Publications by authors named "Pier F Alesina"

Background: Partial adrenalectomy (PA), as an alternative to total adrenalectomy in selected cases, allows for the preservation of adrenocortical function, especially in hereditary and/or bilateral diseases. In this study, we analyze our experience in posterior retroperitoneoscopic PA (PRPA) and its impact on adrenocortical function.

Patients And Methods: From January 2010 to December 2023, 709 PRPAs were performed on 766 adrenal glands in a total of 697 patients (421F; 276M; and mean age 49.

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Purpose: In this study, we analyse the possibility to omit pre-incision PTH measurement since we routinely measure it at the time of pre-surgery ambulatory admission.

Methods: A total of 435 patients were enrolled. All patients with pHPT included underwent pre-surgical PTH level assessment as part of the pre-admission preparation to surgery.

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To compare minimally invasive video-assisted parathyroidectomy (MIVAP) versus conventional surgery for renal hyperparathyroidism (rHPT). Between 2006 and 2020, 53 patients underwent MIVAP and 182 underwent conventional parathyroidectomy for rHPT at the Kliniken Essen-Mitte and Knappschaftskrankenhaus Bochum, respectively. Two propensity score-matched groups were retrospectively analyzed: the MIVAP group (VG; n = 53) and the conventional group (CG; n = 53).

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The interest on partial adrenalectomy has steadily increased over the past twenty years. Adrenal pathologies are mostly benign, making an organ-preserving procedure attractive for many patients. The introduction of minimally invasive techniques played probably an important role in this process because they transformed a complex surgical procedure, related to the difficult access to the retroperitoneal space, into a simple operation improving the accessibility to this organ.

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Hypoparathyroidism is one of the most frequent complications of thyroid surgery, especially when associated with lymph node dissection in cases of thyroid cancer. Fluorescence-guided surgery is an emerging tool that appears to help reduce the rate of this complication. The present review aims to highlight the utility of fluorescence imaging in preserving parathyroid glands during thyroid cancer surgery.

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The morphological differentiation between benign and malignant adrenocortical tumors is an ongoing problem in diagnostic pathology. In recent decades the complex scoring systems have been widely used to calculate the probability of malignancy in adrenocortical tumors on the basis of a variety of histomorphological parameters. We herewith present a substantially simplified method to diagnose adrenocortical carcinoma by a single histomorphological parameter on a consecutive series of more than 800 adrenocortical tumors.

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The distribution of malignant tumors is strongly related to gender due to sex-related organ and tissue differentiation. Neoplasias of the adrenal glands are relatively common and typically benign. Mainly based on our recently published contributions, we analyzed the influence of gender on type of tumors, complexity of surgery, and long-term outcome.

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The minimally invasive retroperitoneal approach to the adrenal surgery has been described in the early 90s following the first description of laparoscopic adrenalectomy. Although the advantages of the technique compared to laparoscopic surgery have been demonstrated in many studies, it remained for a long period confined to few centers. The operation has been standardized over the years into a safe and reproducible procedure that finally gained worldwide acceptance in the last 10 years.

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Background: The posterior retroperitoneoscopic adrenal access represents a challenge in orientation and working space creation. The aim of this experimental acute study was to evaluate the impact of computer-assisted quantitative fluorescence imaging on adrenal gland identification and assessment of intraoperative remnant perfusion for adrenal resection in the posterior retroperitoneoscopic approach.

Methods: Six pigs underwent simultaneous (n = 5) or sequential (n = 1) bilateral posterior retroperitoneoscopic adrenalectomy (n = 12).

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Minimally invasive liver surgery has gained increasing popularity over the past decade. Nevertheless, laparoscopic treatment of lesions located in the posterior-superior locations remains challenging because of the difficulty to reach a safe exposition of those regions of the liver. We present a new retroperitoneoscopic approach for the minimally invasive treatment of posterior tumors.

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Background: A positive and concordant result of at least two diagnostic modalities is generally recommended prior to focused parathyroidectomy. The aim of this study was to analyze the results of surgery and the accurateness of preoperative ultrasonography (US) as single localization modality in patients who underwent parathyroidectomy without the adjunct of intraoperative Parathormone (PTH) measurement.

Methods: The cases with a preoperative US as the only localization technique, who underwent parathyroidectomy between 10/1999 and 12/2017, were selected from a prospectively maintained database.

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Purpose: Direct flexible laryngoscopy (DFL) is the golden standard to evaluate the vocal cord (VC) function in thyroid and parathyroid surgery pre- and postoperatively. Transcutaneous laryngeal ultrasonography (TLUS) could represent an alternative to the DFL and has been evaluated in the present study comparing the results of both methods performed at two referral centers for endocrine pathologies.

Methods: In the setting of a retrospective study, 668 patients (560 female, 118 male; mean age 50.

