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PubMed1994

Predictive DNA testing and prophylactic thyroidectomy in patients at risk for multiple endocrine neoplasia type 2A.

BACKGROUND: Missense germ-line mutations in the RET protooncogene are associated with multiple endocrine neoplasia type 2A (MEN 2A). Detection of these mutant alleles in kindred members predicts disease inheritance and provides the basis for preventative thyroidectomy. METHODS: A polymerase chain reaction (PCR)-based genetic test for the 19 known RET mutations was designed to study 132 members of 7 kindreds with MEN 2A. Haplotypes also were constructed using genetic markers flanking the MEN 2A locus. Plasma calcitonin (CT) concentrations were determined before and after provocative testing. RESULTS: Direct DNA testing and haplotype analysis showed that 21 of 58 kindred members at risk for disease had inherited a mutation in the RET protooncogene associated with MEN 2A. Plasma CT concentrations were elevated in 9 of the 21 family members, but were normal in 12. After genetic counseling, 13 of the 21 kindred members (6 with normal and seven with elevated plasma CT levels), consented to immediate thyroidectomy. In each patient, the resected thyroid gland showed C-cell hyperplasia with or without medullary thyroid carcinoma. There were no metastases to regional lymph nodes, and postoperative stimulated plasma CT levels were normal. CONCLUSION: The PCR-based direct DNA test for RET mutations is accurate, rapid, and reproducible. For all 132 individuals evaluated, the results of direct DNA analysis were consistent with haplotype studies. The direct test for mutations in the RET protooncogene is the preferred method for screening MEN 2A kindreds. In family members who have inherited a RET mutation, total thyroidectomy is indicated, regardless of the plasma CT values.

Adolescent↗

PubMed2001

Injury to the superior laryngeal branch of the vagus during thyroidectomy: lesson or myth?

OBJECTIVE: To examine the historical evidence that the thyroidectomy performed on operatic soprano Amelita Galli-Curci was responsible for the abrupt termination of her career. SUMMARY BACKGROUND DATA: The superior laryngeal branch of the vagus nerve may be injured during thyroidectomy, producing vocal defects more subtle than those found after recurrent nerve injury. It is widely believed that Galli-Curci suffered superior laryngeal nerve injury during her thyroidectomy by Arnold Kegel, MD, in 1935, resulting in the termination of her career. METHODS: The authors examined contemporary press reviews after surgery, conducted interviews with colleagues and relatives of the surgeon, and compared the career of Galli-Curci with that of other singers. RESULTS: Evidence against the prevailing view is to be found in the fact that she continued to perform acceptably after surgery, her continued friendly relationship with the surgeon for years afterward, the absence of the typical effects of superior laryngeal nerve injury, and the presence of other explanations for the gradual decline in her vocal abilities (documentation of deterioration before surgery, physiologic changes in the larynx comparable to those found in most other famous sopranos who retire at about the same age or earlier, and the possible development of myxedema). CONCLUSIONS: The story should no longer be perpetuated in surgical textbooks and papers.

Famous Persons↗

PubMed1986

Sublingual pyramidal lobe. Complications of subtotal thyroidectomy for Graves' disease.

A potential complication of subtotal thyroidectomy where a large pyramidal lobe is present is described. The pyramidal lobe normally is immobilized inferiorly by its attachment to the thyroidal isthmus. When the isthmus is removed and the pyramidal lobe is left in situ during subtotal thyroidectomy its superior attachments will allow the pyramidal lobe to become situated sublingually. This may produce gagging and nausea. To avoid the complication, it is recommended that the pyramidal lobe be removed during subtotal thyroidectomy. If the patient also is thyrotoxic, I-131 can be used to treat this complication successfully.

Adult↗

PubMed1980

Psychiatric manifestations of the post-thyroidectomy bilateral abductor vocal cord paralysis syndrome. Cases and theoretical issues.

