Strictureplasty versus bowel resection for the surgical management of fibrostenotic Crohn's disease: a systematic review and meta-analysis.

BACKGROUND: Strictureplasty (SPX) conserves bowel length and minimizes the risk of developing short bowel syndrome in patients undergoing surgery for Crohn's disease (CD). However, SPX may be associated with a higher risk of recurrence compared with bowel resection (BR). AIM: We sought to compare morbidity and recurrence following SPX and BR in patients with fibrostenotic CD. METHODS: A systematic review was performed according to PRISMA and MOOSE guidelines. Observational studies that compared outcomes of CD patients undergoing either SPX or BR were identified. Log hazard ratios (InHR) for recurrence-free survival (RFS) and their standard errors were calculated from Kaplan-Meier plots or Cox regression models and pooled using the inverse variance method. Dichotomous variables were pooled as odds ratios (OR) using the Mantel-Haenszel method. Continuous variables were pooled as weighted mean differences. RESULTS: Twelve studies of 1026 CD patients (SPX n = 444, 43.27%; BR with or without SPX n = 582, 56.72%) were eligible for inclusion. There was an increased likelihood of disease recurrence with SPX than with BR (OR 1.61; 95% CI, 1.03, 2.52; p = 0.04; I2 = 0%). Patients who had a SPX alone had a significantly reduced RFS than those who underwent BR (HR 1.47; 95% CI, 1.08, 2.01; p = 0.02; I2 = 0%). There was no difference in morbidity between the groups (OR 0.58; 95% CI, 0.26, 1.28; p = 0.18; I2 = 0%). CONCLUSION: SPX should only be performed in those patients with Crohn's strictures that are at high risk for short bowel syndrome and intestinal failure; otherwise, BR is the favored surgical technique for the management of fibrostenotic CD.

Methamphetamine-Induced Lung Injury.

Methamphetamine is a substance of abuse that is most commonly smoked. Both regular and non-regular use can cause toxic injury to the lung parenchyma, the signs and symptoms of which are non-specific. Clinical scenarios include non-cardiac pulmonary oedema, acute respiratory distress syndrome, alveolar haemorrhage, pneumonia and pneumoconiosis. As radiological imaging is often non-specific, a positive history of methamphetamine use is the only way to reach a definite diagnosis. The use of methamphetamine is now increasing in Europe, so it is important as physicians to be aware of this differential diagnosis in patients in respiratory distress with risk factors for illicit drug use. LEARNING POINTS: A case of methamphetamine-induced lung injury with non-specific findings is described.In those presenting with respiratory symptoms and no obvious cause identified, consideration must be given to a diagnosis of drug-induced lung injury.Treatment for methamphetamine-induced lung injury is supportive, for example with oxygen supplementation, and symptoms should resolve after cessation of use; there is no evidence that steroids are of benefit.

ANCA-negative Granulomatosis with Polyangiitis: A Difficult Diagnosis.

Granulomatosis with polyangitiis (GPA) is a systemic small and medium vessel vasculitis, commonly associated with anti-neutrophil cytoplasmic antibodies (ANCAs). Presenting signs and symptoms in GPA are varied and patients may present with constitutional, non-specific symptoms, which can delay the diagnosis. Tissue biopsy of the site of active disease can confirm the diagnosis of GPA, in which necrotising granulomatous inflammation is seen. However, surrogate markers may be used for diagnosis without a tissue biopsy. They include upper and lower airway symptoms, signs of glomerulonephritis and a positive ANCA. However, approximately 10-20% of patients with GPA are ANCA negative, allowing for the diagnosis to be overlooked, particularly in those patients with non-specific findings. The reason for the absence of ANCAs is unclear. LEARNING POINTS: A case of granulomatosis with polyangitiis presenting with non-specific findings is described.Some 10% of cases are ANCA negative.When a vasculitis is suspected, a negative ANCA does not exclude the diagnosis of GPA, so further investigations (i.e. tissue biopsy) should be considered.