A survey of current practice in out of hours percutaneous nephrostomy insertion in the United Kingdom.

AIM: To establish the current out of hours service provided in the United Kingdom for nephrostomy insertion. MATERIALS AND METHODS: Using the Royal College of Radiologists' (RCR) database a questionnaire was sent to all the current clinical directors. RESULTS: Questionnaires were sent to 246 hospitals, with replies received from 178 (72.3%). The number of consultants doing nephrostomies as part of their routine work was 476; this increased to 625 including those who perform nephrostomies out of hours. Therefore 24% of consultants only perform nephrostomies out of hours. For the times when there was no formal out of hours nephrostomy service, the arrangements varied and included calling a consultant who was not on call (52%), or transferring the patient (37%). Only 19 hospitals (11%) had a separate interventional on call rota, the majority of these being teaching hospitals (68%). The availability of assistance was limited, with nursing staff available only 43% of the time. In institutions with specialist registrars, the registrars were involved with the nephrostomies 75% of the time. CONCLUSIONS: There is a wide variation in the out of hours service provided by radiology departments for nephrostomy insertion. A large percentage of out of hours nephrostomies are done by consultants who do not perform do the procedure as part of their routine clinical practice, which is contrary to the advice of the Royal College of Radiologists for out of hours working. In addition the provision of nursing assistance for the procedure is inadequate.

CT-guided cutting needle biopsy of lung lesions--safety and efficacy of an out-patient service.

AIM: To determine the safety and efficacy of CT-guided cutting needle biopsy of lung lesions as an out-patient procedure. MATERIALS AND METHODS: A total of 185 consecutive biopsies were performed under CT guidance on 183 patients between January 1991 and December 1998 using 20-gauge (n= 33), 18-gauge (n= 151) or 14-gauge (n= 1) core biopsy needles. A chest radiograph was taken after observation in the Radiology department for 1 h and asymptomatic patients were discharged. RESULTS: The histology was malignant in 150 biopsies (81. 1%) and benign in 23 (12.4%) with 12 false-negative results (6.5%); there were no false-positive results. The sensitivity was 92.6%; specificity 100%; negative predictive value 65.7%; and overall accuracy 93.5%. Pneumothoraces occurred in 48 patients (25.9%); one required aspiration only and four required insertion of an intercostal drain. One patient developed a pneumothorax after discharge. Small haemoptyses occurred in 13 patients without pneumothorax (7.0%), one of whom was admitted. In-patient treatment was required in 10 patients (5.4%). CONCLUSION: Computed tomography-guided cutting needle biopsy of pulmonary lesions is a safe technique with a diagnostic accuracy and complication rate comparable to reported figures for fine needle aspiration biopsy. It can be safely performed on an out-patient basis.

The use of digital subtraction angiography in penetrating neck injury--a very instructive case.

This case report illustrates the value of intravenous digital subtraction angiography (DSA) in cases of penetrating neck injury. The debate continues between a policy of mandatory exploration of all penetrating neck wounds versus one of selective exploration with observation of the remainder. The argument for the former policy is that vascular trauma can occur without clinical signs. Whichever policy is followed a DSA provides invaluable information in strengthening the decision either not to operate or if operating which operation to perform and which approach to use. DSA is a quick, simple and safe investigation that can be carried out at any time of day or night.

The value of negative needle biopsy in suspected operable lung cancer.

The value of needle biopsy (NB) of pulmonary masses in patients unsuitable for surgery is well established. The presence of malignant cells confirms the diagnosis and thus aids management. We have reviewed 196 patients aged over 40 years with a solitary pulmonary mass suspected of being operable lung cancer to assess the effect of a negative NB result on the management. Malignant cells were discovered in 148 patients and diagnoses of infection were made in a further 10. In 38 patients no malignant cells were identified. Nineteen patients proceeded to thoracotomy and 13 of these had malignant disease. Nine others had further needle biopsies and eight of these had malignancy. Ten patients were followed up without any further intervention and four of these eventually proved to have malignancy. Thus of the 38 patients with no malignant cells on NB but no definite benign diagnosis, 25 had malignancy, six had benign disease and seven had presumed benign disease. In this series NB provided a definite benign diagnosis in 5.1% of patients. From this study it may be concluded that if a solitary pulmonary nodule has a high clinical suspicion of malignancy and the patient is a candidate for surgery, NB is of limited value in management.

Mediastinal Castleman's disease: a missed pre-operative diagnosis?

Mediastinal lymphadenopathy is common and usually requires further evaluation with computed tomography (CT). This report describes a patient in whom the pattern of calcification within the lymph-node mass, seen on CT, might have suggested the diagnosis of Castleman's disease. Intense enhancement following intravenous contrast medium would indicate the vascularity of the lesion and add weight to the diagnosis.

Pulmonary lacunae: sequelae of metastases following chemotherapy.

This study describes the appearance of thin-walled cavities arising at the sites of pulmonary metastases from germ cell tumours treated with chemotherapy. We have termed these 'pulmonary lacunae'. They occur with a prevalence of approximately 7% in patients with multiple pulmonary metastases from testicular teratoma.

'Watch policy' in patients with suspected stage I testicular seminoma: CT as a sole staging and surveillance technique.

A study was undertaken to assess the role of computed tomography (CT) as the sole imaging technique for the staging and surveillance of patients with stage I testicular seminoma. Of the 15 patients studied, five (33%) relapsed. This relapse rate differs from other studies. The reasons for this are discussed.