End-colostomy parastomal hernia repair: a systematic review on laparoscopic and robotic approaches

INTRODUCTION

Parastomal hernia (PSH) is the most common and challenging complication after stoma creation, with an estimated 50% incidence 2 years after the index surgery. Mesh repair is the treatment of choice. Laparoscopic and/or robotic approaches allow acceptable outcomes.

MATERIALS AND METHODS

A systematic literature review from January 2012 to November 2023 was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. Embase, PubMed, and Scopus search were performed to select articles dealing with minimally invasive surgical treatment for PSH after end colostomy.

RESULTS

603 studies were found, and 24 were chosen. When compared to open surgery, laparoscopy showed decreased postoperative complications and recurrence. The main laparoscopic approaches are the keyhole (KH), the Sugarbaker (SB), and the sandwich technique. Continuous improvement in surgery, mesh technology, and surgeons' expertise led to an amelioration of surgical outcome and recurrence rate after repair. Recent studies showed comparable outcomes for SB and KH techniques, while novel surgical approaches have been proposed in an attempt to further increase the operative and long-term results. Reports on PSH robotic repairs are scarce and describe small series results, suggesting a role of the initial learning curve as a risk factor for complications.

CONCLUSION

End-colostomy PSH surgical repair still represents a challenge for surgeons. Recent evidence has not shown a significant advantage in postoperative complications and recurrence with a specific repair among SB, KH, and sandwich technique. The paucity of data on robotic surgery does not allow to draw definitive conclusion. Further primary, multicentric, and larger cohort studies are needed.

The use of mixed reality in the preoperative planning of colorectal surgery: Preliminary experience with a narrative review

New advanced technologies have recently been developed and preliminarily applied to surgery, including virtual reality (VR), augmented reality (AR) and mixed reality (MR). We retrospectively review all colorectal cases in which we used holographic 3D reconstruction from February 2020 to December 2022. This innovative approach was used to identify vascular anomalies, pinpoint tumor locations, evaluate infiltration into neighboring organs and devise surgical plans for both training and educating trainee assistants. We have also provided a state-of-the-art analysis, briefly highlighting what has been stated by the scientific literature to date. VR facilitates training and anatomical assessments, while AR enhances training and laparoscopic performance evaluations. MR, powered by HoloLens, enriches anatomic recognition, navigation, and visualization. Successful implementation was observed in 10 colorectal cancer cases, showcasing the effectiveness of MR in improving preoperative planning and its intraoperative application. This technology holds significant promise for advancing colorectal surgery by elevating safety and reliability standards.

Case Report: Recurrent colonic metastasis from lung cancer-diagnostic pitfalls and therapeutic challenge of a peculiar case

Lung cancer (LC) mortality exceeds 20%, and detecting metastases from LC is becoming a challenging step in understanding the real prognostic role of specific localization. We report a case of a patient with lung metastasis to the colon with local recurrence at the anastomosis after radical resection for metastasis. In both cases, the diagnosis was on oncological follow-up, and surgery was offered in consideration of reasonable life expectancy, good control of LC, and high risk of intestinal occlusion. A 67-year-old male, with a history of LC 18 months ago, was referred to our surgical unit after a positron emission tomography CT total body, where an area of intense glucose metabolism (SUV max: 35.6) at the hepatic colic flexure was reported. A colonoscopy revealed an ulcerated, bleeding large neoplasm distally to hepatic flexure, almost causing resulting total occlusion. Histologic examination revealed a tumor with complete wall thickness infiltration, which appears extensively ulcerated, from poorly differentiated squamous carcinoma (G3), not keratinizing, with growth in large solid nests, often centered by central necrosis. Two of the 30 isolated lymph nodes were metastatic. The omental flap and resection margins were free from infiltration. The malignant cells exhibited strong positive immunoreactivity only for p40. The features supported metastatic squamous carcinoma of lung origin rather than primary colorectal adenocarcinoma. After 8 months from surgery, intense Fluorodeoxyglucose (FDG) uptake of tissue was confirmed in the transverse colon. Colonoscopy evidenced an ulcerated substenotic area that involved ileocolic anastomosis on both sides. Reoperation consisted of radical resection of ileocolic anastomosis with local lymphadenectomy and ileotransverse anastomosis. The second histologic examination also revealed poorly differentiated squamous carcinoma (G3), not keratinizing, with positive immunoreactivity only for p40, suggesting the origin of LC. This case report confirmed that the possibility of colonic secondary disease should be part of the differential diagnosis in asymptomatic patients and those with a history of LC diagnosis. In addition, relapse of colonic metastasis is infrequent but should be considered during follow-up of LC. More studies on colonic metastasis of LC are required to better understand the clinical features and outcomes.