Post-thyroidectomy bilateral abductor vocal cord paralysis (BAVCP) is a life-threatening syndrome characterized by serious psychiatric manifestations as well as by voice, airway, hypothyroid, and hypoparathyroid symptoms. Of the 128 patients with post-thyroidectomy BAVCP syndrome, 45 (35.2 per cent) had psychiatric complications: 21 of the 128 patients (16.4 per cent) had pre-existing psychiatric symptoms exacerbated by the post-thyroidectomy BAVCP syndrome, 16 (12.5 per cent) had psychiatric symptoms initiated by the syndrome, six (4.7 per cent) had psychiatric symptoms etiologically distinct from the syndrome, and two (1.6 per cent) were misdiagnosed. The role of psychiatric treatment is described. Theoretical aspects of laryngeal dysfunctions associated with psychiatric disorders and psychotropic medications are discussed.

Adult↗

PubMed1999

Granisetron, droperidol, and metoclopramide for preventing postoperative nausea and vomiting after thyroidectomy.

OBJECTIVES/HYPOTHESIS: Patients undergoing thyroidectomy may be especially at risk of experiencing postoperative nausea and vomiting (PONV). This study was undertaken to compare the efficacy and safety of granisetron, droperidol, and metoclopramide for preventing PONV after thyroidectomy. STUDY DESIGN: Prospective randomized, double-blind study. METHODS: One hundred twenty female patients received granisetron 40 microg/kg, droperidol 20 microg/kg, or metoclopramide 0.2 mg/kg (n = 40, each) intravenously (IV) immediately before the induction of anesthesia. A standardized general anesthetic technique was employed throughout the procedure. RESULTS: The incidence of a complete response, that is, no PONV and no need for another rescue antiemetic during the first 3 hours (0 to 3 hours) after anesthesia was 90% with granisetron, 55% with droperidol, and 50% with metoclopramide, respectively; the corresponding incidence during the next 21 hours (3 to 24 hours) after anesthesia was 85%, 50%, and 45% (P<.05; overall Fisher's Exact probability test). No clinically important adverse events were observed in any of the groups. CONCLUSIONS: Prophylactic therapy with granisetron is superior to droperidol or metoclopramide for preventing PONV after thyroidectomy.

Adult↗

PubMed2005

Incidental multifocal papillary microcarcinomas of the thyroid: is subtotal thyroidectomy combined with radioiodine ablation enough?

BACKGROUND: The extent of thyroid resection and the necessity of lymph node dissection has become an issue of controversy in patients with incidental multifocal papillary microcarcinoma. METHOD: Between 1993 and 2001 a total of 4120 patients underwent surgery for thyroid diseases: 142 patients showed papillary thyroid cancer of < or = 1 cm, multifocal microcarcinomas were found in 22 patients (15.5%). Twenty patients (17 women, three men, aged 26-71 years) met the inclusion criterion of having pre- and intraoperatively no indication of malignancy (incidentaloma). A limited surgical procedure ranging from bilateral subtotal (n=15), ipsilateral total, contralateral subtotal (n=4) to bilateral total (n=1) thyroidectomy without lymph node dissection was performed. The mean volume of thyroid remnants was 4.3 ml. RESULTS: In 16/20 (80%) patients, the thyroid remnant was ablated by the first dose of 131I, using 3.7 GBq 131I in 15 patients and 1.85 GBq 131I in one patient. Three patients received a second, and one patient a third radioiodine ablation. All 20 patients remained free from relapse or metastasis, documented by negative 131I whole-body scintigraphy and unmeasurable thyroglobulin levels after thyroid hormone withdrawal in hypothyroidism. One patient died 7 years after the diagnosis of thyroid cancer from primary lung cancer. Median follow-up was 65 months (range, 24-120 months). CONCLUSION: Subtotal thyroidectomy followed by radioiodine therapy without completion thyroidectomy and lymphadenectomy is a possible option in incidental multifocal microcarcinomas.

