Engineered mucoperiosteal scaffold for cleft palate regeneration towards the non-immunogenic transplantation.

Cleft lip and palate (CL/P) is the most prevalent craniofacial birth defect in humans. None of the surgical procedures currently used for CL/P repair lead to definitive correction of hard palate bone interruption. Advances in tissue engineering and regenerative medicine aim to develop new strategies to restore palatal bone interruption by using tissue or organ-decellularized bioscaffolds seeded with host cells. Aim of this study was to set up a new natural scaffold deriving from a decellularized porcine mucoperiosteum, engineered by an innovative micro-perforation procedure based on Quantum Molecular Resonance (QMR) and then subjected to in vitro recellularization with human bone marrow-derived mesenchymal stem cells (hBM-MSCs). Our results demonstrated the efficiency of decellularization treatment gaining a natural, non-immunogenic scaffold with preserved collagen microenvironment that displays a favorable support to hMSC engraftment, spreading and differentiation. Ultrastructural analysis showed that the micro-perforation procedure preserved the collagen mesh, increasing the osteoinductive potential for mesenchymal precursor cells. In conclusion, we developed a novel tissue engineering protocol to obtain a non-immunogenic mucoperiosteal scaffold suitable for allogenic transplantation and CL/P repair. The innovative micro-perforation procedure improving hMSC osteogenic differentiation potentially impacts for enhanced palatal bone regeneration leading to future clinical applications in humans.

Pancoast tumour: current therapeutic options.

BACKGROUND: Pancoast's syndrome is caused by malignant neoplasm of superior sulcus of the lung which produces destructive lesions of thoracic inlet and comes along with the involvement of brachial plexus and stellate ganglion. Computed tomography (CT) or magnetic resonance imaging (MRI) scans can detect early lesions otherwise missed by routine radiographs and can also define the local extent or metastatic progression of the disease. Protocols involving combinations of irradiation, chemotherapy, and surgery are currently being under investigation to determine the best management. AIMS: This work reviewed the current diagnostic and therapeutic approaches to Pancoast's tumors. DISCUSSION: Patients with lung superior sulcus carcinoma should be considered for surgery only after an appropriate diagnostic assessment. The perfect candidate for surgery should have a confined to the chest disease with T3N0M0 staging. Inoperable patient with severe pain after irradiation therapy may benefit from palliative surgical resection. Medical therapy plays only a secondary role in lung cancers, patients with disseminated lung cancer might require palliative treatment and medical management of paraneoplastic syndrome symptoms. Following surgery, radiation and chemotherapy may improve local and systemic control by addressing individual adverse findings. CONCLUSIONS: The cooperation of surgeons, clinicians and radiologists represents the gold standard today and a multidisciplinary approach is essential to achieve the best outcome possible. Further studies are advisable in order to define the best surgical approach and the real advantage of mini-invasive surgery by comparison with open surgery.

Ultrasound-guided port-a-cath positioning with the new one-shoot technique: thoracic complications.

OBJECTIVES: Port-a-cath catheterization is often required for those patients who need long-term therapies (malnutrition, neoplasm, renal failure, other severe diseases). The use of ports for a wide range of indications is not exempt from complications. Ultrasound-guided central venous catheterization (CVC) is a safe and fast technique for the introduction of the catheter inside a central vein. This retrospective study reports our experience with US-guided CVC in patient eligible for port-a-cath implantation. MATERIALS AND METHODS: From January 2007 to March 2017, 108 CVC (out of 770 procedures), were positioned using an ultrasound guide, with the new "one-shoot technique" (group 1) and the classic Seldinger technique (group 2). RESULTS: One-shoot techniques showed a reduced operative time, in comparison to Seldinger technique, with a negligible minor complication rate. No major complication were evidenced. CONCLUSIONS: CVC is a safe procedure, although not free from complications. Ultrasonography enhances safety of the procedure by decreasing puncture attempts and complications; it is helpful in patients with vascular anatomical variations, with no visualized or palpable landmarks or for patients with coagulation disorders.

Iatrogenic hypoparathyroidism after surgery for retrosternal goitre. A single centre retrospective analysis.

