PubMed Health⌕ Search

Biomedical subjects

M Smithers

Publications and source records attributed to M Smithers.

13 recordsLinked to original sources
PubMed2002

The triad of bilateral retinoblastoma, dysplastic naevus syndrome and multiple cutaneous malignant melanomas: a case report and review of the literature.

We report a case of a patient with the triad of retinoblastoma, dysplastic naevus syndrome (DNS) and multiple cutaneous melanomas. The combination of retinoblastoma and DNS is a significant risk factor for the development of cutaneous melanoma. This risk extends to family members. We recommend that survivors of (inherited) retinoblastoma and their relatives are closely screened for the presence of dysplastic naevi.

Adult↗
PubMed2001

Metastatic lesions in the joint associated with acute inflammatory arthritis after dendritic cell immunotherapy for metastatic melanoma.

A 47 year old man undergoing immunotherapy for metastatic melanoma with autologous dendritic cells pulsed with autologous tumour peptide and hepatitis B surface antigen developed acute left ankle arthritis. Gout and acute infection were excluded, and an autoimmune aetiology or occult metastasis were considered. The arthritis initially subsided with indomethacin, but the symptoms recurred 2 months later, and magnetic resonance imaging demonstrated metastatic melanoma of the left talus. Immunohistochemical staining of a cerebral metastatic deposit biopsied 1 week after the onset of arthritis demonstrated T-cell and macrophage infiltration of the tumour. In addition, the patient developed melanoma-specific delayed type hypersensitivity and cytotoxic T-cell responses after vaccination. Thus, the monoarthritis represented an 'appropriate' inflammatory response directed against metastatic melanoma.

Arthritis↗
PubMed2000

Estimating the prevalence of diagnosed diabetes in a health district of Wales: the importance of using primary and secondary care sources of ascertainment with adjustment for death and migration.

AIMS: To determine diagnosed diabetic prevalence within our district (population 434398) in 1996 using data from two sources. METHODS: A general practice audit comprising data on patients with diabetes from 61 (82%) of 74 general practices was linked to a record linkage-derived patient index in which data from secondary care and other sources underwent a process of probability matching to identify records relating to the same patient and to flag those with diabetes. By linking this dataset to a mortality dataset, patients known to have died before 1996 could be excluded. Age and sex-stratified emigration rates were applied to those identified by the hospital dataset for each year from 1991 onwards. RESULTS: A total of 386988 residents (89.1%) were listed with a general practitioner participating in the audit, of whom 6050 patients were identified as having diabetes in 1996; a prevalence rate of 1.56%. From the hospital-based source, 7639 patients were identified who were alive in 1996, a period prevalence of 1.76%. By combining the two sources, and extrapolating the general practice audit to the population as a whole, a total of 10 530 patients were identified of whom 8735 were confirmed as still resident within South Glamorgan during 1996. This represented a period prevalence of between 2.01% to 2.42%. By applying age and sex-stratified migration rates to the diabetic population identified by hospital sources, a diagnosed diabetic population of 10,004 was identified, a prevalence of 2.3%. CONCLUSIONS: This study demonstrates that to calculate the true prevalence of diagnosed diabetes from health sources, it is necessary to use both primary and secondary care sources.

Adolescent↗
PubMed2000

The prevalence of multiple diabetes-related complications.

AIMS: To determine the prevalence of the complications of diabetes and the interrelationship between them within a United Kingdom district health authority population. METHODS: Data extracted from a general practice diabetes audit were combined with data for patients with diabetes derived from a patient index constructed using record linkage techniques. RESULTS: A total of 10709 patients were identified as having diabetes (prevalence 2.47%). Coronary heart disease was present in 25.2%, cerebrovascular disease in 9.6%, complications of the 'diabetic foot' in 18.1%, retinopathy in 16.5% and nephropathy in 2.0%. Over a half of the patients (52.1%) had none of the studied complications, 30.2% had one, 12.7% had two, 4.1% had three, 0.8% had four and 0.1% had all five. All complications were related to both age and duration of diabetes but duration was particularly apparent for the microvascular complications (retinopathy and nephropathy). Macrovascular complications in the Type 2 diabetic population appear advanced in onset compared with Type 1. CONCLUSIONS: Multiple complications are apparent in almost one fifth of patients with diabetes. Macrovascular morbidity in Type 2 diabetes of early onset indicates that a targeted approach to treatment may prove most beneficial in both patient and health service terms.

Adolescent↗
PubMed1999

Immature human monocyte-derived dendritic cells migrate rapidly to draining lymph nodes after intradermal injection for melanoma immunotherapy.

Injected antigen-loaded immature monocyte-derived dendritic cells (DCs) may be incapable of migrating from skin to draining lymph nodes for antigen presentation. The in vivo migratory capacity of intradermally administered immature monocyte-derived DCs was therefore investigated during a phase I/II clinical trial for metastatic melanoma. DCs cultured from adherent monocytes in the presence of autologous serum, granulocyte-macrophage colony stimulating factor and interleukin-4 were pulsed with antigen and labelled with technetium-99m hexamethylpropylene-amineoxime (99mTc-HMPAO) ex vivo, then injected intradermally. A 99mTc-HMPAO control containing an equivalent amount of radioactivity was injected into the opposite thigh. The pelvis was then imaged with a gamma camera. The DCs were characterized as immature by functional and phenotypic analysis. Labelled DCs travelled to the draining inguinal lymph nodes within 10 min, and the draining lymph nodes were clearly outlined up to 4 h after injection. Free NmTc outlined draining lymph nodes after 10 min but was cleared from the nodes within 1 h. Thus, immature human monocyte-derived DCs migrate rapidly to and remain in draining lymph nodes after intradermal injection for immunotherapy.

