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BACKGROUND: Low-grade lesions may benefit from pancreatic-sparing techniques. Resection of the uncinate process is rarely performed and reported due to its complexity that requires careful patient selection and accurate knowledge of the pancreatic anatomy. This study describes relevant anatomical elements to safely perform this complex operation in the minimally invasive setting. METHODS: In this study, consecutive patients undergoing resection of the uncinate process of the pancreas were studied. Patients undergoing open approach were used for comparison. Preoperative and intraoperative variables were recorded, and the diagnosis and tumor size were determined from the pathology reports. Immediate postoperative results and hospital stay were analyzed. Follow-up was used to assess long-term complications and endocrine and exocrine functions. RESULTS: Twenty-nine patients underwent resection of the uncinate process. The median age was 57 years. There were 21 males and eight females. Twenty patients underwent minimally invasive resection (14 laparoscopic and six by robotic approach) and nine were operated by open approach. A clinically relevant postoperative pancreatic fistula was observed in one patient (3.4%). Biochemical leakage was present in 44.8% of our patients. Mean follow-up was 62 months (3-147). Two patients needed reoperation during follow-up. No patient presented exocrine or endocrine insufficiency during late follow-up. CONCLUSION: Minimally invasive resection of the uncinate process of the pancreas is a complex but a feasible procedure that preserves the pancreatic endocrine and exocrine functions. This pancreas-sparing procedure is an interesting alternative to pancreaticoduodenectomy in selected patients.

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Resumen Introducción: A pesar de que el carcinoma de paratiroides es uno de los cánceres menos frecuentes del mundo, es importante tenerlo en cuenta al plantear el diagnóstico diferencial del hiperparatiroidismo primario, ya que su diagnóstico temprano tiene repercusiones en el tratamiento y el pronóstico vital del paciente. Caso Clínico: A continuación, se expone un caso clínico de un paciente con sintomatología abigarrada de hiperfunción paratiroidea que, dada la sospecha clínica de carcinoma de paratiroides y la no infiltración de estructuras adyacentes, fue tratado con una paratiroidectomía. Conclusión: Esta cirugía supone una menor morbilidad, sin suponer un detrimento para la supervivencia global del paciente.

Introduction: Parathyroid carcinoma should be taken into consideration among the differential diagnosis of primary hyperparathyroidism, even though it is one of the less common malignant tumours in the world, because an early diagnosis is essential for the treatment and the prognosis of the patient. Case Report: We present the case of a patient whose symptoms were compatible with hyperfunction of parathyroid gland. Due to the malignant disease suspicion and the non-invasion of adjacent tissue, he was treated with a parathyroidectomy. Conclusión: This type of treatment supposes a lower morbidity without decrease in overall survival, according to bibliography.

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Undescended parathyroid adenoma is a rare cause of primary hyperparathyroidism that happens < 1% of cases. If not suspected, it can lead to a negative bilateral parathyroid exploration and extensive iatrogenic trauma. We propose that with proper imaging the correct diagnosis can be established to simplify surgical management. We describe two cases of patients who underwent a targeted neck exploration due to an undescended parathyroid adenoma diagnosed with an appropriate preoperative imaging protocol. With an appropriate imaging protocol for primary hyperparathyroidism and parathyroid hormone aspirates, an undescended parathyroid adenoma can be primarily diagnosed to guide a focused parathyroidectomy.

El adenoma paratiroideo no descendido ocasiona hiperparatiroidismo primario en <1% de los casos. Si no se sospecha, puede llevar a exploraciones negativas y trauma iatrogénico extenso. Proponemos que, con un protocolo imagenológico adecuado, se puede realizar un diagnóstico correcto, simplificando el abordaje quirúrgico. Describimos dos casos en que se realizó una exploración de cuello dirigida debido a un adenoma paratiroideo no descendido diagnosticado con un protocolo de imagen preoperatorio apropiado. Un protocolo de imagen apropiado para hiperparatiroidismo primario y aspirados de PTH pueden diagnosticar de manera inicial un adenoma paratiroideo no descendido para guiar una paratiroidectomía dirigida.

