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  1. Article: Authorship revisited: Bestowing undue credit on students.

    Steyn, Renier

    The South African journal of psychiatry : SAJP : the journal of the Society of Psychiatrists of South Africa

    2021  Volume 27, Page(s) 1578

    Language English
    Publishing date 2021-03-10
    Publishing country South Africa
    Document type Journal Article
    ISSN 1608-9685
    ISSN 1608-9685
    DOI 10.4102/sajpsychiatry.v27i0.1578
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Surgery for Pheochromocytoma: A Single-Center Review of 60 Cases from South Africa.

    Nel, D / Panieri, E / Malherbe, F / Steyn, R / Cairncross, L

    World journal of surgery

    2020  Volume 44, Issue 6, Page(s) 1918–1924

    Abstract: Background: There is a paucity of data on the presentation and surgical management of pheochromocytoma in developing nations, particularly in Africa.: Methods: This study was a retrospective review, which included all patients managed by the Groote ... ...

    Abstract Background: There is a paucity of data on the presentation and surgical management of pheochromocytoma in developing nations, particularly in Africa.
    Methods: This study was a retrospective review, which included all patients managed by the Groote Schuur Hospital/University of Cape Town Endocrine Surgery unit for pheochromocytoma and abdominal paragangliomas, from January 2002 to June 2019.
    Results: Sixty patients were included in the study, of which 33% were male and 67% female. The mean age was 47 years (range 14-81). The median tumor size was 6 cm, with 45% larger than 6 cm. 92% were located in the adrenal gland (87% unilateral, 5% bilateral), and 8% were extra-adrenal. The conversion rate for laparoscopic cases was 20%, with 55% of cases overall completed laparoscopically. Eleven patients with tumors > 6 cm were initially attempted laparoscopically, of which 3 were converted to open, without any associated increased morbidity. A major adverse event was recorded for 5 cases (8%), including 1 mortality. Overall morbidity, blood loss, operating time and hospital stay were all significantly reduced in the laparoscopic group. There were 5 patients with malignant disease (8%).
    Conclusion: This large series, from an established academic endocrine surgery unit in Africa, can serve as a benchmark for units with similar settings and resource limitations, to compare their surgical management and perioperative outcomes.
    MeSH term(s) Adolescent ; Adrenal Gland Neoplasms/pathology ; Adrenal Gland Neoplasms/surgery ; Adrenal Glands/pathology ; Adult ; Aged ; Aged, 80 and over ; Female ; Humans ; Laparoscopy ; Length of Stay ; Male ; Middle Aged ; Pheochromocytoma/pathology ; Pheochromocytoma/surgery ; Retrospective Studies ; Young Adult
    Language English
    Publishing date 2020-02-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 224043-9
    ISSN 1432-2323 ; 0364-2313
    ISSN (online) 1432-2323
    ISSN 0364-2313
    DOI 10.1007/s00268-020-05420-6
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1336: Show issues Location:
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  3. Article ; Online: The soft X-ray Neupert effect as a proxy for solar energetic particle injection

    Steyn, R. / Strauss, D. / Effenberger, F. / Pacheco, D.

    Journal of Space Weather and Space Climate

    2020  

    Abstract: The acceleration and injection of solar energetic particles (SEPs) near the Sun is one of the major unsolved problems in contemporary SEP transport modeling efforts. Here, we establish a new approach to the injection problem by utilizing a correlation ... ...

    Abstract The acceleration and injection of solar energetic particles (SEPs) near the Sun is one of the major unsolved problems in contemporary SEP transport modeling efforts. Here, we establish a new approach to the injection problem by utilizing a correlation between the soft X-ray thermal emission in solar flares, and their hard X-ray counterpart, the so-called Neupert effect, which is indicative of the presence of non-thermal particles. We show that the resulting injection function, in the initial phase of the flare, is similar to those inferred from inverting the transport problem based on in-situ observations. For few cases, we find early injections with no in-situ correspondence, that can be caused by particles accelerated before there is a magnetic connection between the source and the spacecraft. The method has limitations for long-duration injections, since it is not applicable to the decay phase of the flare where particle trapping might play a role. For a sample of SEP events in 1980, observed with the Helios-1 and IMP8 spacecraft, we show the results of a 2D SEP transport model based on this approach. We discuss that, with this method, a physics-based, real-time operational SEP now-cast model for the heliosphere is feasible.
    Subject code 530
    Language English
    Publishing country de
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article: Infected mediastinal cysts following endobronchial ultrasound guided biopsy-a case series.