AIM: The aim of this study is to assess, retrospectively, the incidence of secondary hypoparathyroidism after total thyroidectomy in patients with retrosternal goitre. MATERIAL AND METHODS: From January 2009 to September 2015, 622 patients who undergone total thyroidectomy for goitre, were retrospectively observed. The patients were divided into two group: Group A, including 58 patients with retrosternal goitre and Group B, including 562 patients with in situ goitre. Those patients with diseases of the parathyroid glands, assumption of drugs modifying calcium metabolism and who received blood transfusions before or after surgery, were excluded from the study. In both groups, a total thyroidectomy was performed under general anaesthesia. The upper and lower parathyroid glands in both groups were observed in situ as well. All surgical specimens underwent histological examination. RESULTS: Transient hypocalcaemia was observed in a higher percentage in group A (15% vs 7%, P <0.05). The mean hospital stay was greater in group A (P <0.05). There were no statistically differences between the two groups in terms of permanent hypocalcaemia and post-operative blood ionized calcium (72hours and 1 month). CONCLUSIONS: Many efforts should be made to respect parathyroids during total thyroidectomy in retrosternal goitre; greater attention should be given to inferior parathyroid glands that should be displayed, respecting the vasculature and performing a terminal lower thyroid artery ligation in order to reduce the risk of transient hypocalcaemia and - as a consequence - the average hospital stay.

Videolaparoscopic cholecystectomy in patients with previous abdominal surgery. Personal experience and literature review.

OBJECTIVES: Laparoscopic cholecystectomy (LC) is today the "gold standard" treatment of gallbladder stones. Role of LC is still debated in the presence of abdominal scars due to the frequent post-operative adhesions which make access to the peritoneal cavity difficult. This study aim to assess role and outcomes of LC on a previous abdominal surgery on the scarred abdomen. MATERIALS AND METHODS: We have carried out a retrospective study on 499 consecutive patients who had undergone LC from 2009 to 2015; 21 of these (4.2%) undergone previous abdominal surgery. In all 21 cases the pneumoperitoneum was established with Veress needle at the Palmer's point and the procedure was carried out after adhesiolysis in 62% of cases. RESULTS: The mean operative time was 79±12 minutes; none of the patients with previous abdominal surgery required conversion to open cholecystectomy and there were no postoperative complications related to Veress introduction or to the adhesiolysis. The difficult dissection and adhesiolysis were more frequent in the patients with upper abdomen scar (62%) respect to lower abdomen scar (38%). CONCLUSIONS: Patients with scarred abdomen for previous abdominal surgery had obviously more adhesions in the abdomen than patients without preceding surgery, but today previous abdominal surgery should not constitutes absolute contraindications to LC. Moreover, patients with previous lower abdominal incisions had fewer adhesions in the upper abdomen than did patients with upper incision and, probably, in these cases adhesiolysis is unnecessary, if the surgical field is well exposed whereas adhesiolysis is mandatory when the adhesions are thick and widespread, to the anterior and posterior abdominal wall.

[Risk factors' analysis of transient and permanent hypoparathyroidism after thyroidectomy].

AIMS: This review evaluates those main risk factors that can affect patients undergoing thyroidectomy, to reach a better pre- and post-operative management of transient and permanent hypoparathyroidism. DISCUSSION: The transient hypoparathyroidism is a potentially severe complication of thyroidectomy, including a wide range of signs and symptoms that persists for a few weeks. The definitive hypoparathyroidism occurs when a medical treatment is necessary over 12 months. Risk factors that may influence the onset of this condition after thyroidectomy include: pre- and post-operative biochemical factors, such as serum calcium levels, vitamin D blood concentrations and intact PTH. Other involved factors could be summarized as follow: female sex, Graves' or thyroid neoplastic diseases, surgeon's dexterity and surgical technique. The medical treatment includes the administration of calcium, vitamin D and magnesium sometimes. CONCLUSIONS: Although biological and biochemical factors could be related to iatrogenic hypoparathyroidism, the surgeon's experience and the used surgical technique still maintain a crucial role in the aetiology of this important complication.

The medical and surgical treatment in secondary and tertiary hyperparathyroidism. Review.

