TCVC is more commonly used in long-term HPN. Our analysis of comparative studies showed a lower rate of CRBSI in HPN patients using PICC compared with TCVC; however, analysis of single-arm studies showed that the rate of CRBSI was comparable in PICC and TCVC use. The decision to which type of catheter is most suited for HPN patients should hence be based on the duration of treatment, level of care, patients' dexterity, as well patients' underlying comorbidities that may potentially contribute to other catheter-related complications.

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Fig 3. Computed tomography of the chest revealed an area of cavitation adjacent to inhaled foreign object which likely represented traumatic pneumatocele, with surrounding ground-glass opacity, demonstrating haemorrhage.

Carotid artery dissection in the paediatric population is uncommon and in rare cases it can be due to intraoral blunt trauma associated with a stick-like object such as pen or chopstick in the mouth at the time of injury. Given the rarity of the condition, there is significant knowledge gap in evidence-based diagnosis and management of paediatric blunt cerebrovascular injury (BCVI). This case report presents a rare case of asymptomatic carotid artery dissection due to intraoral blunt trauma in a young patient and the successful conservative management. This report also demonstrated the sonographic progression of the carotid artery dissection on follow up imaging.