Adult↗
PubMed1998

Laparoscopy in the management of diaphragmatic rupture due to blunt trauma.

BACKGROUND: Traumatic diaphragmatic rupture remains a diagnostic challenge often unrecognized until laparotomy in over 40% of patients and the diagnosis is delayed in a further 15%. This report describes four patients diagnosed at laparoscopy with a ruptured diaphragm. METHODS: One patient had a left diaphragmatic rupture amenable to laparoscopic repair in the emergency setting. Three patients underwent laparoscopy 2, 7 and 10 days after injury which revealed two right-sided and one extensive left-sided rupture, respectively; each required open repair. RESULTS: While laparoscopy is an excellent diagnostic tool, particularly in the delayed setting, repair is not possible for right-sided ruptures because of the liver bulk. CONCLUSIONS: Thoracoscopy in the instance of delayed presentation may offer the best chance for minimal-access diagnosis and treatment when there is suspicion of a right-sided diaphragmatic rupture.

Adolescent↗
PubMed1996

Interruptions during general practice consultations--the patients' view.

BACKGROUND: Although most aspects of the consultation have been extensively reported there is very little information on the effects of interruptions on the consultation. OBJECTIVE: We wished to discover the patients' view of interruptions. METHODS: In this pilot study the sources and frequency of interruptions to the consultations of a single general practitioner were measured. The effects of interruptions on 102 patients whose consultations were interrupted were then ascertained using a simple questionnaire. RESULTS: The overall interruption rate was found to be 10.2%. The telephone was the commonest source of interruption, accounting for 50% of interruptions. Although most patients did not perceive the interruption as having an important effect on the consultation, 20% of patients did feel that the interruption had a bad effect on the consultation and 40% of patients felt it would have been better not to have been interrupted. A majority of patients (52%) did not feel that the reason for the interruption was important. Although most patients did not feel affected by the interruption, a significant minority (18%) of patients had a strongly negative emotional response to the interruption. CONCLUSIONS: In view of these findings the need for further work has been highlighted.

Adolescent↗
PubMed1995

Psychological responses to malignant melanoma. An investigation of traumatic stress reactions to life-threatening illness.

A cross-sectional study of 95 individuals with malignant melanoma was conducted to investigate posttraumatic stress responses to a diagnosis of melanoma and to validate the use of the Impact of Event Scale (IES) as a measure of the response to the trauma of life-threatening disease. The diagnosis and progression of malignant disease are likely to present a range of acute and chronic trauma to the individual and the individual's family. The findings suggest that the IES is a reliable and valid measure of this distress, with scores varying according to disease progression and prognostic status of nonmetastatic disease patients. This indicates the importance of clinical attention to the specific symptoms that may best reflect the traumatic impact of life-threatening illness and its progression, and the applicability of posttraumatic stress syndromes in understanding the psychological distress of this clinical population.

Adult↗
PubMed1994

Percutaneous fluoroscopic gastrostomy. A safe option?

OBJECTIVE: To assess the safety of percutaneous fluoroscopic gastrostomy (PFG) tube insertion for enteral nutrition. DESIGN AND SETTING: The records of 70 consecutive patients who had a PFG procedure at a tertiary referral hospital (Princess Alexandra Hospital) were analysed retrospectively. MAIN OUTCOME MEASURE: Incidence of morbidity and mortality from PFG. RESULTS: Sixty-nine of 70 procedures were successfully performed. There were two deaths secondary to aspiration pneumonia and a morbidity rate of 13%. These figures are comparable with results from other series. CONCLUSION: PFG is a safe, effective procedure for enteral nutrition.

Adolescent↗
PubMed1993

Plasma concentrations of bupivacaine after wound infiltration of an 0.5% solution after inguinal herniorrhaphy: a preliminary study.

After routine inguinal herniorrhaphy we gave 12 patients a wound infiltration regimen of bolus doses of 20 ml of 0.5% bupivacaine via a catheter within the wound and rectally administered indomethacin (100 mg). Peak venous plasma bupivacaine concentrations ranged from 0.07 mg.l-1 to 1.14 mg.l-1 (mean (SD) 0.47 (0.33) mg.l-1), and occurred at between 0.25 and 2 h after the first dose. Plasma concentrations were well below the toxic threshold of 4 mg.l-1 and there was no accumulation. The regimen provided satisfactory analgesia. There were no wound infections nor signs of toxicity.

Adult↗
PubMed1993

Videothoracoscopic primary repair of early distal oesophageal perforation.

Distal oesophageal perforation following dilation of oesophageal strictures or achalasia is usually recognized soon after the event. Treatment of two patients with perforation resulting from vigorous achalasia, diagnosed within hours of the procedure, was approached by videothoracoscopic exposure and successful primary repair was achieved in both instances. Details relating to patient preparation and operative technique are presented. Both patients recovered, with normal diet being tolerated by the seventh day after surgery, were discharged on day eight and 10 and returned to normal activities within 3 weeks of surgery. The technique presented is apparently well suited to distal oesophageal perforations diagnosed early, when primary closure can be achieved safely, and significantly improves patient recovery after this often iatrogenic injury.

Adult↗
PubMed1985

Injuries in sport. A prospective casualty study.

During the 12 months of 1980, 1652 sporting injuries were recorded in three casualty departments in Brisbane. More than 35 different sports were represented, although the four major football codes accounted for 63% of cases. Sixty-nine per cent of injuries occurred during competition, and 11% during training, while 20% were sustained during recreational sporting activities. The mechanisms, nature, and site of injuries are presented and comparisons are made between the four football codes. Foul play was responsible for 7% of injuries in contact sports. Closed soft-tissue injuries comprised 55% of cases, yet only in 8% of these were the patients referred for physiotherapy. The hospital presentation of football injuries was different from that seen in the field.

Adolescent↗