ERas and COLorectal endoscopic surgery: an Italian society for endoscopic surgery and new technologies (SICE) national report

Background

Several reports demonstrated a strong association between the level of adherence to the protocol and improved clinical outcomes after surgery. However, it is difficult to obtain full adherence to the protocol into clinical practice and has still not been identified the threshold beyond which improved functional results can be reached.

Methods

The ERCOLE (ERas and COLorectal Endoscopic surgery) study was as a cohort, prospective, multi-centre national study evaluating the association between adherence to ERAS items and clinical outcomes after minimally invasive colorectal surgery. The primary endpoint was to associate the percentage of ERAS adherence to functional recovery after minimally invasive colorectal cancer surgery. The secondary endpoints of the study was to validate safety of the ERAS programme evaluating complications’ occurrence according to Clavien-Dindo classification and to evaluate the compliance of the Italian surgeons to each ERAS item.

Results

1138 patients were included. Adherence to the ERAS protocol was full only in 101 patients (8.9%), > 75% of the ERAS items in 736 (64.7%) and > 50% in 1127 (99%). Adherence to > 75% was associated with a better functional recovery with 90.2 ± 98.8 vs 95.9 ± 33.4 h (p = 0.003). At difference, full adherence to the ERAS components 91.7 ± 22.1 vs 92.2 ± 31.6 h (p = 0.8) was not associated with better recovery.

Conclusions

Our results were encouraging to affirm that adherence to the ERAS program up to 75% could be considered satisfactory to get the goal. Our study could be considered a call to simplify the ERAS protocol facilitating its penetrance into clinical practice.

Does Time Matter in Deficit of Calcium after Total Thyroidectomy in Subjects with Previous Bariatric Surgery?

Background: Hypoparathyroidism-related hypocalcemia is a common complication after total thyroidectomy (TT), particularly if there is a history of prior bariatric surgery. However, it is still unknown if it is the surgery timing or the type of bariatric intervention that increases the risk of developing this complication. Methods: We compared the risk of hypocalcemia (serum calcium levels < 8 mg/dL) and hypoparathyroidism (both transient and permanent) between patients with restrictive procedures (LSG and GB) and patients without a history of obesity surgery in the immediate post-operative period and after 12 months. Hypoparathyroidism was considered permanent if the plasma parathyroid hormone (PTH) levels at 6 months were less than 15 pg/mL and the patient still required oral calcium (calcium carbonate) and vitamin D supplementation, in addition to the supplements that were taken routinely before thyroidectomy. Results: From the 96 patients who underwent TT, 50% had a history of bariatric surgery: 36 LSG and 12 GB. The risk of hypocalcemia was similar in patients with a history of restrictive procedures (31.35%) and in controls (25%) (p = 0.49). Furthermore, hypocalcemia risk was similar between patients with a history of LSG (30.5%) and GB (33%) (p = 0.85). The prevalences of transient and permanent hypoparathyroidism were similar between patients with a history of restrictive procedures and in controls; similarly, no differences were detected between subjects undergoing LSG and GB. Conclusions: Restrictive bariatric surgery (LSG and GB) is not a risk factor for post-thyroidectomy hypocalcemia and hypoparathyroidism and thus did not require a different perioperative supplementation protocol compared to subjects without history of bariatric surgery undergoing TT.

Impact of SARS-CoV-2 Lockdown on the Preoperative Care Program of Patients Scheduled for Bariatric Surgery

Objectives: To evaluate the effect of the SARS-CoV-2 lockdown on dietary habits, body weight, left hepatic lobe volume, use of micronutrient supplements, micronutrient status, frequency of physical activity, and evolution of comorbidities in patients undergoing preoperative care for BS. Materials and Methods: We prospectively evaluated the dietary habits (including use of micronutrient supplements and frequency of physical activity) of 36 patients who were candidates for BS from March to May 2020; 7-day food dietary records, body weight, left hepatic lobe volume by ultrasound, micronutrient status, and evolution of comorbidities were assessed. Results: All patients completed the study. Of the participants, 44.4% (16/36), 47.2% (17/36), and 27.8% (10/36) followed the preoperative indications for vegetables, fruits, and legumes, respectively, whereas over 50% did not. Furthermore, 30.6% (11/36) and 55.6% (20/36) of participants followed the prescribed recommendations for carbohydrates/sweets products and alcohol, respectively. A total of 61.1% (22/36) of participants experienced new foods and new culinary preparations. In addition, at the time of the study, we found that only 11.1% (4/36) were engaged in prescribed physical activity and only 36.1% (13/36) were taking prescribed micronutrient supplements. Compared to the initial weight, we observed an increased body weight and body mass index (+4.9%, p = 0.115; +1.89%, p = 0.0692, respectively), and no improvement in left hepatic lobe volume, micronutrient status, or comorbidities was recorded for any patient in the anamnesis. Conclusions: Lockdown determined by the SARS-CoV-2 pandemic has negatively affected the preoperative program of BS candidates, resulting in a postponement to the resumption of bariatric surgical activity.

