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Biomedical subjects

N M Perry

Publications and source records attributed to N M Perry.

At least 19 recordsLinked to original sources
PubMed2003

Metastases to the breast revisited: radiological-histopathological correlation.

Metastases to the breast from extramammary tumours are infrequent. The main challenge in diagnosis is differentiating them from primary breast cancer. Radiologically this can be difficult as there are no specific imaging characteristics for metastases to the breast. Cytopathological evaluation, as well as full radiological assessment, is vital to avoid unnecessary surgery. Sources of primary tumours include a wide variety of cancers. In this pictorial review we illustrate a number of the commonest sources of primary tumours including lymphoma, lung, ovarian and cervical carcinoma, intestinal carcinoid and rare cases of Ewing's sarcoma and malignant pigmented melanocytic schwannoma (low-grade malignant melanoma).

Adult↗
PubMed2000

Audit of a one-stop breast clinic--revisited.

BACKGROUND: A one-stop diagnostic service has been available for women with symptomatic breast disease at St Bartholomew's Hospital for 5 years and was originally audited in May 1993. In re-auditing the one-stop service our aim was to see if our practice had improved following the original audit and to look at the impact which these changes in practice had made to the service offered to the patient. METHODS: A prospective audit of 4 consecutive clinics was undertaken in November 1997. A total of 300 patients (59 new and 241 follow up) were seen in clinic in this time. The primary outcome measure concerned the completeness of triple assessment in the 40 patients who required one stop investigations, including mammography, ultrasonography and fine-needle aspiration cytology. In addition, mean time to initial consultation and level of awareness of the one-stop facility and its attendant time delay were measured. RESULTS: Of the 300 clinic attendees 40 (38 new, 2 follow-up) had one-stop investigations. As a result of the one-stop service being in practice, 36 patients (90%) had a definitive management decision made at their first outpatient visit. Of these 2 were symptomatic cancers, forming 5% of the workload. A total of 86% of the workload was benign. Four patients (10%) had equivocal results. The mean waiting time from designated appointment until surgical consultation was 36.7 minutes and was disappointingly unchanged from that of the previous audit. However this does not take into account the significant reduction in staffing levels which has occurred between the two periods of assessment. CONCLUSIONS: The initial audit identified a significant problem with time constraints, necessitating that a large number of patients with carcinomas return at a later date for further investigations. Booking only new patients at the beginning of clinic has provided a solution. Disappointingly, our figures do not show a significant improvement in mean waiting time compared with the previous audit, despite allowing GPs greater access of referral. Encouragingly, we have been able to maintain a similar standard of provision of care despite lower staffing levels and to implement the changes suggested by the original audit (thereby closing the audit loop).

Adolescent↗
PubMed2000

Correlation between ultrasound characteristics, mammographic findings and histological grade in patients with invasive ductal carcinoma of the breast.

AIM: To investigate the relationship between ultrasound characteristics, mammographic findings and histological grade in cases of invasive ductal carcinoma which produce a mass on ultrasound. MATERIAL AND METHODS: A retrospective review was performed of the imaging findings in 120 patients diagnosed with invasive ductal carcinoma of the breast between January 1996 and December 1997. Imaging findings were correlated with the histological grade of tumour. RESULTS: High-grade tumours were significantly larger both on ultrasound and mammography (P < 0.016). A spiculated margin on mammogram was documented in 72% of low-grade tumours compared with only 24% of high-grade tumours (P = 0.001). Twenty-two per cent of low-grade tumours had a poorly defined margin on mammography compared with 66% of high-grade tumours (P = 0.001). At ultrasound, 16% of high-grade tumours (95% confidence limits 7-29%) had a well-defined margin. Acoustic enhancement was seen in 36% of high-grade tumours compared with only 9% of low and intermediate-grade tumours (P = 0.003): 22% of all tumours showed acoustic enhancement. Acoustic shadowing was seen in 71% of low-grade tumours compared with only 28% of high-grade tumours (P = 0.003). Malignant-type microcalcification was seen on mammogram in 6% of low-grade tumours compared with 31% of high-grade tumours (P = 0.045). CONCLUSION: The classical appearance of a malignant breast mass as a spiculated mass on mammogram associated with acoustic shadowing on ultrasound is more typical of a low-grade tumour. In comparison, high-grade tumours are more likely to demonstrate posterior acoustic enhancement, and a proportion has a well-defined margin on ultrasound. Therefore, high-grade invasive ductal carcinoma may paradoxically display similar imaging features to a benign breast mass.

