Domenico Pourmolkara

Background: Spread through air spaces (STAS) consists of micropapillary clusters, solid nests, and/or single neoplastic cells into the air spaces of the lung parenchyma beyond the edge of the primary tumor. To date, its prognostic role in patients with lung adenocarcinoma is crucial, resulting in an independent negative factor for both overall survival (OS) and disease-free survival (DFS). The study aims to assess the prognostic impact of STAS in patients with lung adenocarcinoma undergoing curative resection. Methods: A retrospective, observational single-center study enrolling consecutive patients who underwent lung resections for adenocarcinoma from January 2018 to December 2023 was performed. OS and DFS were analyzed. Univariable and multivariable Cox proportional hazard models, along with the inverse probability of treatment weight–adjusted Kaplan–Meier curves, were used to evaluate the prognostic impact of STAS. A logistic regression model was used to estimate the odds ratios and 95%-confidence intervals for clinical variables associated with the STAS status. Results: In total, 329 patients were enrolled, and two different groups were defined (STAS-present: 30; STAS-absent: 299). No statistically significant differences were observed in OS and DFS when comparing patients according to their STAS status. Conversely, STAS-present patients were more frequently associated with pN2-nodal involvement (22.7% vs. 77.3%, p = 0.022), stage IIIA disease (p = 0.003), and the presence of an adenocarcinoma-predominant micropapillary-pattern (p < 0.001). Female patients were associated with better outcomes than male patients in survival analysis, while stage IIIA disease and micropapillary-pattern emerged as statistically significant after the logistic regression. Conclusions: Our study provides relevant information on the relationship between STAS and clinicopathological characteristics, demonstrating its potential aggressive histological feature, due to the significant correlation with stage IIIA disease, and the adenocarcinoma micropapillary pattern. Therefore, STAS may identify a subgroup of patients in whom the prognostic implications should be further investigated.

Background: Contralateral recurrence following surgically treated primary spontaneous pneumothorax represents clinical concern yet remains poorly understood. This study aims to expand the current understanding by evaluating a large, multicenter cohort over a 10-year period and to determine the true incidence of contralateral recurrence assessing the potential role of clinical factors in risk stratification. Methods: A total of 479 patients surgically treated for PSP (2012–2024) across three Italian high-volume centers were retrospectively reviewed. Secondary pneumothorax, patients 2) test, while the association with continuous variables was evaluated using the t-test. Time to recurrence was analyzed using Kaplan–Meier survival curves. Variables with a p-value < 0.05 were considered statistically significant. Results: We identified 59 patients who experienced contralateral recurrence: 45 were males, the mean age was 26.66 ± 12.32 and the mean BMI was 22.00 ± 2.92; only 13 were active smokers. Age (p < 0.001) and smoking history (p = 0.029) were significantly associated with contralateral recurrence in univariate analysis, though these were not confirmed in multivariate analysis. Among the cohort of recurrence, 53 patients only had a recurrence on the contralateral side, with a median time to recurrence of 139 days. The incidence rate ratio (IRR) of recurrence for patients with a mean age of p = 0.25), sex (p = 0.67), or smoking (p = 0.59) on the time to recurrence on the other side was observed through Kaplan–Meier analysis. The peak incidence for the first episode of PNX surgically treated and contralateral recurrence was observed in October, November and January. Conclusions: This study highlights a 12% contralateral recurrence rate after PSP surgery. Younger age is associated with earlier contralateral recurrence. Seasonality may influence recurrence patterns. Further studies should explore underlying mechanisms and preventive strategies.

Objectives: Central airway obstruction (CAO) caused by malignant tumors may necessitate combined and prompt treatment. The aim is to recanalize and stabilize the airways as palliation. We present our multicentric experience managing malignant CAO through the placement of Y-shaped self-expanding covered metallic or silicone trachea-bronchial stents. Methods: This retrospective study includes patients who underwent placement of Y-shaped stents from 2002 to 2024 across six different centers in Italy and Great Britain. We evaluated outcomes related to the feasibility and safety of the procedure, as well as the palliation of dyspnoea on the Modified Borg Scale of Dyspnoea. Results: Eighty patients (56.2% female) with a mean age of 64.8 ± 9.6 years were included in the study. Successful placement was achieved in 76 (95%) cases, with no cases of intraoperative mortality. The mean procedure time was 36.64 ± 15.7 min. The complications noted included: 7 (8.7%) cases of periprocedural clinical complications and 7 (8.7%) patients requiring intensive care unit admittance after the procedure. Fifty patients (78.1%) received cancer treatment following the procedure. The mean dyspnoea score on the Borg scale decreased from 7.78 ± 0.98 to 4.02 ± 2.2 (p < 0.05). Conclusions: The placement of metal or silicone Y-shaped stents is a feasible and safe procedure for the palliative treatment of dyspnoea in patients with malignant stenosis of the trachea and main bronchi. Stabilizing the airway also enables these patients to access cancer treatments.