Gastroesophageal Reflux After Sleeve Gastrectomy: New Onset and Effect on Symptoms on a Prospective Evaluation

BACKGROUND

Gastroesophageal reflux disease (GERD) is present in half of the obese candidates for bariatric surgery. Variability of symptoms and new onset of GERD are often debated. Prior studies have demonstrated that sleeve gastrectomy (SG) is associated with significant weight loss.

OBJECTIVES

We prospectively evaluated the effect of a standardized SG technique on GERD symptoms in 104 patients.

METHODS

All patients were surveyed on the presence of heartburn and/or regurgitation with a specific questionnaire (GERD-HRQL). Esophagogastroduodenoscopy (EGDS) was performed in the preoperative phase and after 12 months.

RESULTS

All patients completed a 12-month follow-up. In the preoperative phase, 27.9% presented GERD symptoms (29 cases), while endoscopic findings were observed in 19.2% (20 cases). Preoperative GERD was ameliorated/solved in 65.5% of cases. The mean value of the GERD-HRQL score was significantly lower in postoperative evaluation (33.8 vs 19.4; p < 0.05). At 12-month EGDS, esophagitis was present in 13.5%, and GERD-HRQL symptoms were recorded in 10.6%. Considering patients treated until December 2015 (group 1, 44 patients) and those treated after December 2015 (group 2, 60 patients), all new clinical and endoscopic GERD diagnoses were observed in group 1; the majority of unsolved GERD cases was present in Ggoup 1 (8 vs 2; p < 0.05).

CONCLUSION

Significant amelioration on preoperative GERD was confirmed after SG. New characteristics of reflux are emerging in SG patients, often asymptomatic. Standardization is necessary to define the real effect of SG on GERD.

Long-Term Results of the Mediterranean Diet After Sleeve Gastrectomy

BACKGROUND

To assess dietary habits in a cohort of patients at minimum follow-up of 4 years after sleeve gastrectomy (SG) by comparing their dietary records to the Italian Mediterranean diet (IMD) recommendations.

METHODS

We prospectively evaluated in 74 patients who had the SG in 2014 dietary habits by a 7-day food dietary records, weight and micronutrient status, evolution of comorbidities, use of micronutrient supplements, and frequency of physical activity.

RESULTS

The IMD recommendations in terms of daily/weekly portions of fruits, vegetables, and complex carbohydrates were followed by 40.5%, 35.1%, and 40.5% of the participants, respectively. Concerning milk/dairy, olive oil, poultry, fish/shellfish, eggs, legumes, processed/red meat, and cold cuts, 54.1%, 85.1%, 44.5%, 75.7%, 67.6%, 35.1%, 87.8%, and 55.4% of the participants, respectively, followed the IMD recommendations. Weight regain appeared in 37.8% of participants, while physical activity was reported by the 54.0% of them. Deficiencies of vitamin B12, vitamin D, folate, iron, and anemia were found present in 6.8%, 8.1%, 24.3%, 33.8%, and 59.5% of the participants, respectively, and 18.9% of them were found to take micronutrient supplements. Improvement/remission of type 2 diabetes, hypertension, or obstructive sleep apnea was 73.3%, 64.7%, and 100% respectively.

CONCLUSIONS

In this prospective cohort with a minimum follow-up of 4 years after SG, we found an inadequate intake of fruit, vegetables, poultry, and complex carbohydrates according to the IMD recommendations; the frequency of physical activity and the use of micronutrients supplements were also inadequate. This may contribute to weight regain and micronutrient deficiencies in the long term.

