Intestinal knot syndromes such as ileosigmoid knots, ileal-ileal knots have been described in the literature. We describe a case of a long inflamed appendix wrapping around a loop of ileum causing an appendico-ileal knot, a rare form of closed loop obstruction with only five cases reported previously. The use of CT scanning prior to surgery is discussed and literature reviewed.

We present 10 cases of intramural aortic dissection. The cases are all characterized by the presence of intramural haematoma without the presence of a patent false lumen. The radiological features and possible aetiologies are discussed. The key radiological finding is the presence of a hyperdense rim in the aortic wall on a non-contrast-enhanced computed tomography (CT) scan. In one case, a delayed diagnosis was made using magnetic resonance imaging (MRI). In a further case, the delayed development of a large aortic ulcer was demonstrated. Intramural aortic dissection has only recently been described in the radiological literature. The aetiology of this condition remains controversial. The imaging findings may be subtle and the diagnosis is still frequently being overlooked. We believe CT to be the primary diagnostic test for this condition, and its advantages over MRI and transoesophageal echocardiography (TOE) are discussed.

A number of method of making a Roux-en-Y hepaticojejunostomy have been advocated to help the radiologist gain access to the biliary system. We have found markers and rings unsatisfactory and therefore designed and tested our own prosthesis. Reliable rapid access is easily achieved using this device with a much reduced radiation dose to both patient and radiologist. The prosthesis has been used for the past 3 years, and the last 23 patients are reviewed. Seven patients have required repeated interventions via the loop and we present the findings and our results.

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A patient on long term haemodialysis for analgesic nephropathy, with known teriary hyperparathyroidism developed a rapidly evolving, erosive, non-infective spondylo-arthropathy at two vertebral levels. In addition, erosions were noted adjacent to the right sacroiliac joint. Subsequent postmortem material from the affected vertebral levels demonstrated changes consistent with hyperparathyroidism alone and this is suggested as the possible aetiology underlying this recently recognised destructive spondyloarthropathy.