Colovesical fistula following an open preperitoneal "Kugel" mesh repair of an inguinal hernia.

Erosion of the "Kugel" mesh into intraperitoneal organs has not been previously reported in the medical literature. We report such an occurrence in a 54-year-old male, 4 years following a "Kugel" preperitoneal repair of a left-sided inguinal hernia. The patient presented with septicaemia, pneumaturia and left iliac fossa pain. His computed tomography (CT) scan indicated the presence of gas in the bladder and a thickened loop of sigmoid colon attached to the region of the dome of the bladder. Colonoscopy showed some scattered diverticula in the sigmoid colon but no tumour. On surgical exploration, the "Kugel" mesh was found to erode the sigmoid colon and the bladder wall, leading to a colovesical fistula. An anterior resection of the rectum with removal of the mesh with closure of the bladder wall defect was performed.

Laser photoirradiation in digital flexor tendon repair.

This study evaluates tendon coaptation using Nd:YAG laser photoirradiation in an in vivo cockerel model. Using the intervinculum segments of the flexor profundus tendons, experimental transactions were performed. Tendon coaptation was then attempted using laser photoirradiation. Tendons were immediately examined for evidence of stable coaptation. After this assessment, specimens were excised and processed for electron microscopic examination and exposure to trypsin digestion. Despite varying multiple laser parameters, tissue welding was not observed. The subsequent functional and ultrastructural observations of irradiated tendon suggest that these changes are those of simple thermal denaturation. The results of this study suggest that when successful tissue welding has been observed in other tissue types, the mechanism is unlikely to be because of formation of intermolecular collagen bonds as hypothesized. An alternative hypothesis is that laser welding reflects photothermal coagulation of cytoplasmic peptides or nucleic acids liberated at the coaptation interface. This may explain the successful welding of cell-rich tissues such as bowel, vas deferens, and arteries and the observed failure of laser welding in collagen-rich but relatively hypocellular tendon.

A simple technique for closure of the last laparoscopic working port.

Closure of the last laparoscopic working port can be frustrating, particularly in the very obese. A technique is described that simplifies this procedure, using a grasping forcep to transfer the abdominal wall suture.

Intraoperative vascular localization to facilitate endopyelotomy after renal transplantation.

BACKGROUND: Pelviureteric junction (PUJ) obstruction after renal transplantation is uncommon. Surgical correction can be technically challenging due to dense perinephric adhesions and variable hilar vascular anatomy. Endopyelotomy is well established in the treatment of PUJ obstruction in native kidneys. METHODS: The present paper reports the first experience of antegrade visual cold-knife endopyelotmy performed in a renal allograft. In orientating the incision at the PUJ, preoperative imaging was supplemented by intrarenal Doppler ultrasound, using a probe designed for transoesophageal cardiac monitoring. To the authors' knowledge this approach has not previously been reported. RESULTS: Renal vascular relationships were readily indentified by identifying arterial and venous waveforms. CONCLUSIONS: For this uncommon procedure the use of intrarenal Doppler ultrasound provides greater security in avoiding inadvertent vascular injury.

Bilateral renal oncocytoma: case report and implications in renal tumour management.

Renal oncocytomas are uncommon benign tumours that have recently been recognized as a unique pathological entity. These lesions may attain considerable size; however, most present as an asymptomatic incidental finding. Although usually solitary, these tumours are occasionally multicentric or bilateral at presentation. Retrospective studies suggest that oncocytoma may account for up to 5% of tumours previously classified as well-differentiated renal cell carcinoma. At present, conservative management is hampered by difficulty in establishing a confident pre-operative or intra-operative diagnosis. A case of bilateral asymptomatic renal oncocytoma is presented, and the implications of this lesion for the management of renal tumours is discussed.

A comparison of amiodarone and digoxin for treatment of supraventricular arrhythmias after cardiac surgery.

Despite the widespread use of amiodarone in non-surgical patients, its role in the management of supraventricular tachyarrhythmias after cardiac surgery is not clear. We set out to compare the relative efficacy of amiodarone and digoxin in the management of atrial fibrillation and flutter in the early postoperative period. This prospective randomised trial comprised 30 patients, previously in sinus rhythm, who developed sustained atrial fibrillation or flutter following myocardial revascularisation, valve surgery or combined procedures. Amiodarone was administered as an intravenous loading dose followed by a continuous infusion. Digoxin was given as an intravenous loading dose followed by oral maintenance therapy. Electrocardiographic and haemodynamic monitoring was continued for 24 h after the commencement of treatment. There was a marked reduction in heart rate in both groups, mainly in the first 6 h, from 146 to 89 beats per minute in the amiodarone group and from 144 to 95 in the digoxin group. At the end of the 24 h, one of the 15 patients in the amiodarone group and 3 of the 15 patients in the digoxin group remained in atrial fibrillation. No patient in either group developed adverse reactions. We conclude that intravenous amiodarone therapy is safe and at least as effective as digoxin in the initial management of arrhythmias after cardiac surgery.

Fibrovascular polyp of the oesophagus.

Fibrovascular polyps of the oesophagus are rare. Despite this, they provoke considerable interest because of their often dramatic presentation, and their potential for lethal complications. When the diagnosis is entertained, endoscopic or radiological confirmation is usually easily obtained and local excision is curative. An adult patient is described who presented after partial regurgitation of a 10 cm polyp. In view of the size of the lesion and its proximal attachment, endoscopic polypectomy was undertaken. The diagnostic pitfalls and therapeutic options in this unusual condition are discussed.

Hepatocolonic vagrancy: wandering liver with colonic abnormalities.

Abnormalities of hepatic fixation resulting in excessive mobility in a transverse plane are uncommonly encountered. The unusual incidental finding of a freely mobile liver and spleen in a patient presenting with sigmoid volvulus is reported. At laparotomy, the inferior aspect of the right hemidiaphragm was smoothly peritonealized, without evidence of coronary or triangular ligaments. It is postulated that this abnormal hepatic mobility reflects persistence of the primitive ventral mesogastrium. To the authors' knowledge, this unusual condition has not previously been recognized. The literature relating to wandering liver is reviewed and four other cases are presented. An invariable association of persisting ventral mesogastrium with abnormalities in colonic anatomy (hepatocolonic vagrancy) is described.

Prophylaxis against postsplenectomy pneumococcal infection.

An excess risk of overwhelming sepsis following splenectomy is well established. In view of this, surgical responsibility must embrace the administration of pneumococcal prophylaxis. Current recommendations vary, but routine pneumococcal vaccination, together with penicillin prophylaxis in selected patients, is advocated widely. This retrospective review of 75 patients undergoing splenectomy was undertaken in order to evaluate the extent to which current practice complies with these recommendations. Among surviving patients, the incidence of vaccination with polyvalent pneumococcal vaccine (PPV) was found to vary according to operative indication. All haematological patients received pre-operative PPV. Two-thirds of multitrauma patients were vaccinated, while 42% of patients who required splenectomy following accidental intra-operative trauma received PPV. Only 11% of patients who underwent incidental splenectomy were vaccinated. Long-term antibiotic prophylaxis was commenced in 33% of surviving patients under 20 years of age, and in 8% with underlying malignancy. These results highlight a need for greater vigilance in the administration of pneumococcal prophylaxis, particularly following accidental or incidental splenectomy.

Transomental herniation mimicking sigmoid volvulus.

Transomental herniation as a mechanism for large bowel obstruction is a comparative surgical rarity. The second such case is presented, together with a brief review of available literature. The pathogenesis of omental foraminae is discussed, and an additional aetiological mechanism is proposed.