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Background: Cardiophrenic lymph nodes (CPLN) define FIGO stage IVB disease. We evaluate the pattern of CPLN metastases, their prognostic impact and the potential role of CPLN resection in patients with epithelial ovarian cancer (EOC).

Methods: Analysis of 595 consecutive patients with EOC treated in the period 01/2011-05/2016.

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Background: Sarcopenia was reported as a prognostic factor in cancer patients. Using computed tomography (CT), we analyzed the impact of sarcopenia on overall survival (OS) in patients with advanced epithelial ovarian cancer (EOC) after primary debulking surgery (PDS).

Methods: Preoperative CT scans of consecutive EOC patients (n = 323) were retrospectively assessed for skeletal muscle index (SMI) and muscle attenuation (MA; Hounsfield units [HU]).

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Background: Pheochromocytomas (PH) and paragangliomas (PGL) are rare tumours in children accounting for about 1% of the paediatric hypertension. While minimally invasive surgical techniques are well established in adult patients with PH, the experience in children is extremely limited. To the best of our knowledge, we herewith present the largest series of young patients operated on chromaffin tumours by minimally invasive access.

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Background: We evaluated the prognostic impact of the age-adjusted Charlson Comorbidity Index (ACCI) on both postoperative morbidity and overall survival (OS) in patients with advanced epithelial ovarian cancer (EOC) treated at a tertiary gynecologic cancer center.

Patients And Methods: Exploratory analysis of our prospectively documented tumor registry was performed. Data of all consecutive patients with stage IIIB-IV ovarian cancer who underwent primary cytoreductive surgery (PDS) from January 2000 to June 2016 were analyzed.

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Objective: To identify risk factors for anastomotic leakage (AL) in patients undergoing primary advanced ovarian cancer surgery and to evaluate the prognostic implication of AL on overall survival in these patients.

Methods: We analyzed our institutional database for primary EOC and included all consecutive patients treated by debulking surgery including any type of full circumferential bowel resection beyond appendectomy between 1999 and 2015. We performed logistic regression models to identify risk factors for AL and log-rank tests and Cox proportional hazards models to evaluate the association between AL and survival.

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Background: The treatment of hypercortisolism for patients with bilateral adrenal disease (BAD) is controversial. Bilateral total adrenalectomy results in permanent hypocortisolaemia requiring lifelong steroid replacement. A more conservative surgical approach, with less than bilateral total adrenalectomy (leaving functional adrenal tissue either unilaterally or bilaterally), represents an alternative option; however, long-term outcome or recurrence data are limited.

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Objective: Debulking surgery for advanced ovarian cancer does not routinely include opening of the thorax. Even systematic lymphadenectomy does not commonly extend to lymph nodes above the diaphragm. We evaluated the outcome of systematic resection of suspicious cardiophrenic lymph nodes detected on preoperative CT-scan in patients with advanced epithelial ovarian cancer (EOC).

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Background: Most investigations of thyroidectomy for metastatic renal cell carcinoma (RCC) are case studies or small series. This study was conducted to determine the contribution of clinical and histopathologic variables to local recurrence in the neck and overall survival after thyroidectomy for RCC metastases.

Methods: The medical records of 140 patients with thyroidectomy for metastatic RCC performed between 1979 and 2012 at 25 institutions in Germany and Austria were analyzed.

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Purpose: Minimally invasive video-assisted parathyroidectomy (MIVAP) is generally adopted for patients affected by primary hyperparathyroidism (pHPT) with clear preoperative localization. Standard bilateral neck exploration (BNE) is considered the obligate surgery for patients with unlocalized glands. We reviewed our experience of minimally invasive video-assisted BNE in patients with pHPT and negative or discordant localization studies.

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Background: Aldosterone producing lesions are a common cause of hypertension, but genetic alterations for tumorigenesis have been unclear. Recently, either of two recurrent somatic missense mutations (G151R or L168R) was found in the potassium channel KCNJ5 gene in aldosterone producing adenomas. These mutations alter the channel selectivity filter and result in Na(+) conductance and cell depolarization, stimulating aldosterone production and cell proliferation.

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Introduction: Cortical-sparing adrenalectomy in bilateral pheochromocytomas offers a postoperative corticoid-free course and has to be balanced against the risk of local recurrence. In this study we report our experience with the minimally invasive cortical-sparing adrenalectomy in patients with bilateral pheochromocytomas.

Methods: From January 1996 to February 2011, 66 patients (45 men, 21 women; mean age 36 ± 16 years) were treated for bilateral pheochromocytomas.

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Background: Although the safety and advantages of minimally invasive, video-assisted thyroidectomy (MIVAT) are well documented in nodular thyroid disease, its role in Graves' disease is controversial. We compared the outcomes of patients undergoing MIVAT with those undergoing conventional thyroidectomy for Graves' disease.

Methods: Of the 497 patients with Graves' disease referred for surgery (1999-2009), 157 (31.

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