Methylene blue for parathyroid localisation.
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Biomedical subjects
Publications and source records attributed to D Scott-Coombes.
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BACKGROUND: Ambulatory surgery (23:59-hour hospital stay) is gaining popularity in endocrine surgery. Hypocalcaemia is common following total thyroidectomy. Identifying patients with low risk of hypocalcaemia may facilitate early discharge (24-hour stay). METHODS: We conducted a prospective study including all patients undergoing total thyroidectomy. Blood samples were taken immediately following skin closure and the following morning for parathyroid hormone (PTH) and calcium measurement. Calcium supplements were routinely given when serum calcium was below 2.0 mmol/l. RESULTS: Thirty patients (27 females, 3 males) underwent total thyroidectomy (including 4 nodal dissection) for multinodular goitre (14), Graves' disease (11), papillary (4) and follicular (1) thyroid carcinoma. Twelve patients developed symptomatic transient hypocalcaemia. Based on morning calcium of < 2.0 mmol/l as trigger for calcium supplementation, 8 patients received calcium supplement with 4 false negatives, resulting in a specificity of 94.4%, sensitivity of 66.7%, positive predictive value (PPV) of 88.9% and negative predictive value (NPV) of 81%. Based on PTH levels (< 1.5 pmol/l) immediately following skin closure, 11 patients would receive calcium supplement, with 1 false negative resulting in a specificity of 83.3%, sensitivity of 91.7%, PPV of 78.6% and NPV of 93.8%. If supplementation is based on PTH levels (< 1.5 pmol/l) immediately following skin closure and morning calcium level (< 2.0 mmol/l), all 12 symptomatic patients will be correctly treated, with 4 false positives resulting in a combined specificity of 77.8%, sensitivity of 100%, PPV of 75% and NPV of 100%. CONCLUSIONS: Combining the immediate postoperation PTH levels (< 1.5 pmol/l) and morning serum calcium (< 2.0 mmol/l) can accurately identify patients at risk of hypocalcaemia following total thyroidectomy, allowing safe, early discharge.
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Schwannomas are benign, encapsulated nerve sheath cell neoplasms. Cervical sympathetic chain (CSC) schwannomas are rare, with less than 50 cited cases in the literature. CSC schwannomas may mimic a number of parapharyngeal masses. We report a rare variant, "ancient" schwannoma, which presented cytologically and radiologically as a thyroid mass. This is the first report of a CSC schwannoma mimicking a thyroid mass and the first report of an ancient schwannoma of the CSC.
Primary pyomyositis is a pyogenic infection of skeletal muscle with abscess formation, which traditionally lacks an identifiable cause. We present a case of pyomyositis for which a cause was established. This was largely due to the fact that the patient was young and fit, enabling him to survive such overwhelming sepsis long enough for cycling of his neutrophil count to become apparent. Having had multiple abscesses drained, he was successfully treated with granulocyte colony stimulating factor and has remained well since.
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Intra-abdominal adhesions develop in over 90 per cent of patients undergoing laparotomy. Peritoneal fibrinolysis is believed to be important in the pathophysiology of adhesion formation. This study investigated the fibrinolytic response of postoperative peritoneal fluid in 12 patients undergoing elective laparotomy. There was a significant reduction in the plasminogen activating activity to undetectable levels at 24 h, which was sustained at 48 h (P < 0.05). While there was an early reduction in the concentration of tissue plasminogen activator (median 40.0, 28.2, 16.3 and 31.9 ng/ml at 2, 6, 24 and 48 h respectively; P < 0.05), the abolition of functional fibrinolytic activity appeared to be secondary to a marked increase in the concentration of plasminogen activator inhibitor (PAI) 1 (median 86, 196, 800 and 730 ng/ml at 2, 6, 24 and 48 h respectively; P < 0.05) and PAI-2 (median less than 6, 12, 155 and 245 ng/ml at 2, 6, 24 and 48 h respectively; P < 0.05). This reduction in the plasminogen activating activity of peritoneal fluid may favour the formation of permanent fibrous adhesions following surgery.
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The effect of a management protocol incorporating the selective use of fine catheter peritoneal cytology (FCPC) and laparoscopy on the unnecessary appendicectomy rate was studied in adult patients (> or = 16 years) treated at one district general hospital over an 11-month period. Appendicectomy was performed on 62 adult patients managed according to this protocol, six (10%) of whom had a histologically normal appendix and no other acute condition requiring surgery. A further 57 patients underwent appendicectomy after standard clinical assessment and investigation without the use of FCPC or laparoscopy. Nineteen (33%) of these patients had a histologically normal appendix removed, with no other acute condition requiring surgical treatment. The selective use of FCPC and laparoscopy significantly reduced the unnecessary appendicectomy rate from 33% to 10% (chi 2 = 10.0, P < 0.005). The more widespread use of these techniques in patients with suspected appendicitis is therefore recommended.
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Laparoscopy and fine catheter peritoneal cytology (FCPC) have been advocated as aids in the assessment of acute abdominal pain. In all, 411 patients admitted to a district general hospital during a 10-month period were managed using a standard protocol incorporating these techniques. After initial assessment by a surgical registrar, 151 patients were excluded from further progress through the protocol (age less than 16 years, definite diagnosis made or contraindication to FCPC. The remaining 260 patients were placed in one of four management groups: (A) urgent operation (23 patients); (B) 'look and see' (40 patients); (C) 'wait and see' (59 patients); (D) urgent operation not indicated (138 patients). Eighty-eight of 99 patients (88 per cent) in groups B and C, where the need for operation was uncertain, underwent successful FCPC and 39 patients (39 per cent) underwent laparoscopy. In these patients the initial registrar management decision proved to be incorrect in 33 cases (33 per cent), but by following the protocol the number of management errors actually made was reduced to 13 (13 per cent, P less than 0.001). This would have been reduced to 8 per cent if the protocol had not been violated in five patients. This study demonstrates the effectiveness of a protocol using FCPC and laparoscopy to improve the management of patients with acute abdominal pain.
A 30 year old female with previous Crohn's disease presented with recurrent cutaneous vasculitis and polyarthritis. She subsequently developed recurrent transient bilateral mastitis with auricular and laryngotracheal chondritis typical of relapsing polychondritis. Acute mastitis is a previously unrecognized association of this disorder.