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Andrew Laycock

Fiona Stanley Hospital

ORCID: 0000-0003-1761-698X

Publishes on Lung Cancer Diagnosis and Treatment, Lung Cancer Treatments and Mutations, Neuroendocrine Tumor Research Advances. 32 papers and 415 citations.

32Publications
415Total Citations

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Top publicationsby citations

Discordance between clinical and pathologic staging and the timeliness of care of non‐small cell lung cancer patients diagnosed with operable tumors
Oliver Taylor, Glenn Boardman, Jacqueline M. Bentel et al.|Asia-Pacific Journal of Clinical Oncology|2023
Cited by 12Open Access

AIM: This study was performed to evaluate concordance between clinical and pathologic staging of non-small cell lung cancer (NSCLC) in our hospital network. METHODS: We retrospectively reviewed records of 417 patients with NSCLC who received curative surgery and whose pathology was evaluated in our hospital between 2016 and 2021. Cytology, tissue pathology, and associated clinical, surgical, and imaging information were retrieved from hospital digital records. RESULTS: The cohort included 214 female and 203 male patients aged 20.6-85.8 years. Median times among staging computed tomography and surgery (105 days [interquartile range (IQR) 77.0-143.0]), positron emission tomography and surgery (78.5 days [IQR 56.0-109.0]), and endobronchial ultrasound-guided transbronchial needle aspiration and surgery (59 days [IQR 42-94]) indicated that Australian guidelines of <42 days between original referral and commencement of treatment were not being met in the majority of cases. Discordance between clinical TNM (cTNM) and pathologic TNM staging was 25.9%, including 18.4% cases that were clinically understaged and two patients with undetected stage IVA disease. cTNM understaging was significantly associated with time between the final staging investigation and surgery (p = .023), pleural (p < .05) and vessel (p < .05) invasion, and diagnosis of high-grade adenocarcinoma (p = .001). CONCLUSION: Discordance between clinical and pathologic staging of NSCLC is associated with tumor histopathologic characteristics and treatment delays. Although tumor factors that lead to discordant staging cannot be controlled, reduced time to surgery may have resulted in better outcomes for some patients in this potentially curable lung cancer cohort.

Carcinoid tumours of the appendix: an analysis of emergency appendicectomies over a 24‐year period and outcomes of laparoscopic versus open resection
Diong Nguk Chai, S Ahanatha Pillai, Robert J. McClure et al.|ANZ Journal of Surgery|2020
Cited by 8

BACKGROUND: Carcinoid tumours of the appendix are the most common primary malignant lesion of the appendix. However, the overall incidence remains low; found in as few as 0.3-0.9% appendicectomy specimens. Almost all appendiceal carcinoids are found incidentally during surgery for suspected appendicitis. METHODS: A retrospective review of all appendiceal carcinoids was performed in six hospitals from January 1990 until December 2013. Demographic data, operative technique, histopathological characteristics, clinic reviews and need for further treatment were recorded and compared with literature. RESULTS: Appendiceal carcinoids were identified in 175 specimens. The mean age is 32 years (range 8-87 years), with 69 (39.4%) males and 106 (60.6%) females (P < 0.0001). Of these, 106 underwent open surgery with standard McBurney incision, nine underwent full laparotomy and 60 underwent laparoscopic surgery. Six of the laparoscopic surgeries were converted to open procedures. We recorded 159 (90.75%) classical carcinoids and 16 (9.25%) goblet cell carcinoids. Overall, 131 (75.7%) had concurrent appendicitis; classical carcinoid 72.6% versus goblet cell carcinoid 93.8%. The median size of the goblet cell carcinoids was significantly larger than classical carcinoids. Classical carcinoids were mostly distal to the base, while goblet cell carcinoids had equal distribution. It appears that the involvement of resection margins was not influenced by the surgical technique. Thirty patients required further right hemicolectomy as treatment for high-risk features; open 19 (15.9%) versus laparoscopic 11 (20.4%). CONCLUSIONS: Laparoscopic appendicectomy did not seem to adversely influence the margin clearance in appendiceal carcinoid, though we recommend that all appendicectomies should include the mesoappendix.

Post-Myocardial Infarction Ventricular Septal Defect Successfully Treated with Impella as Bridge to Cardiac Transplantation
L. Giudicatti, Benjamin I. Silbert, Xiao-Fang Xu et al.|Case Reports in Cardiology|2022
Cited by 5Open Access

A 63-year-old female presented late with anterior ST-elevation myocardial infarction and cardiogenic shock. This was complicated by acute ventricular septal defect with large left-to-right shunt. An Impella CP was inserted on day seven with rapid haemodynamic improvement. This facilitated bridge to cardiac transplant on day twelve post-MI.