Manubriectomy made easy

Bone metastasis is the most common form of distant metastasis encountered within the breast cancer population. Surgical resection of bone metastases is a curative treatment option in patients who present with an isolated solitary lesion and no other associated disease. This decision is typically made following a multidisciplinary discussion. Patients can also be put forward for surgical excision of bone metastases following inadequate response to chemotherapy or radiotherapy.  With tumours located in the manubrium of the sternum, surgery serves not only to resect the bone metastasis but to provide suitable chest wall reconstruction. The goal of this approach is to maintain the structural and bony stability of the chest wall as well as that of associated structures, e.g. rib insertion or articulation of the shoulder girdle. A widely utilized approach involves excising the area of metastasis within the manubrium followed by implanting a bone cement prosthesis. Titanium plates are used to fix the bone prosthesis to the sternal body inferiorly and to the remainder of the manubrium superiorly.  We present a step-by-step video tutorial for performing a lower hemi-manubriectomy in a patient with triple-negative breast cancer. Our goal is to describe the fundamental principles and surgical techniques used to perform this procedure followed by the postoperative outcomes.

Right robotic-assisted hybrid diaphragm plication

Diaphragm paralysis can lead to significant dyspnoea and, in severe cases, the need for invasive ventilation. Surgical repair via diaphragm plication remains the only surgical option for these patients. Nerve transplantation and pacing have not proven to be effective alternatives. Nevertheless, diaphragm plication, whether through a thoracotomy or via minimally invasive techniques, has proven to yield high recurrence rates during the years following plication surgery. Re-exploration of recurrent cases has identified that plication relapse may be caused secondary to the elasticity of the non-plicated stretched muscle fibres. In contrast, a tendon does not possess elastic properties like those of muscle fibres and thus is not liable to expand gradually over time. We present a novel, minimally invasive technique for diaphragm plication that involves plication of a non-elastic central tendon to a fixed chest wall (central tendon fixation). Utilizing a robotic-assisted approach, our goal was to describe the techniques involved in achieving successful diaphragm plication with mid-term results (2-year follow-up).

Airborne occupational exposures associated with pulmonary sarcoidosis: a systematic review and meta-analysis

The aetiology and pathophysiology of sarcoidosis is ill defined-current hypotheses centre on complex genetic-immune-environmental interactions in an individual, triggering a granulomatous process. The aim of this systematic review is to define and describe which airborne occupational exposures (aOE) are associated with and precede a diagnosis of pulmonary sarcoidosis. The methodology adopted for the purpose was systematic review and meta-analyses of ORs for specified aOE associated with pulmonary sarcoidosis (DerSimonian Laird random effects model (pooled log estimate of OR)). Standard search terms and dual review at each stage occurred. A compendium of aOE associated with pulmonary sarcoidosis was assembled, including mineralogical studies of sarcoidosis granulomas. N=81 aOE were associated with pulmonary sarcoidosis across all study designs. Occupational silica, pesticide and mould or mildew exposures were associated with increased odds of pulmonary sarcoidosis. Occupational nickel and aluminium exposure were associated with a non-statistically significant increase in the odds of pulmonary sarcoidosis. Silica exposure associated with pulmonary sarcoidosis was reported most frequently in the compendium (n=33 studies) and was the most common mineral identified in granulomas. It was concluded that aOE to silica, pesticides and mould or mildew are associated with increased odds of pulmonary sarcoidosis. Equipoise remains concerning the association and relationship of metal dusts with pulmonary sarcoidosis.

Evaluating the use of laparoscopic-assisted gastrostomy tube feeding in children with epidermolysis bullosa: A single-center retrospective study

BACKGROUND

Nutritional management of children with epidermolysis bullosa (EB) presents multiple challenges including reduced oral intake compounded by mucosal fragility. Gastrostomy tube feeding is effective in improving nutritional status however there is limited data on the safety and tolerance of this technique in EB children. We aim to review the effectiveness and morbidity of our minimally invasive two-port laparoscopic-assisted gastrostomy (LAG) approach using Seldinger techniques with serial dilatations in children with EB.

METHODS

A retrospective, observational cohort study was conducted on all consecutive EB patients who underwent LAG tube insertion between 2009 and 2019. Patient demographics, admission details and 12-month clinical outcomes were reported.

RESULTS

32 EB patients underwent LAG placement. Median age at insertion was 7.3 (IQR ± 6.3) years, with 8 (25.0%) and 3 (9.4%) of patients also undergoing oesophageal dilatation and fundoplication, respectively. Minor complications arose in 58.1% of patients including: peri-stomal overgranulation (25.8%), gastrostomy infection (22.6%), pain (22.6%), mild gastrostomy leakage (16.1%), blockage (9.7%) and device failure (3.2%). 2 patients (6.5%) developed major complications with extensive gastrostomy site leakage. Improvements in growth were reflected in mean height Z-scores (-1.99 to -1.71). Mean weight Z-scores improved in patients aged 0-10 years (-2.30 to -1.61) and mean BMI Z-scores increased in patients more than 10 years (-2.71 to -1.46). No cases of gastrostomy-related mortality were reported.

CONCLUSION

LAG is well-tolerated in EB patients with improvements in growth and minimal morbidity 12-months post-gastrostomy insertion. An extended follow-up period is required to ascertain the long-term implications of gastrostomy feeding.

Pulmonary function test and computed tomography features during follow-up after SARS, MERS and COVID-19: a systematic review and meta-analysis

Background

The COVID-19 pandemic follows severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS) coronavirus epidemics. Some survivors of COVID-19 infection experience persistent respiratory symptoms, yet their cause and natural history remain unclear. Follow-up after SARS and MERS may provide a model for predicting the long-term pulmonary consequences of COVID-19.

Methods

This systematic review and meta-analysis aims to describe and compare the longitudinal pulmonary function test (PFT) and computed tomography (CT) features of patients recovering from SARS, MERS and COVID-19. Meta-analysis of PFT parameters (DerSimonian and Laird random-effects model) and proportion of CT features (Freeman-Tukey transformation random-effects model) were performed.

Findings

Persistent reduction in the diffusing capacity for carbon monoxide following SARS and COVID-19 infection is seen at 6 months follow-up, and 12 months after MERS. Other PFT parameters recover in this time. 6 months after SARS and COVID-19, ground-glass opacity, linear opacities and reticulation persist in over 30% of patients; honeycombing and traction dilatation are reported less often. Severe/critical COVID-19 infection leads to greater CT and PFT abnormality compared to mild/moderate infection.

Interpretation

Persistent diffusion defects suggestive of parenchymal lung injury occur after SARS, MERS and COVID-19 infection, but improve over time. After COVID-19 infection, CT features are suggestive of persistent parenchymal lung injury, in keeping with a post-COVID-19 interstitial lung syndrome. It is yet to be determined if this is a regressive or progressive disease.