INTRODUCTION: Hyperparathyroidism is an alteration of the pathophysiological parathyroid hormone (PTH) secretion due or an independent and abnormal release (primary or tertiary hyperparathyroidism) by the parathyroid or an alteration of calcium homeostasis that stimulates the excessive production of parathyroid hormone (secondary hyperparathyroidism). AIMS: There is not a standard, clinical or surgical, treatment for hyperparathyroidism. We review current diagnostic and therapeutic methods. DISCUSSION: In secondary hyperparathyroidism (2HPT) there is a progressive hyperplasia of the parathyroid glands and an increased production of parathyroid hormone. Several causes are proposed: chronic renal insufficiency, vitamin D deficiency, malabsorption syndrome. The tertiary hyperparathyroidism (3HPT) is considered a state of excessive autonomous secretion of PTH due to long-standing 2HPT and it's usually the result of a lack of suppression in the production of PTH. The pathophysiological implications are both skeletal and extraskeletal: it damages the cardiovascular system, nervous system, immune, hematopoietic and endocrine system. The introduction of new drugs has improved the survival of these patients, allowing the inhibition of the synthesis of PTH. Indication for surgical treatment is unresponsive medical therapy. CONCLUSIONS: There are no large prospective studies that comparing the medical and surgical treatment. The choice is not unique and we have to consider the singolar case and the clinical condition of the patient.

Terminal ligature of inferior thyroid artery branches during total thyroidectomy for multinodular goiter is associated with higher postoperative calcium and PTH levels.

PURPOSE: To evaluate the impact of truncal versus terminal branch ligature of the inferior thyroid artery (ITA) on postoperative calcium and PTH plasma levels in patients undergoing total thyroidectomy for multinodular goiter. METHODS: A prospective randomized study was performed comparing a group of patients that underwent either truncal ligature of the ITA (group 1) or terminal ligature of ITA branches (group 2). RESULTS: A series of 126 consecutive patients with non-toxic euthyroid multinodular goiter underwent total thyroidectomy. Truncal ligature of the ITA was performed in 63 patients (group 1) and terminal branch ITA ligature in 63 patients (group 2). Postoperative ionized serum calcium (mmol/L) at 24 hours was significantly lower in group 1 than in group 2 patients (1.22 ± 0.06 vs. 1.25 ± 0.05, P<0.05) and at 48 hours (1.20 ± 0.05 vs. 1.23 ± 0.05, P<0.05). Mean postoperative PTH levels (pg/mL) at 4 hours after thyroidectomy were significantly lower in group 1 than in group 2 patients (22.32 ± 11.64 vs. 25.82 ± 12.87, P=0.044). Mean hospital stay (hours) was higher in group 1 than in group 2 patients (87.47 ± 41.04 vs. 70.34 ± 24.82, P<0.05). CONCLUSION: This study shows that terminal ligature of ITA branches during total thyroidectomy for multinodular goiter is associated with higher mean postoperative calcium and PTH levels, and shorter hospital stay. However, no significant difference in terms of permanent hypoparathyroidism was observed between the two groups.

Analysis of the thymidylate synthase gene structure in colorectal cancer patients and its possible relation with the 5-Fluorouracil drug response.

Thymidylate synthase (TS) catalyzes methylation of dUMP to dTMP and it is the target for the 5-Fluorouracil (5-FU) activity. Barbour et al. showed that variant structural forms of TS in tumour cell lines confer resistance to fluoropyrimidines. We planned to perform the whole TS gene structure by means of sequencing techniques in human colorectal cancer (CRC) samples to try to identify the presence of any possible TS variant form that could be responsible of fluoropyrimidines drug resistance and of the worse prognosis. We performed the TS-DNA gene sequence in 68 CRC from patients of A, B, and C Dukes' stages and different histological grade, but we did not find any mutation in the TS-DNA structure. In the future we intend to widen the TS structure analysis to the metastatic CRCs, because due to their higher genomic instability, they could present a TS variant form responsible of the fluoropyrimidines drug resistance and the worse prognosis.

Herpes simplex esophagitis in immunocompetent host: a case report.