Clinical factors correlated with vitamin D deficiency in patients with obesity scheduled for bariatric surgery: A single center experience

We aim to assess the prevalence of vitamin D deficiency (VDD) in patients scheduled for bariatric surgery (BS), and to identify factors that might be associated with VDD. We conducted a cross-sectional observational study involving all consecutive patients scheduled for BS from 2017 to 2019. The exclusion criteria were missing data for vitamin D levels, intake of vitamin D supplements in the 3 months prior to serum vitamin D determination, and renal insufficiency. A total of 206 patients (mean age and body mass index [BMI] of 34.9 ± 10.7 years, and 44.3 ± 6.99 kg/m², respectively) met the inclusion criteria and were enrolled for data analysis. VDD (<19.9 ng/mL), severe VDD (<10 ng/mL), and vitamin D insufficiency (20-29.9 ng/mL) were present in 68.8 %, 12.5 %, and 31.2 % of patients, respectively. A significant inverse correlation was found between vitamin D levels and initial BMI, parathyroid hormone, and homeostatic model assessment of insulin resistance (r = -0.280, p < 0.05; r = -0.407, p = 0.038; r = -0.445, p = 0.005), respectively. VDD was significantly more prevalent in patients with higher BMI [-0.413 ± 0.12, CI95 % (-0.659; -0.167), p = 0.006], whereas no significant association between hypertension [-1.005 ± 1.65, CI95 % (-4.338; 2.326), p = 0.001], and diabetes type 2 (T2D) [-0.44 ± 2.20, CI95 % (-4.876; 3.986), p = 0.841] was found. We observed significant association between female sex and levels of vitamin D [6.69 ± 2.31, CI95 % (2.06; 11.33), p = 0.006]. The present study shows that in patients scheduled for BS, VDD deficiency is common and was associated with higher BMI, and female sex.

Characterization of the Duodenal Mucosal Microbiome in Obese Adult Subjects by 16S rRNA Sequencing

The gut microbiota may have an impact on obesity. To date, the majority of studies in obese patients reported microbiota composition in stool samples. The aim of this study was to investigate the duodenal mucosa dysbiosis in adult obese individuals from Campania, a region in Italy with a very high percentage of obese people, to highlight microbial taxa likely associated with obesity. Duodenum biopsies were taken during upper gastrointestinal endoscopy in 19 obese (OB) and 16 lean control subjects (CO) and microbiome studied by 16S rRNA gene sequencing. Duodenal microbiome in our groups consisted of six phyla: Proteobacteria, Firmicutes, Actinobacteria, Fusobacteria, Bacteroidetes and Acidobacteria. Proteobacteria (51.1% vs. 40.1%) and Firmicutes (33.6% vs. 44.9%) were significantly (p < 0.05) more and less abundant in OB compared with CO, respectively. Oribacterium asaccharolyticum, Atopobium parvulum and Fusobacterium nucleatum were reduced (p < 0.01) and Pseudomonadales were increased (p < 0.05) in OB compared with CO. Receiver operating characteristic curve analysis showed Atopobium and Oribacterium genera able to discriminate with accuracy (power = 75% and 78%, respectively) OB from CO. In conclusion, increased Proteobacteria and decreased Firmicutes (Lachnospiraceae) characterized the duodenal microbiome of obese subjects. These data direct to further studies to evaluate the functional role of the dysbiotic-obese-associated signature.

Omentopexy with Glubran®2 for reducing complications after laparoscopic sleeve gastrectomy: results of a randomized controlled study

Background

Gastric fistulas, bleeding, and strictures are commonly reported after laparoscopic sleeve gastrectomy (LSG), that increase morbidity and hospital stay and may put the patient’s life at risk. We report our prospective evaluation of application of synthetic sealant, a modified cyanoacrylate (Glubran®2), on suture rime, associated with omentopexy, to identify results on LSG-related complications.

Methods

Patients were enrolled for LSG by two Bariatric Centers, with high-level activity volume. Intraoperative recorded parameters were: operative time, estimated intraoperative bleeding, conversion rate. We prospectively evaluated the presence of early complications after LSG during the follow up period. Overall complications were analyzed. Perioperative data and weight loss were also evaluated. A control group was identified for the study.

Results

Group A (treated with omentopexy with Glubran®2) included 96 cases. Control group included 90 consecutive patients. There were no differences among group in terms of age, sex and Body Mass Index (BMI). No patient was lost to follow-up for both groups. Overall complication rate was significantly reduced in Group A. Mean operative time and estimated bleeding did not differ from control group. We observed three postoperative leaks in Group B, while no case in Group A (not statistical significancy). We did not observe any mortality, neither reoperation. Weight loss of the cohort was similar among groups. In our series, no leaks occurred applying omentopexy with Glubran®2.

Conclusion

Our experience of omentopexy with a modified cyanoacrylate sealant may lead to a standardized and reproducible approach that can be safeguard for long LSG-suture rime.

