ACTA ENDOCRINOLOGICA (BUC)

Context. Postoperative hypoparathyroidism is the most frequent complication of total thyroidectomy (transient form, 19-38%). Indocyanine green (ICG) fluorescence imaging is validated for parathyroid perfusion assessment; its predictive value combined with strict in situ preservation has not been reported in Romania. Objective. To evaluate the predictive performance of the Vidal Fortuny ICG score for transient postoperative hypoparathyroidism. Design. Prospective observational single-centre study (February 2024 - February 2025) at the National Institute of Endocrinology “C.I. Parhon”, Bucharest. Subjects and methods. Twenty-four consecutive adults received intraoperative ICG (5 mg IV; Karl Storz IMAGE1 S™ Rubina®) during thyroid surgery. Each parathyroid gland (PG) was assigned an ICG score (0/1/2) and a signal-to-background ratio versus the common carotid artery. Primary endpoint: biochemical hypoparathyroidism at 24 hours (PTH < 15 pg/mL or total Ca < 8.0 mg/dL). Results. Twenty-one women and 3 men; mean age 55.2 ± 14.1 years. All four PGs were identified in every patient (96/96, 100%). Score distribution (score 2/ 1/ 0): 63.5%/ 32.3%/ 4.2%. Transient hypoparathyroidism: 25.0%; dysphonia at 6 weeks: 0%. Sensitivity 66.7%, specificity 100%, PPV 100%, NPV 90%; LR– 0.33 (LR+ undefined: specificity 100%). Conclusions. As an adjunct to careful anatomical dissection, the ICG score reliably identifies devascularized parathyroid glands (specificity and PPV both 100%). In situ preservation without autotransplantation was safe. ICG complements anatomical dissection and warrants routine integration. Keywords: indocyanine green, thyroid surgery, postoperative hypoparathyroidism, near-infrared fluorescence, parathyroid preservation, perfusion score.

Introduction. Neuroendocrine renal carcinoma represents less than 1% of all primary neoplasia of the kidney. Most frequently poorly differentiated carcinoma is diagnosed in advanced stages and they have an aggressive evolution and limited survival rate. Neuroendocrine carcinomas that arise from the renal pelvis are frequently associated with squamous cell carcinoma or adenocarcinoma. Material and method. We present the case of a female patient, known for 3 years before with an undefined retroperitoneal lymph node metastasis, being diagnosed at present with a left large cell neuroendocrine renal carcinoma, who initially had lymph node metastasis. Results. Until now, 118 cases of primary neuroendocrine renal carcinomas have been reported. A limited number of poorly differentiated neuroendocrine carcinomas have been reported. Discussion. Due to the clinical and biological findings, the aggressive evolution with early metastasis of lung and bone, the patient is included in the group of poorly differentiated carcinomas. In these cases, multimodal treatment is a gold standard. After surgical treatment and palliative chemotherapy with platinum salts, we obtained a partial remission of the disease and the control of symptoms. Conclusions. Regarding large cell neuroendocrine carcinoma, the surgical treatment remains the treatment of choice. Chemotherapy can determine limited results, improve the quality of life and enhance the overall survival rate.