Introduction. Herpes simplex esophagitis is well recognized in immunosuppressed subjects, but it is infrequent in immunocompetent patients. We present a case of HSE in a 53-year-old healthy man. Materials and Methods. The patient was admitted with dysphagia, odynophagia, and retrosternal chest pain. An esophagogastroduodenoscopy revealed minute erosive area in distal esophagus and biopsies confirmed esophagitis and findings characteristic of Herpes Simplex Virus infection. Results. The patients was treated with high dose of protonpump inhibitor, sucralfate, and acyclovir, orally, with rapid resolution of symptoms. Discussion. HSV type I is the second most common cause of infectious esophagitis. The majority of symptomatic immunocompetent patients with HSE will present with an acute onset of esophagitis. Endoscopic biopsies from the ulcer edges should be obtained for both histopathology and viral culture. In immunocompetent host, HSE is generally a self-limited condition. Conclusions. HSE should be suspected in case of esophagitis without evident cause, even if the patient is immunocompetent. When the diagnosis of HSE is confirmed, careful history and assessment for an immune disorder such as HIV infection is crucial, to look for underlying immune deficiency.

Aberrant methylation within RUNX3 CpG island associated with the nuclear and mitochondrial microsatellite instability in sporadic gastric cancers. Results of a GOIM (Gruppo Oncologico dell'Italia Meridionale) prospective study.

BACKGROUND: Gastric cancer (GC) development is a multistep process, during which numerous alterations accumulate in nuclear and mitochondrial DNA. A deficiency of repair machinery brings about an accumulation of errors introduced within simple repetitive microsatellite sequences during replication of DNA. Aberrant methylation is related to microsatellite instability (MSI) by the silencing of the hMLH1 gene. The aim of this study is to investigate a possible relationship between the RUNX3 promoter methylation, nuclear microsatellite instability (nMSI) and mitochondrial microsatellite instability (mtMSI), in order to clarify its biological role in GC. PATIENTS AND METHODS: nMSI and mtMSI were evaluated in a consecutive series of 100 GC patients. For the analysis of the nMSI, we followed the National Cancer Institute guidelines. mtMSI was assessed by analyzing a portion of the displacement-loop region. The aberrant methylation of RUNX3 was analyzed in 40 GC patients by methylation-specific PCR. RESULTS: Overall, 55% of GC demonstrated methylation of the RUNX3 promoter; 82% of GC was classified as stable microsatellite instability, 5% as low-level microsatellite instability and 13% as high-level microsatellite instability (MSI-H); mtMSI was detected in 11% of GC. A significant association was found between mtMSI and tumor-node-metastasis staging, furthermore an interesting association between MSI-H status, mtMSI and RUNX3 methylation. CONCLUSION: These data suggest that RUNX3 is an important target of methylation in the evolution of mtMSI and nMSI-H GC.

4843delC of the BRCA1 gene is a possible founder mutation in Southern Italy (Sicily).

BACKGROUND: The frequency and the type of BRCA1 mutations vary widely and might have different geographic and ethnic distribution. Most of these alterations are generally found in isolated populations as a consequence of the founder effect. The object of this study was to determine whether 4843delC, a deleterious mutation of the BRCA1 gene, might be due to a founder effect originating in the Sicilian region of Italy. This mutation was described by us for the first time and identified in two unrelated Sicilian families with hereditary breast/ovarian cancer. The two families were from the same geographical area (south-western area of Palermo, Sicily). The homogeneity of the ethnic group of the two families and the Single Nucleotide Polymorphism (SNPs) analysis of probands led us to perform a study of the allelotype of the various members. PATIENTS AND METHODS: The analysis of the haplotype of the probands and of several family members was conducted by means of a study of the highly polymorphic microsatellites within or flanking the BRCA1 gene. RESULTS: This analysis revealed the presence of a common allele associated with the mutation. CONCLUSIONS: We therefore conclude that 4843delC of the BRCA1 gene is a possible founder mutation in the Sicilian population.

Weekly docetaxel and gemcitabine as first-line treatment for metastatic breast cancer: results of a multicenter phase II study.