Trial registration

Retrospective registration on clinicaltrials.gov PRS, with TRN NCT03833232 (14/02/2019).

Abdominoplasty after bariatric surgery: comparison of three different techniques

BACKGROUND

Abdominoplasty after massive weight loss is not a cosmetic procedure. The aim of this study was to compare three different techniques for postbariatric abdominoplasty.

METHODS

All postbariatric patients that have undergone abdominoplasty from January 2013 to December 2016 were included in the study. Patients were divided into 3 groups: subjects who underwent standard procedure were allocated ingroup A; those cases performed using a synthetic glue were assigned to group B; cases performed with an energy device were inserted in group C. Operative time, length of stay and complications were recorded.

RESULTS

Seventy-one abdominoplasties were performed in the selected period. Mean operative time was shorter (P<0.01) in group C (94.3±2.7 minutes) than in group A (112.1±16.8 minutes) and in group B (121±13.2 minutes). Mean length of stay was significantly reduced (P<0.01) in group C (2.4±0.7) when compared to group A (3.5±0.6 days) and group B (3.1±0.5 days). Bleeding occurred in 21 (29.5%) patients (15 in group A, 4 in groupB, 3 in group C; P<0.01). Seroma was detected in 22(30.9%) subjects (14 in group A, 2in group B, 6 in group C; P<0.01). Wound dehiscence and umbilical necrosis were recorded in 7 (9.9%) and 9 (12.6%) patients respectively, without statistical differences.

CONCLUSIONS

Both synthetic glue and energy device improve outcomes of postbariatric abdominoplasties. The glue reduces rates of bleeding and seroma. The energy deviceimproves intraoperative hemostasis and shortens operative time.

Evaluation of anti-Müller hormone AMH levels in obese women after sleeve gastrectomy

INTRODUCTION

The link between obesity epidemic in fertile age and fertility reduction, in relation with BMI increase, has been demonstrated. An inverse proportionality between BMI and anti-Müller hormone (AMH) has been investigated. This hormone is strictly related to ovarian function. It has been demonstrated that it is significantly decreased in obese women.

SCOPE

The aim of this study was evaluation of AMH levels in 53 obesity women with BMI >35, at 3 and 6 months after laparoscopic sleeve gastrectomy (LSG). Specific evaluation of comorbidities and of gynecological effects of weight loss was also evaluated.

RESULTS

Cohort of 53 women was considered, treated with LSG. A progressive increase of AMH levels after LSG was confirmed, with statistically significant results at followup of 6 months. In these patients, we also observed an improvement in the menstrual cycle and resolution of dysmenorrhea. All considered comorbidities were ameliorated at both followup.

CONCLUSION

LSG determined a significant increase of AMH level in women, at early followup, with a comprehensive amelioration of gynecological status. Larger cohorts and a better evaluation of ovarian function after LSG will lead to more powerful results of the effect of weight loss on women.

Metabolic effects, safety, and acceptability of very low-calorie ketogenic dietetic scheme on candidates for bariatric surgery

BACKGROUND

Previous studies have demonstrated significant advantages from a preoperative dietetic regimen for candidates to bariatric procedure.

OBJECTIVES

Evaluation of safety, efficacy, and acceptability of a very low-calorie ketogenic diet in patients before bariatric surgery.

SETTING

University Hospital.

METHODS

A standardized 30-day sequential preoperative diet regimen has been analyzed, optimizing metabolic response with gradual carbohydrate reintroduction. Patients were given a dedicated KetoStationkit, for use during the first 10 days of the scheme, followed by a hypocaloric scheme for 20 days. The study group underwent routine laboratory tests and anthropometric measurements (percent weight loss, body mass index, waist circumference) at enrollment (T0), after 10 days (T1), and after 30 days (T2). Ketone body levels were measured in the plasma and urine.

RESULTS

Between January 2015 and September 2015, 119 patients were included in the study. Mean body mass index was 41.5 ± 7.6 kg/m². Weight, body mass index, and waist circumference at T0 and T1, T0 and T2, and T1 and T2 decreased significantly (P<.05). A bioelectrical impedance assay determined a significant reduction in visceral fat at T1 and T2. We observed a significant (P<.05) improvement in several clinical parameters, including glycemic and lipid profile parameters. We also observed a mean 30% reduction in liver volume. The majority of patients declared satisfied or very satisfied. The adverse effects were mild, of short duration, and not clinically relevant.

CONCLUSION

Our results confirm the acceptability, safety, and significant advantage of a very low-calorie ketogenic diet for reducing weight and liver volume of patients in preparation for bariatric surgery.