Background: Oesophageal perforation (OP) is a life-threatening condition requiring prompt diagnosis and treatment. Mortality is influenced by several factors, such as aetiology, defect location, comorbidities, age, and delays in treatment. This study reviews patients with OP undergoing surgery, analysing mortality risks and the impact of timing on surgical outcomes. Methods: Medical records of 45 patients surgically treated for OP across three tertiary centers were analysed. Results: Of the 45 patients, 31 were male (68.88%) and 14 were female (31.11%), with a mean age of 66.00 ± 17.75 years. Pre-operative CT was performed in all patients, and 18 (40%) underwent oesophagogastroduodenoscopy. As many as 25 patients (55.55%) presented within 24 h, 10 (22.22%) within 24–72 h, and 10 (22.22%) after 72 h. Symptoms included pain, vomiting, fever, dysphagia, and subcutaneous emphysema. Foreign body ingestion and Boerhaave’s syndrome were the leading causes (33.33% each), followed by caustic ingestion (17.77%) and iatrogenic and traumatic cases. Treatments included primary repair, debridement, oesophagectomy, and oesophagogastrectomy. Primary repair was performed in 22 cases (48.88%), and muscle flaps reinforced 11 of these. Direct repair showed the highest success rate when performed within 24 h. Thirty patients (66.66%) experienced complications, including respiratory failure, oesophagopleural fistula, and sub-stenosis. The hospital stay average was 36.34 ± 35.03 days. Nine patients underwent same-session/two-stage gastroplasty or retrosternal coloplasty for reconstruction, with complications including stenosis and leaks. Six patients (13.33%) died within the first 24 h after surgery, primarily due to severe comorbidities (three (50%) were octogenarians). Conclusions: OP is a life-threatening condition with high mortality. Primary repair is the preferred treatment. Oesophagectomy and gastrectomy are reserved for extensive lesions. Muscle flaps can reinforce sutures in cervical and thoracic perforations. Mortality is mainly influenced by the severity of the patient’s clinical picture and comorbidities, rather than by time and type of treatment.

Background: Primary and secondary tumors of the abdominal lower third of the bony thorax are relatively rare. Therefore, indications and techniques for chest wall reconstructions in this area are not well defined. Methods: The techniques for reconstructing basal chest wall defects using the diaphragm are described. Indications for phrenoplasty are limited to reconstruction after full-thickness resection of at least two of the last four ribs in the midaxillary line. The diaphragm can be used for reconstructive purposes both if it is intact and if it is partially involved in the resection of the chest wall. Results: At our institution, the abovementioned reconstructive technique was successfully performed in five patients with an uneventful post-operative course. Conclusions: The main advantages of these methods are the use of promptly available, high-quality autologous tissue and the exclusion of the pleural space from the defect area, thus transforming a thoracic defect into an abdominal one. The disadvantage is a variable reduction in the volume of the hemithorax. These techniques could be compared with other reconstruction techniques using pre-/post-operative respiratory functional tests.

Schwannoma is a benign tumour originating from the Schwann cells. Patients can remain asymptomatic, as the onset of symptoms usually depends on the compressive effect on adjacent organs; dimensional and morphological variability increase the time for the diagnosis. We report the case of a successful surgical resection, performed by video-assisted thoracoscopic surgery, on a patient with radiological evidence of a massive cystic intrathoracic neoformation, histologically revealed to be a peculiar Schwannoma.

Napolitano AG, et al. Ann Surg Treat Res. 2023 Aug;105(2):76-81. https://doi.org/10.4174/astr.2023.105.2.76