Adult↗

PubMed2003

100 cases of endoscopic thyroidectomy: breast approach.

Neck surgery is one of the newest fields of endoscopic surgical application. One hundred patients underwent endoscopic thyroidectomy. We used 3 incisions: 1 on both upper circumareolar areas and 1 approximately 3 cm below the clavicle on the tumor side. Subplatysmal and subcutaneous operative space was created with CO2 insufflation at 6 mm Hg of pressure. The thyroidal vessels and the parenchyma of the gland were dissected and divided with ultrasonic scalpel and commonly used laparoscopic instruments. The mean (+/-SD) operation time was 136 +/- 10 minutes before the year 2000 and 67 +/- 9 in the year 2000 (P < 0.05). There were six cases of conversion to conventional thyroidectomy. Postoperative complications occurred in five cases. There was no subcutaneous emphysema. The patients were satisfied with the cosmetic result. On the basis of our experience with these 100 patients, we believe that endoscopic thyroidectomy is feasible and safe for resection of thyroid tumors. Thus, this procedure will provide another surgical technique for treatment of thyroid tumors, with maximized cosmetic effect.(2)

Adolescent↗

PubMed2006

Gasless endoscopic thyroidectomy via an axillary approach: experience of 30 cases.

Surgery for thyroid disease requires skin incisions that can result in postsurgical problems such as prominent scars, adhesions, hypesthesia, and paresthesia in the neck. To overcome these problems we performed gasless endoscopic thyroidectomy via an axillary approach. Between May 2004 and April 2005, 30 patients underwent gasless endoscopic thyroidectomy via an axillary approach. The mean operating time was 126.8+/-32.4 minutes, and the mean length of hospital stay was 4.3+/-1.1 days. No cases required conversion to open surgery and none involved significant intraoperative complications. Three patients (10.0%) complained of slight hypesthesia or paresthesia in the anterior chest wall, and only 2 patients (6.7%) complained of discomfort while swallowing 4 months after surgery. All patients were satisfied with the cosmetic results. Gasless endoscopic thyroidectomy via an axillary approach is feasible and safe and provides excellent cosmetic results with a minimal degree of postoperative complaints.

Adolescent↗

PubMed2006

Minimally invasive thyroidectomy: basic and advanced techniques.

OBJECTIVE: Minimal access surgery in the thyroid compartment has evolved considerably over the past 10 years and now takes many forms. We advocate at least two distinct approaches, depending on the disease process and multiple patient factors. The technical aspects are explored in depth with liberal use of videographic demonstration. METHODS: The authors conducted a comparison of two distinct surgical techniques with photographic and videographic documentation of two distinct minimal access approaches to the thyroid compartment termed minimally invasive thyroidectomy (MITh) and minimally invasive video-assisted thyroidectomy (MIVAT). Both historic and previously unpublished data (age, gender, pathology, incision length, and complications) are systematically analyzed. RESULTS: Patients who underwent minimally invasive thyroidectomy (n = 31) had a mean age of 39.4 +/- 10.7 years; seven were male and 24 were female. The most common diagnosis was follicular or Hürthle cell adenoma (29%), followed by papillary or follicular cancer (26%). The mean incision length was 4.9 +/- 1.0 cm. One patient developed a hypertrophic scar and one patient developed thrombophlebitis of the anterior jugular vein. There were 14 patients in the MIVAT group with a mean age of 43.7 +/- 11.4 years; one was male and 13 were female. The majority of patients had follicular adenoma (42.9%) or papillary carcinoma (21.4%) as their primary diagnosis. The mean incision length was 25 +/- 4.3 mm (range, 20-30 mm), and there were no complications. CONCLUSIONS: Two distinct approaches to minimal access thyroid surgery are now available. The choice of approach depends on a number of patient and disease factors. Careful patient selection will result in continued safe and satisfactory performance of minimally invasive thyroid surgery.