OBJECTIVES: We conducted a multicenter phase II study to evaluate the clinical efficacy, toxicity, and dose intensity of a new weekly schedule of docetaxel and gemcitabine as first-line treatment of metastatic breast cancer patients. METHODS: We enrolled 58 patients, 52% of whom had received a previous anthracycline-containing chemotherapy. The treatment schedule was: docetaxel 35 mg/m2 and gemcitabine 800 mg/m2 i.v. on days 1, 8, 15 every 28 days. RESULTS: All patients were assessable for toxicity and 56 for efficacy. Overall response rate was 64.3% with 16.1% of complete responses and 48.2% of partial responses. Median survival was 22.10 months (95% CI: 15.53-28.67) and median time to tumor progression was 13.6 months (95% CI: 10.71-16.49). The most common hematological toxicity was neutropenia (no febrile neutropenia), which occurred in 28 patients (48.3%) but grade 3-4 in only 8 patients (14%). Alopecia, the most common nonhematological toxicity, occurred in 20 (34.5%) patients, but only 5 patients (8.6%) experienced grade 3 alopecia. CONCLUSION: The activity of docetaxel and gemcitabine in metastatic breast cancer is confirmed. The promising results of the employed schedule, in agreement with other published studies, need to be further confirmed within a phase III study.

[Fournier's gangrene: case report and review of recent literature]. / Malattia di Fournier: caso clinico e revisione della letteratura internazionale recente.

OBJECTIVE: The authors report their experience in diagnosis and treatment of one case of Fournier's gangrene; recent international literature review. EXPERIMENTAL DESIGN: Complete clinical report. Diagnostic, clinical and prognostic indication, evaluation of effectiveness of surgical treatment (debridement and necrosectomy) and follow-up; comparison between indications and multidisciplinary approach proposed by international literature. SETTING: Operative Unit of General and Thoracic Surgery. University "Paolo Giaccone" of Palermo. INTERVENTION: Repeated surgical treatment previous multimodal approach, according to international guide-lines. RESULTS: Complete recovery with "restitutio ad integrum". No relapse were recorded at follow up. CONCLUSIONS: Fournier's gangrene is an uncommon and aggressive synergistic fasciitis of the perineum and genital organs, which may bring the patient to death; it is a true surgical emergency. The disease can no longer be considered to be idiopathic; in most cases a urologic, colorectal or cutaneous source can be identified. Despite antibiotics and aggressive debridement, the mortality rate remains high, particularly in the elderly, in patients with renal failure, and in patients with extensive disease. The presentation is highly variable, necessitating a high index of suspicion. High risk patients include diabetics, alcoholics and debilitated and immunosuppressed individuals. As the AIDS population increases, the incidence of Fournier's gangrene may increase as well. In questionable cases, imaging modalities should be performed to allow early diagnosis and to reduce misses diagnosis. Broad spectrum antibiotics (while waiting for the results of culture and antibiogram effectuated on tissue specimens obtained during necrosectomy) and aggressive debridement remain the hallmarks of treatment. Hyperbaric oxygen therapy and improved local wound care may decrease the extent of tissue destruction. The surgical operation has to be performed in emergency to avoid a rapid spread of tissue necrosis and a possible development towards septic shock. Reconstructive techniques afford better cosmetic results. With early recognition, prompt treatment, improved wound care and reconstructive efforts, the mortality rates and cosmetic results should continue to improve.

[Endoscopic removal of a Dormia basket impacted in the biliary tract during treatment of a difficult residual choledocholithiasis. Report of a case]. / Rimozione endoscopica di un cestello di Dormia impattato nella via biliare in corso di trattamento di una coledocolitiasi residua difficile. Report di un caso.

OBJECTIVE: The authors report their experience about the treatment of a broken Dormia in CBD in elder with "difficult" residual choledocholithiasis, with T tube. DESIGN: Report of case. Evaluation of effectiveness of endoscopic treatment with 2-years follow-up. SETTING: Operative Unit of General and Thoracic Surgery, Department of Surgical, Anatomical and Oncological Disciplines. Policlinico "Paolo Giaccone"--Palermo. INTERVENTION: Endoscopic removal of Dormia broken and impacted in CBD after 2 session of extracorporeal shock wave lithotripsy (ESWL). RESULTS: Resolution of the pathology with 2 session of ERCP and cholangiographic control. CONCLUSIONS: ERCP and ES are the gold standard in the treatment of choledocholithiasis. Rare complication of this method is the rupture of Dormia Basket in CBD: this occurrence can be solved by endoscopy, but only in well experienced endoscopic teams.