Adult↗
PubMed1999

The significance of new densities and microcalcification in the second round of breast screening.

AIM: To assess the nature of new densities and microcalcifications in the second round of breast screening. MATERIALS AND METHODS: A total of 34 634 women were screened at our unit in the second round of the United Kingdom National Health Service Breast Screening Programme. Of those attending for the second time, 302 were recalled for further work-up of 311 new lesions. The lesions were divided into masses, microcalcifications, asymmetric densities and architectural distortions. Masses were classified according to margin and density, and microcalcifications according to morphology and distribution. RESULTS: Among women attending for the second time, the cancer detection rate was 0.45% (89 cancers). One hundred and eighty-eight new masses were identified: 53 well-defined (two malignant), 67 partially defined (six malignant), 54 ill-defined (18 malignant), and 14 spiculate (14 malignant). Well-defined masses were usually cysts, especially in women on hormone replacement therapy. Of 97 new microcalcifications, 71 were pleomorphic (28 malignant), 12 linear (one malignant), and 14 punctate (none malignant). Twenty-five new asymmetric densities were identified (five malignant). One of two architectural distortions was malignant. Malignancy was found in 21% of new masses, 30% of new microcalcification and 20% of asymmetric densities. CONCLUSION: Carcinoma was found in 24% of all new mammographic abnormalities appearing in a 3-year screening period. Spiculate and ill-defined masses, clustered pleomorphic microcalcification, and new asymmetric densities should be regarded with particular suspicion. The use of fine needle aspiration cytology in combination with imaging assessment may help to reduce the number of benign excisional biopsies for new mammographic lesions.

Biopsy, Needle↗
PubMed1999

Waldenstrøm's macroglobulinaemia of the breast detected by colour Doppler ultrasound.

Waldenstrøm's macroglobulinaemia (lymphoplasmacytoid lymphoma) is a low grade B cell non-Hodgkin's lymphoma. The majority of patients present with advanced disease. Lymphoma of the breast is rare and usually arises as part of a disseminated disease process. A case of disseminated Waldenstrøm's macroglobulinaemia is reported in which the breast was involved. The findings using standard mammographic and ultrasound techniques were non-specific and only when colour Doppler examination was performed could an abnormality be detected.

Breast Neoplasms↗
PubMed1998

An audit of patient acceptance of one-stop diagnosis for symptomatic breast disease.

AIMS: The impetus for optimizing outpatient provision of breast-care services has come both from the patient and management in order to reduce anxiety and make full use of scarce resources. The one-stop diagnostic clinic for the investigation of symptomatic breast lesions is a relatively recent concept with well-known service benefits. However, acceptance to the patient has not been previously investigated. RESULTS: The results of this prospective audit demonstrate a high level of patient satisfaction with the multi-disciplinary, one-stop breast clinic.

Ambulatory Care↗
PubMed1995

Benign biopsies in the prevalent round of breast screening: a review of 137 cases.

In the first round of the National Health Service Breast Screening Programme, 35,533 women attended for screening at the two breast screening units served by St Bartholomew's Hospital. Further assessment was necessary in 2212 women (6.2%), of whom 412 (1%) subsequently underwent surgical biopsy. Of these 137 had benign lesions. The predominant mammographic abnormality leading to biopsy was microcalcification in 55, a mass in 48, parenchymal asymmetry in 18 and architectural distortion in 16. Histology revealed fibrocystic change in 66, fibroadenoma in 27, radial scar/complex sclerosing lesion in 23, atypical ductal hyperplasia only in eight, and a variety of unusual benign lesions in 13. In an attempt to determine criteria which would minimize unnecessary biopsy of benign lesions in future, the mammographic and cytological features of these benign lesions were reviewed and compared with the final histology. The most common diagnostic problems were clustered and variable microcalcification, the radial scar/complex sclerosing lesion, and mammographic features shown to be atypical hyperplasia on histology.

Biopsy↗
PubMed1995

Clinical audit of a specialist symptomatic breast clinic.