Adenoma, Oxyphilic↗

PubMed2005

Videoscopic thyroidectomy with fine needle-type apparatuses: an approach that does not leave a scar on the neck or anterior chest.

A total videoscopic operation with constant CO(2) gas insufflation is ideal for performing a scarless thyroidectomy because the skin incisions at the surgical ports are made far from the neck in the axillar area. However, there are many difficulties associated with the performance of a videoscopic thyroidectomy when approaching pneumo-subcutaneously from distant ports, because the instruments are inserted tangentially toward the thyroid gland from a distant port and their range of manipulation is limited. The devices and surgical techniques used for a videoscopic thyroidectomy that does not leave a scar on the anterior chest or neck were developed. Fine needle-type cautery and forceps that could access directly to the thyroid gland from the neck were used to support the forceps. A CO(2) reservoir bag connected to the CO(2) insufflation tube contributed to the safer manipulation by the creation of a stable operation space during emitting smoke from coagulation device. A silicon ring stopper was useful to prevent dislodging of the ports. In conclusion, videoscopic neck surgery would be easier using these new devices and techniques and would produce better cosmetic results than video-assisted and conventional neck surgeries.

Adult↗

PubMed2026

Superficial Cervical Plexus Block and Quality of Recovery after Thyroidectomy: A Randomized Clinical Trial.

BACKGROUND: Whether adding a bilateral superficial cervical plexus block to a thyroidectomy enhanced recovery pathway improves postoperative quality of recovery remains uncertain. METHODS: In a single-center prospective, randomized, double-blind, placebo-controlled trial in adults undergoing thyroidectomy with general anesthesia, participants were randomized to bilateral superficial cervical plexus blocks with 0.25% bupivacaine or saline. All participants received multimodal analgesia with dexamethasone, acetaminophen, nonsteroidal anti-inflammatory drugs, and incisional local anesthetic. The primary outcome was quality of recovery, measured by the QoR-40 survey, on postoperative day 1. Secondary outcomes included the need for rescue opioid, total opioid consumption, nausea, vomiting, antiemetic administration, length of stay in the postanesthesia care unit (PACU), and opioid use on postoperative day 1. RESULTS: A total of 160 participants were randomized to receive a superficial cervical plexus block with bupivacaine 0.25% (n = 78) or saline (n = 82). On postoperative day 1, mean QoR-40 scores were 174 (95% CI, 170 to 178) for bupivacaine and 173 (95% CI, 169 to 177) for saline. The adjusted mean difference between bupivacaine versus saline was 0.91 (95% CI, -3.57 to 5.40; P = 0.688). There were no significant between-group differences in the need for opioids in the PACU or on postoperative day 1, nausea, vomiting, or PACU length of stay. However, the total amount of opioid administered in the PACU was lower in the bupivacaine group (median [interquartile range], 0 [0 to 8]) compared with the saline group (2 [0 to 20]; Hodges-Lehmann location shift, 0 morphine milligram equivalents; 95% CI, -4 to 0; P = 0.017), and fewer participants in the bupivacaine group received rescue antiemetics (3 [3.8%] vs . 13 [16%]; difference, -12%; 95% CI, -22% to -1.8%; P = 0.011). CONCLUSIONS: Bilateral superficial cervical plexus blocks did not improve quality of recovery after thyroidectomy when added to a multimodal analgesic regimen including dexamethasone, acetaminophen, nonsteroidal anti-inflammatory drugs, and incisional local anesthetic but were associated with lower total PACU opioid consumption.

Humans↗

PubMed2004

Changes in endothelium-dependent arterial dilation before and after subtotal thyroidectomy in subjects with hyperthyroidism.