Follicular adenoma in ectopic thyroid. A case-report

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Ectopic thyroid is thyroidal tissue located far from its anatomic place.

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A patient under our observation displayed left submandibular swelling.

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The FNAC test report described a follicular adenoma.

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Based on the FNAC diagnosis, we surgically removed the mass.

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The post-operative follow-up was uneventful.

Introduction

The term ectopic thyroid refers to the presence of thyroid tissue located far from its usual anatomic placement and with no vascular connection to the main gland. The presence of swelling in atypical locations is diagnostically differentiated from other pathologies like pleomorphic adenoma or carcinoma, inflammatory lesions like sialadenitis, neurogenic tumors, paraganglioma, fibrolipoma and lymphadenopaties of diverse etiologies.

Presentation of case

Here we present the case of a submandibular ectopic thyroid in a 67 year old woman. She came to our attention for a left submandibular swelling. The anamnesis did not show related pathologies, as well as blood tests. Diagnostic image studies and a FNAC were performed. The mass was surgically removed and histopatology showed a follicular adenoma in the contest of the capsulated lesion.

Discussion

It is important to not underestimate these types of lesions and procede with hematochemical, instrumental tests and above all surgery that can eliminate any diagnostic uncertainty and on the whole be therapeutic.

Conclusion

It should not be forgotten that ectopic thyroid tissue can be a site for adenoma or papillary carcinoma and thus any watch and wait strategy should be avoided.

Hypoparathyroidism after total thyroidectomy: prospective evaluation and relation with early hypocalcemia

AIM

Definitive hypoparathyrodism (hypo-PTH) represents one of the most dangerous complication after total thyroidectomy. Partial or total lesion or accidental removal of parathyroid glands is an unpredictable adverse event, although real incidence is not well defined, such as management of this deficit. We started a prospective evaluation of patients treated with total thyroidectomy in our centre, to identify incidence of hypo-PTH, symptomatic or not, in relation to incidence of early postoperative hypocalcemia in our experience.

METHODS

We prospectively evaluated 177 patients treated for benign and malign pathology, measuring calcium before surgery and calcium and PTH at least three months after surgery. Postoperative hypocalcemia was observed in 37.3% of cases. Eight patients (4.5% of cohort) presented low level of PTH, at mean follow-up of 9.1 months. Positive predictive value for postoperative hypocalcemia was 12.1%, while negative predictive was 95.4%; confirming high sensitivity (100%) and low specificity (65.4%) for detecting hypo-PTH.

DISCUSSION

All patients with late hypo-PTH presented hypocalcemia on early analysis, while no case with normal postoperative calcemia accounted with hypo-PTH: this may indicate calcemia as valid prognostic factor of good gland production, when is in the range. Moreover, isolated analysis is too limited to determine real predictability.

CONCLUSION

Technical standardization represents the best method for prevention of hypo-PTH. Early hypocalcemia is a prognostic factor, even with a low specificity, of deficit of PTH-production. This observation must be related to other known prognostic factors. Postoperative normal calcemia should be a positive prognostic factor of an acceptable PTHfunction, supported by large cohorts.

KEY WORDS

Hypocalcemia, Parathormone, Thyroidectomy.

Surgical approach to TIR3 cytology class A prospective evaluation

AIM

Fine-needle aspiration (FNA) has proven to be a safe and reliable method of investigation of thyroid lesions. Referencing to European classification, the associated risk of malignancy for TIR3, category reserved for aspirates that contain architectural and/or nuclear atypia, is variable in such studies. Aims of study were evaluating safety of surgical approach, assessing perioperative parameters surgically related, and estimating neoplastic rate for TIR3 group.

MATERIAL AND METHODS

A prospective evaluation of all TIR3 submitted to thyroidectomy was conducted by assessing histopatohologic results between January 2005 and December 2012, considering two categories, positive (neoplastic) and negative (not neoplastic) group. Intraoperative and complication rate was analyzed on TIR3 population.

RESULTS

A total of 1514 total thyroidectomy was performed from 2005 to 2012: a total of 148 cases was considered on TIR3 group. Positive cases amounted to 64 (43.2%), 29 of which were carcinoma (19.6% of total population) and 35 of which were adenoma, while negative cases amounted to 84 (56.8%). Sensitivity and specificity of TIR3 as neoplastic screening was 43.2% and 82.1%. A total of 32 linfectomies was performed (21.6% of group). Positive group presented a significant lower mean age than negative group (42.1 vs 56.2 years)

CONCLUSIONS

TIR3 group represents a various category, with probably different malignancy risk. Our results and neoplasms rate confirmed that surgical option should be gold standard, in order to define atypical pattern and reduce delayed diagnoses. Choice of a second FNA or a imaging monitoring should be adopted for specific condition.