The efficient delivery of health care requires vigilant quality assurance. We describe the audit of our symptomatic breast clinic, which includes the option of a one-stop diagnostic service. A total of 134 new and 386 follow-up patients attended over four consecutive clinics. The majority of new referrals (68%) were seen by a consultant surgeon. Urgent referrals were seen significantly sooner than routine referrals (P < 0.001, chi 2-test), and the mean wait from designated appointment to seeing the surgeon was 37.6 (range-68 to 171) min. One-stop investigations were offered to 50 patients; of these, 36 women (72%) had a total wait of less than 2 h. For those not investigated at the same clinic, the mean time until investigations was 6.1 (range 0-36) days and mean recall was 2.7 (range 1-8) weeks. Patients undergoing definitive surgery for cancer (n = 5) were operated on average 14.2 (range 7-27) days after the decision was made in outpatients, while the mean waiting time for non-cancer operations was 49.7 (range 15-98) days. Objective audit on outpatient services is possible and can lead to improvement of services.

Adult↗
PubMed1995

One-stop diagnosis for symptomatic breast disease.

A consultant-led one-stop diagnostic service has been available at a busy symptomatic breast clinic each week at St Bartholomew's Hospital for 18 months. Women can be investigated appropriately using mammography, ultrasonography and cytology with immediate reporting. The aim is to achieve a diagnosis and management plan for each patient at the initial outpatient visit. A prospective audit of four consecutive clinics was undertaken to assess the impact of this service on clinical practice. Fifty patients out of 134 new and 386 follow-up clinic attenders had one-stop investigations. As a result of immediate reporting, 48 (96%) patients had a management decision made at the first outpatient visit, 9 (18%) were offered surgery, and 18 (36%) were discharged with a benign diagnosis and no dominant mass. Four symptomatic cancers were detected and evaluated on a one-stop basis, constituting 8% of the workload of this clinic. The mean wait from designated appointment until surgical consultation was 37.7 min (range -68-171 min) and that for investigation until subsequent clinical review was 56.9 min (range -4-191 min). Thirty-six (72%) one-stop patients had a total wait of less than 2 h and 95% were seen in under 3 h. It is felt that the one-stop clinic allows optimum patient management, minimises anxiety associated with symptomatic breast disease, and maximises utilisation of hospital outpatient resources.

Adult↗
PubMed1990

The role of computerized tomographic scanning in the management of rhabdomyosarcoma in nonorbital head and neck sites.

Computerized tomographic (CT) scans and radiographs of 19 children with nonorbital rhabdomyosarcoma of the head and neck region presenting between 1975 and 1987 were reviewed retrospectively. The scans were assessed for the extent of soft tissue disease and for adverse prognostic features such as the presence of intracranial and parameningeal involvement and for bony destruction. Where applicable, the CT scans were compared with plain radiographs. Follow-up scans after treatment were also reviewed and, where available, histology was correlated with any residual masses. CT was valuable in the initial assessment of the extent of the primary tumor and, therefore, in treatment planning. It was useful in identifying poor prognostic features such as bony destruction and intracranial extension but was not found to be helpful in elucidating the nature of residual or recurrent masses.

Actuarial Analysis↗
PubMed1985

Heart size in high-kilovoltage chest radiography.

High-kilovoltage (kV) radiography of the chest using an air gap results in magnification of the heart and thorax despite the use of a longer focus-to-film distance. One hundred patients had their recent high-kV chest radiograph compared with their previous low-kV film. There was a significant increase in all cardiac parameters. Geometric distortion of the cardiac shadow also occurred, resulting in magnification and elongation preferentially affecting the left side of the heart. We believe this causes an additional subjective impression of a large heart. Radiologists and clinicians should revalue their assessment of cardiac size when such a technique is used.

Heart↗
PubMed1984

Hemorrhagic angiomyolipoma of the kidney.

Hemorrhage within a renal angiomyolipoma alters its characteristic appearance. We present a case diagnosed preoperatively with computerized tomography and ultrasound.

Female↗
PubMed1980

Hypothermic nephrolithotomy in solitary kidneys.

The functional effects of nephrolithotomy performed with ischaemia and cooling have been studied in a series of 29 operations performed on patients with a solitary kidney. There was temporary post-operative functional deterioration in every patient, but this was followed by rapid and satisfactory recovery, often with functional improvement, in 27 out of the 29 cases. Only 2 patients showed minor functional deterioration, but both benefited clinically from their surgery and remain well. No patient required permanent dialysis support. A previous study by Wickham (1979) has shown satisfactory results from 250 cases of nephrolithotomy performed with ischaemia and cooling, but in these cases it was not possible to assess the degree of compensation provided by the non-operated kidney. The study of patients undergoing surgery to solitary kidneys obviates the question of contralateral functional compensation.

Humans↗