OBJECTIVE: This case-control study was carried out to assess the alteration of endothelium-dependent arterial dilation before and after subtotal thyroidectomy in subjects with hyperthyroidism. PATIENTS AND METHODS: The study subjects included 12 patients with hyperthyroidism and 39 apparently healthy individuals. We performed a subtotal thyroidectomy on the hyperthyroid patients. The endothelium-dependent arterial dilation was determined with a high-resolution ultrasound method in each patient at the hyperthyroid stage before treatment (stage H), the euthyroid stage induced immediately before surgery (stage E), and the transient hypothyroid stage 1 or 2 months after surgery (stage L). RESULTS: The flow-mediated arterial dilation decreased significantly from H to E and from E to L (P < 0.001). As compared with H, baseline blood flow decreased markedly at stages E and L (P < 0.001). The flow-mediated arterial dilation and baseline blood flow in the control subjects were very close to those at stage E of the hyperthyroid patients. The absolute change in the flow-mediated arterial dilation showed significant negative correlation with the changes in TSH (r =-0.86, P < 0.001), lipoprotein (a) [Lp(a)] (r =-0.77, P < 0.001) and low density lipoprotein (LDL) (r =-0.79, P < 0.001), and significant positive correlation with changes in fT3 (r =+0.88, P < 0.001). The absolute change in the baseline blood flow showed significant positive correlation with the change in fT3 (r =+0.85, P < 0.001) and significant negative correlation with the change in TSH (r =-0.63, P < 0.01). CONCLUSION: The endothelium-dependent arterial dilation increases significantly in untreated hyperthyroid patients, and decreases markedly after a subtotal thyroidectomy. Therefore, we conclude that the endothelium is more responsive to reactive hyperaemia in the hyperthyroid than the euthyroid state.

Adult↗

PubMed1975

Postoperative complications of thyroidectomy: a comparison of two series at an interval of ten years.

A comparison is presented of the complications found in two series each consisting of 331 consecutive patients undergoing thyroidectomy in the same Unit ten years apart. The overall incidence of postoperative complications has been reduced, particularly in the group of patients having thyroidectomy for thyrotoxicosis following which it is now no greater than after thyroidectomy for benign non-toxic goitre. The techniques used to try to reduce the postoperative complication rate are discussed. The incidence of permenent recurrent laryngeal nerve palsy has been reduced to 0-3% and of permanent hypoparathyroidism to 1-2%. The overall incidence of complications causing permanent disability is now 3-9%.

Adolescent↗

PubMed1986

Total thyroidectomy in the management of differentiated thyroid cancer: a review of 258 cases.

Controversy continues to surround the management of differentiated thyroid cancer. For the past 20 years, a standardized protocol of total thyroidectomy followed by radioiodine ablation has been followed at Royal North Shore Hospital. During the period 1966-83, 327 cases of thyroid malignancy were treated surgically and, of these, 258 were differentiated thyroid cancer. Following total thyroidectomy, the incidence of recurrent nerve palsy was 2.8% and that of permanent hypoparathyroidism 3.2%. The overall 10 year cumulative survival for these patients was 87%. Whilst there were apparent differences in survival depending on the pathological type of tumour (papillary, follicular, mixed), further analysis shows that most of the differences in prognosis can be explained on the basis of age and sex alone. Young patients (less than 60 years) have an excellent 10 year survival (96%) whilst that for the elderly is only 61%. Males have a worse prognosis at 10 years than females. Total thyroidectomy is a safe procedure for the treatment of differentiated thyroid cancer. It allows the subsequent evaluation and treatment of unrecognized metastatic disease and offers the young patient a potentially normal lifespan.

Adenocarcinoma↗

PubMed1987

Endotracheal intubation following thyroidectomy.