KEY WORDS

Fine-needle aspiration, Thyroidectomy, TIR3, Thyroid cancer.

Gastric emptying after sleeve gastrectomy: statistical evidence of a controlled prospective study with gastric scintigraphy

AIM

Laparoscopic sleeve gastrectomy (LSG) is a stand-alone bariatric procedure, its feasibility and efficacy being confirmed by long-term data. The effect of the procedure is believed to be based on the gastric restriction and reduction of ghrelin. Nevertheless it remains still controversial the role of LSG on gastric emptying and the impact that this may have on weight loss outcomes. Our aim is to assess gastric emptying after LSG using gastric scintigraphy.

METHODS

For this prospective randomized study, 45 patients undergoing LSG at our Centre for the Multidisciplinary Treatment of Severe Obesity from April 2009 to April 2011 were enrolled and observed prospectively (Group A). The inclusion criteria followed the guidelines for bariatric surgery. All patients performed gastric emptying scintigraphy through a standard semisolid meal (250 kcal), marked with 0.5 mCiTc 99. Group A performed the exam before (A1) and after the operation (A2). A control group (Group B) included 20 patients undergoing scintigraphic assessment for other reasons.

RESULTS

LSG was performed following a standardized technique. No complications were observed. The scintigraphic study showed a reduced half-life tracer (A1 vs. A2: 80.4±16.5 min vs. 64.3±22 min P=0.06), without a significant difference. Comparing the two groups no differences occurred before operation (B vs. A1). Gastric emptying time resulted significatively reduced in group A2 rather than in group A1 and B.

CONCLUSION

Gastric motility plays a role in the pathogenesis of obesity. Our experience suggests that LSG reduces gastric emptying time, but further studies are necessary to reach statystical significativity.

Role of bariatric surgery in early detection of renal cell carcinoma: report of two cases and review of the literature

Obesity is considered a strong risk factor for renal cell carcinoma, the most common primary renal malignant neoplasm. An association between renal cell carcinoma and obesity has been reported in numerous trials. Several potential mechanisms may be responsible for the risk of renal cell carcinoma in obese subjects. We report the cases of two patients, submitted to bariatric malabsorbtive surgery, who presented a renal clear cell carcinoma several months after the operation. The diagnosis was made by routine postoperative ultrasound examination and confirmed by computed tomography in both cases. Both were treated surgically. Our approach after diagnosis of cancer consisted in evaluation of the patient's immunological, metabolic and nutritional status to establish whether it was a case of real malnutrition or an oncological risk condition. We judged that restoration of original gastrointestinal continuity was not necessary. In the literature, we found no evidence of an association between a cancer histotype and bariatric surgery. Confirming the association between renal cell carcinoma and morbid obesity, these case reports indicate the importance of imaging control, especially with non-invasive diagnostic studies, in high-risk cancer patients, such as obese patients, to detect lesions incidentally at an early stage. After a thorough review of the literature data, we consider bariatric patients a suitable group to be assessed for an early diagnosis of various types of cancer, detectable at preoperative or postoperative screening. Weight loss and continuous instrumental exams are conditions favourable to an early diagnosis. Guidelines regarding the management of oncological patients with a history of bariatric surgery are indispensable.

Rhabdomyolysis after sleeve gastrectomy: increase in muscle enzymes does not predict fatal outcome

INTRODUCTION

Rhabdomyolysis (RML) is a clinical and biochemical syndrome caused by destruction of skeletal muscles and constitutes a complication of bariatric surgery, with an incidence near to 22%. It is accompanied by increase in serum of intracellular enzymes. Laboratory data as predictive of prognosis have been evaluated by some authors. We report a case of RML after a sleeve gastrectomy, with good prognosis despite a very extensive muscle damage and very high seric and urinary peaks of intracellular enzymes.

CASE REPORT

We describe a 34-years-old super-obese male (body mass index, 54.3 kg/m2) who underwent to laparoscopic sleeve gastrectomy. After 24 h, patient complained of pain in gluteal region, oliguria, and high levels of creatine phosphokinase that reached to 58,395 IU/l. Acute renal failure related to RML was diagnosed. Dialysis was not necessary. Ambulatorial control of renal function after dimission did not reveal a permanent damage.

CONCLUSION

RML is a biochemical syndrome recently associated with bariatric surgery. Early diagnosis is ever necessary. Laboratory data represent markers for diagnosis and prognostic indicator of renal failure. There is no clear relation between seric levels of intracellular enzymes and irreversible renal damage and RML-related mortality.