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RESUMEN Introducción: Aunque el carcinoma papilar de tiroides (CPT) tiene una buena sobrevida, en el 30% de los casos recidivará a largo plazo. Se han descrito factores pronósticos como el tamaño, histopatología, procedimiento quirúrgico y administración de yodo radiactivo. Objetivo: Este trabajo pretende determinar factores de riesgo de recidiva a largo plazo. Material y método: Se realizó un estudio retrospectivo y observacional, se incluyeron a los pacientes sometidos a cirugía por CPT con seguimiento a 10 años, y se analizaron variables clínicas y bioquímicas relacionadas con la recidiva a largo plazo. Resultados: Se identificaron 91 pacientes con seguimiento de 10 años. No se encontró relación para recidiva con historia familiar oncológica, enfermedad tiroidea pre-via, pero sí con tabaquismo (p 0,040). Se encontraron a 27 (29%) con recidiva, en relación a lesiones >3 cm (p 0,05), y CPT multicéntrico (p 0,003). Conclusión: El tiempo de evolución prolongado favorece el crecimiento de las lesiones, y la diseminación de la enfermedad, así como la recidiva. El CPT es una enfermedad con capacidad metastásica a largo plazo, que requiere un seguimiento cercano y detección oportuna de pacientes susceptibles de recidiva. El tiempo entre el diagnóstico y la cirugía es un factor fundamental para el crecimiento de las lesiones y la propagación de la enfermedad, por lo que se debe reducir el tiempo de espera, evitando así las lesiones de mayor tamaño, diseminación de células tumorales y la recidiva con peor pronóstico para los pacientes.

ABSTRACT Introduction: The papillary thyroid cancer has good survival rate, however, 30% of the patients will have a recurrence. Prognostic factors have been described such as size, histopathology, surgical procedure and administration of radioactive iodine. Aim: To determine preventable risk factors for long-term recurrence. Material and method: This is a retrospective and observational study, patients undergoing surgery for CPT and 10 year follow up were included to analyze clinical and biochemical variables related to long-term recurrence. Results: Ninety-one patients with a 10-year follow-up were identified. No relationship was found for recurrence with oncological family history, previous thyroid disease, but smoking was a risk factor (p 0.040). We found 27 (29%) with relapse, in relation to lesions > 3 cm (p 0.05), and multicentric PTC (p 0.003). Conclusion: The long evolution time favors the growth of lesions, the spread of the disease, as well as the recurrence. The CPT is a disease with long-term metastatic capacity; it requires close monitoring and opportune detection of patients susceptible to recurrence. The time between diagnosis and surgery is a fundamental factor for the growth of the lesions and the spread of the disease, so the waiting time must be reduced, thus avoiding larger lesions, malignant cell dissemination and recurrence with worse prognosis for patients.

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BACKGROUND: Parathyroid gland (PG) identification during thyroid and parathyroid surgery is challenging. Accidental parathyroidectomy increases the rate of postoperative hypocalcaemia. Recently, autofluorescence with near infrared light (NIRL) has been described for PG visualization. The aim of this study is to analyze the increased rate of visualization of PGs with the use of NIRL compared to white light (WL). MATERIALS AND METHODS: All patients undergoing thyroid and parathyroid surgery were included in this study. PGs were identified with both NIRL and WL by experienced head and neck surgeons. The number of PGs identified with NIRL and WL were compared. The identification of PGs was correlated to age, sex, and histopathological diagnosis. RESULTS: Seventy-four patients were included in the study. The mean age was 48.4 (SD ±13.5) years old. Mean PG fluorescence intensity (47.60) was significantly higher compared to the thyroid gland (22.32) and background (9.27) (p < 0.0001). The mean number of PGs identified with NIRL and WL were 3.7 and 2.5 PG, respectively (p < 0.001). The difference in the number of PGs identified with NIRL and WL and fluorescence intensity was not related to age, sex, or histopathological diagnosis, with the exception of the diagnosis of thyroiditis, in which there was a significant increase in the number of PGs visualized with NIRL (p = 0.026). CONCLUSION: The use of NIRL for PG visualization significantly increased the number of PGs identified during thyroid and parathyroid surgery, and the differences in fluorescent intensity among PGs, thyroid glands, and background were not affected by age, sex, and histopathological diagnosis.

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