperthyroid subjects. Prevalence of DTC in each category was calculated using a Chi-square test. RESULTS: EMG, GD, and HMG were diagnosed in 221, 125, and 26 patients. There were 58 DTCs, distributed as follows [n (%)]: EMG, 49 (22.2%); GD, 8 (6.4%), and HMG, 1 (3.8%). Difference in prevalence of incidental DTC between the groups was statistically significant (p<0.001). After adjustment for age, patients with EMG had a greater DTC prevalence than GD patients, with an OR of 4.17 (p<0.001). Tumor size (mm, mean ± SD) was 6.92 ± 11.26, 1.97 ± 1.85, and 9.0 for EMG, GD and HMG respectively (p=0.017). CONCLUSIONS: Incidental DTC was less prevalent in GD as compared to EMG irrespective of age. This finding may suggest a predisposition to develop DTC in patients with thyroid nodular disease and/or a potential effect of autoimmunity to protect against development of neoplastic disease.