[Unusual case of intestinal obstruction at the ileal level: strangulated obturator hernia. A case report]. / Un raro caso di ostruzione intestinale a livello ileale: l'ernia otturatoria strozzata. Report di un caso.

OBJECTIVE: The authors report their experience about treatment of a rare case of intestinal (ileal) obstruction by strangulated obturator hernia. DESIGN: Report of 1 case; evaluation of effectiveness of surgical treatment, 2-years follow-up and revision of literature about its clinical presentation and treatment. SETTING: Operative Unit of General and Thoracic Surgery, Department of Surgical, Anatomical and Oncological Disciplines. Policlinico, University of Palermo. INTERVENTIONS: The patient was submitted to curative and radical surgery. RESULTS: Resolution of the pathology. Follow up (2 years) negative. CONCLUSIONS: Obturator hernia is a rare pathology, with difficult and delayed diagnosis: all these character make dangerous this hernia, with a risk of high morbidity and mortality (delayed diagnosis and treatment). The only useful treatment is surgery, especially in front of intestinal obstruction, with a wide median laparotomy.

[Surgical treatment of varicocele in day hospital. Our experience]. / Il trattamento chirurgico del varicocele in regime di "day hospital". Nostra esperienza.

OBJECTIVE: The authors report their experience about surgical treatment of varicocele in Day Hospital (DH). DESIGN: Report of 10 cases; evaluation of effectiveness of the surgical treatment. SETTING: Operative Unit of General and Thoracic Surgery, Department of Surgical, Anatomical and Oncological Disciplines. Policlinico, University of Palermo. INTERVENTIONS: Surgical procedure according to Ivanissevich in all 8 patients. RESULT: 100% successful. CONCLUSION: Surgery in DH is a valid treatment option in varicocele, by the technical and economic point.

[Surgical treatment of epiphrenic diverticulum based on associated functional changes: report of a case]. / Trattamento chirurgico di diverticolo epifrenico modulato sulle alterazioni funzionali associate: presentazione di un caso.

OBJECTIVE: The authors report their experience about the surgical treatment of a epiphrenic diverticulum (ED) associated with motor disfunctions and gastroesophageal reflux. DESIGN: Report of 1 case; evaluation of effectiveness of the treatment. SETTING: Operative Unit of General and Thoracic Surgery, Department of Surgical, Anatomical and Oncological Disciplines. Policlinico, University of Palermo. INTERVENTIONS: Thoracotomic diverticulectomy + esophageal extramucosal myotomy + antireflux procedure. RESULTS: Resolution of syntomatology. Negative the follow up. CONCLUSIONS: ED is the epiphenomenon of esophageal motor disfunctions. The surgical procedure is based on their comprehension and on the study of this factors.

[Scrotal angiomyofibroblastoma. Report of a case]. / Angiomiofibroblastoma a localizzazione scrotale. Report di un caso.

OBJECTIVE: The authors report their experience about the treatment of a rare case of scrotal angiomyofibroblastoma (AMF). DESIGN: Report of 1 cases; evaluation of effectiveness of surgical treatment. SETTING: Operative Unit of General and Thoracic Surgery, Department of Surgical, Anatomical and Oncological Disciplines. Policlinico, University of Palermo. INTERVENTIONS: The patient was submitted to curative and radical surgery. RESULTS: Resolution of the pathology. Follow up (6 months) negative. CONCLUSIONS: The AMF's treatment is surgical and localized. Is important the complete preoperative evaluation.

[Multiple choledocholithiasis]. / Calcolosi multipla della VBP ("empierrement").

OBJECTIVE: The authors report their experience about the endoscopic (ERCP) treatment of multiple choledocholithiasis. DESIGN: Report of 5 cases; evaluation of mortality and effectiveness of the treatment. SETTING: Operative Unit of General and Thoracic Surgery, Department of Surgical, Anatomical and Oncological Disciplines. Policlinico, University of Palermo. INTERVENTIONS: ERCP + ES + clearance of bile duct stones in all 5 patients. RESULTS: 100% successful. CONCLUSION: ERCP is choice treatment of multiple choledocholithiasis, only in well experienced teams.