Hydatid disease of the liver: thirty years of surgical experience

Hydatid disease of the liver is a relatively frequent disease. Although the natural history is almost completely known, several complications may occur. The aim of this study was to show that radical surgical resection of the hepatic hydatid cyst is a safe and very effective technique, based on our results after 30-year experience. A review of most significant studies was carried out. We retrospectively evaluated our surgical cases. From January 1973 to December 2003 we treated 216 patients, 98 males and 118 females. Survival was compared with the Kaplan-Meier test, using log-rank analysis to compare data. Differences with a p value less than 0.05 were considered significant. A total of 279 cysts were excised. We performed pericystectomy in 122 cases, 73 of which closed. We also performed 19 atypical resections, 10 segmentectomies, 20 lobectomies and 2 percutaneous treatments. In more than 90% of cases, preoperative data collection was completed by preoperative ultrasound. The cumulative morbidity was 13%. The recurrence rate amounted to 4.3% at 5 years and 7% at 10 years: of these, 6 occurred after non-radical surgery and 2 after total pericystectomy or liver resection (p < 0.001). Technical advances and accumulated experience permit safe treatment of hepatic hydatid cysts by radical resection, with an almost zero recurrence rate, making it the treatment of choice over partial resection. The utility of percutaneous treatment remains confined to limited indications, such as laparoscopy.

Heliosphere Bag in the treatment of severe obesity: preliminary experience

BACKGROUND

Various intragastric balloons have been used in obese patients for temporary weight loss. Recently, a new balloon, the Heliosphere Bag, was proposed. In a preliminary study, we evaluated the safety and efficacy of this device.

METHODS

The Heliosphere Bag was used in 10 patients, selected according to the guidelines for obesity surgery. The manufacturer's instructions were followed in positioning the device. Heliosphere Bag positioning was performed, after diagnostic endoscopy, under unconscious sedation. After placement, the balloon was slowly inflated with 840-960 cc of air, which gives the inflated final volume of 650-700 cc of air, as the air is compressed. On the first and second post-treatment day, intravenous saline (30-35 ml/kg/d) with omeprazole (20 mg/d), ondansetron (8 mg/d) and butylscopolamine bromide (20 mg t.i.d.) were given to all patients. All patients from day 3 after placement began liquid diet and were discharged home on day 4 on a 1000 kcal diet (carbohydrate 146 g, lipid 68 g, protein 1 g/kg ideal weight). After 6 months, the Heliosphere Bag was removed. The patients were followed monthly, and complications and their treatment, post-placement symptoms, BMI and %EWL were recorded. Data were expressed as mean +/- SD.

RESULTS

From Sept-Dec 2004, 10 patients (5M/5F) underwent Heliosphere Bag placement, with age 35.2 +/- 15.7 years (17-49), BMI 43.3 +/- 8.1 kg/m(2) (35-51.2), and weight 126.8 +/- 23.7 kg (98.4-148). Heliosphere Bag positioning was quite difficult in all patients due to low pliancy and large size of the bag, causing patient discomfort. System failure at time of Heliosphere Bag positioning was observed in 5/10 patients (50%). At time of removal, the Heliosphere Bag was not found in the stomach in one patient. In 3 other patients, the balloon was found partially deflated. At the time of balloon removal after 6 months, BMI was 37.4 +/- 13.4 (28.9-42.1) and %EWL was 29.1 +/- 20.1 (9.0-57.4). BMI loss was 5.2 +/- 13.1 (1.9-11.2) and mean weight loss was 17.5 +/- 16.2 kg (5-33).

CONCLUSIONS

Although weight loss was satisfactory, this device cannot be considered an advance for the temporary treatment of morbid obesity. This balloon still has some instrumental and technical problems that need to be solved: high rate of system failure at positioning, high rate of spontaneous deflation, absence of a marker such as methylene blue, and large size with low pliability that cause significant patient discomfort.

Peroperative control of surgical infections

The overall incidence of post-surgical infection actually amount to 3-10%, in different multicentric trial, although the data may underrepresent the true incidence of such infections owing to increase of day-surgery. Antibiotic prophylaxis rapresents the first choice in the management of surgical patients, which standardization and selection can determine a real protection for all the operating time. Standardization of intraoperative procedure, considering utility of a multistep precautionary measure and the weight of these measures on post-operative stay of patients, may be an arm for control really post-operative infectious complications, according with control of sterilization's procedures and diffusion of dedicated device.