Thirty-five patients requiring tracheostomy or endotracheal intubation, following thyroidectomy are reviewed. Conditions included 30 patients with multinodular goitre, three patients with Graves's disease and two patients with carcinoma of the thyroid. Early in the series, emergency tracheostomy was performed in three patients with airway obstruction following thyroidectomy. Ten patients were deemed at extremely high risk of developing airway obstruction and underwent prophylactic tracheostomy. Endotracheal intubation has been used in preference to tracheostomy in the latter part of the series. Emergency endoctracheal intubation was performed on one patient and prophylactic intubation was carried out in 20 patients. The morbidity and length of hospital stay in this latter group was considerably less than those requiring tracheostomy. It is concluded that patients with potential airway obstruction following thyroidectomy should have prophylactic endotracheal intubation, in preference to tracheostomy.

Adolescent↗

PubMed1992

Total thyroidectomy: the technique of capsular dissection.

This paper describes the technique of total thyroidectomy using capsular dissection. Total thyroidectomy is a safe straightforward anatomical procedure in which meticulous dissection can provide protection to the parathyroid glands and to the recurrent laryngeal nerve. This protection is achieved by using capsular dissection, hugging the gland and dividing the tertiary branches (i.e. the third order of division) of the vessels while dissecting the parathyroid glands with their vascular pedicles free from the thyroid surface, with minimal exposure of the recurrent laryngeal nerve and disturbance of its blood supply. Total thyroidectomy removes all visible thyroid tissue although it is permissible to leave a very small remnant of tissue (less than a fraction of a gram) in the region of the ligament of Berry in order to protect the recurrent laryngeal nerve and the blood supply to the parathyroid glands. This technique ensures that the incidence of complications, including permanent hypoparathyroidism and recurrent laryngeal nerve palsy, is reduced to a minimum.

History, 20th Century↗

PubMed2006

Results of thyroidectomy in 101 cats with hyperthyroidism.

OBJECTIVE: To describe outcome after thyroidectomy in hyperthyroid cats, with emphasis on peri- and postsurgical complications and recurrence. STUDY DESIGN: Retrospective study. ANIMALS: One hundred and one hyperthyroid cats. METHODS: Diagnostic work-up included preoperative measurement of plasma calcium, sodium, potassium, urea, and creatinine concentrations, and thyroid scintigraphy. A modified intracapsular dissection technique was performed. Postoperatively, parathyroid gland function was evaluated by measuring plasma calcium concentration several times daily. Outcome was obtained by standard telephone questionnaire. RESULTS: Thyroid scintigraphy revealed ectopic hyperplastic thyroid tissue (EHTT) in 9 cats. Preoperatively, 29 of 91 cats had hypokalemia. Two cats died within 3 days after surgery and 5 of 86 cats developed postoperative transient hypocalcemia. On histologic examination, thyroid carcinoma was identified in 3 of 88 cats. Hyperthyroidism recurred in 5 cats between 3 and 59 months; 4 of these cats had EHTT preoperatively. The difference in recurrence rate between hyperthyroid cats with and without EHTT was significant (P<.001). CONCLUSION: Complications were uncommon after thyroidectomy performed by an experienced surgeon when combined with an anesthetic regimen associated with minimal adverse cardiovascular effects. Hyperthyroid cats with EHTT had a significantly higher chance of recurrence. CLINICAL RELEVANCE: Thyroidectomy is associated with a low incidence of surgical complications and is an effective treatment for hyperthyroid cats when radioactive iodine therapy is not available. Preoperative thyroid scintigraphy is advised. Surgery is not recommended when EHTT is present, because of a higher chance of developing recurrent disease.

Animals↗

PubMed1985

Psychiatric morbidity following total and partial thyroidectomy.

Thirty subjects were screened for psychiatric morbidity approximately 7 years after they had undergone a thyroid operation. Thirteen were identified as "cases" by the General Health Questionnaire. Total and partial thyroidectomy subjects were compared. The total thyroidectomy patients identified as "cases" showed lower values of plasma calcium and higher values of inorganic phosphate than the partial thyroidectomy "cases", but the difference failed to reach statistical significance. No clinical or biochemical differences were found between cases and non-cases, irrespective of the type of operation.

Adult↗