    Mohamed, Saifullah / Patel, Akshay J / Mehdi, Rana / Menon, Ashvini / Steyn, Richard / Bishay, Ehab

    Journal of surgical case reports

    2022  Volume 2022, Issue 4, Page(s) rjac158

    Abstract: Mediastinal cysts are commonly an incidental finding simulating a benign or malignant diagnosis. Infection is a recognised complication of mediastinal cyst and therefore early surgical management is essential. Endobronchial ultrasound guided biopsy (EBUS) ...

    Abstract Mediastinal cysts are commonly an incidental finding simulating a benign or malignant diagnosis. Infection is a recognised complication of mediastinal cyst and therefore early surgical management is essential. Endobronchial ultrasound guided biopsy (EBUS) has been used to diagnose and manage mediastinal cyst. We present a case series of three patients who presented with sepsis following diagnostic EBUS of mediastinal cyst. We would recommend that EBUS guided biopsy be applied cautiously if there is a high suspicion of mediastinal cyst to avoid post procedural infection, which can thus complicate any future therapeutic options.
    Language English
    Publishing date 2022-04-12
    Publishing country England
    Document type Case Reports
    ZDB-ID 2580919-2
    ISSN 2042-8812
    ISSN 2042-8812
    DOI 10.1093/jscr/rjac158
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  5. Article: SARS-CoV-2 vaccination site as possible pitfall on somatostatin receptor imaging.

    Kolade, Olumayowa U / Ayeni, Akinwale O / Brink, Anita / Steyn, Rachelle / More, Stuart / Prasad, Vikas

    Clinical and translational imaging

    2022  Volume 10, Issue 6, Page(s) 579–585

    Abstract: SARS-CoV-2 (COVID-19) vaccination numbers are globally increasing. Therefore, an increased chance exists that patients undergoing Peptide Receptor Radionuclide Therapy (PRRT) or diagnostic radionuclide imaging for Neuroendocrine Tumours (NETs) may have ... ...

    Abstract SARS-CoV-2 (COVID-19) vaccination numbers are globally increasing. Therefore, an increased chance exists that patients undergoing Peptide Receptor Radionuclide Therapy (PRRT) or diagnostic radionuclide imaging for Neuroendocrine Tumours (NETs) may have recently received vaccination. We report the imaging findings of two NETs patients, A-following [
    Language English
    Publishing date 2022-08-05
    Publishing country Italy
    Document type Editorial
    ZDB-ID 2712000-4
    ISSN 2281-7565 ; 2281-5872
    ISSN (online) 2281-7565
    ISSN 2281-5872
    DOI 10.1007/s40336-022-00519-3
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  6. Article: Job characteristics: their relationship to job satisfaction, stress and depression.

    Steyn, Renier / Vawda, Naseema

    Journal of psychology in Africa (south of the Sahara, the Caribbean, and Afro-Latin America)

    2015  Volume 24, Issue 3, Page(s) 281–284

    Abstract: This study investigated the influences of job characteristics on job satisfaction, stress and depression among South African white collar workers. Participants were managers in full-time employment with large organisations. They completed the Job ... ...

    Abstract This study investigated the influences of job characteristics on job satisfaction, stress and depression among South African white collar workers. Participants were managers in full-time employment with large organisations. They completed the Job Diagnostic Survey, the Perceived Stress Scale and the Beck Depression Inventory. A regression approach was used to predict job satisfaction, stress and depression from job characteristics. Job characteristics (skill variety, task identity, task significance, autonomy and feedback) predicted job satisfaction, as well as stress and depression. Job characteristics are weak predictors of perceived stress and depression. Work related factors, such as interpersonal relations and organisational culture, may better predict mental health in work settings.
    Keywords covid19
    Language English
    Publishing date 2015-01-19
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2424430-2
    ISSN 1815-5626 ; 1433-0237
    ISSN (online) 1815-5626
    ISSN 1433-0237
    DOI 10.1080/14330237.2014.906076
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  7. Article: Synchronous primary lung and breast carcinoma removed via a single incision.

    Mohamed, Saifullah / Jawad, Faisal / Darr, Adnan / Christensen, Thomas Decker / Steyn, Richard

    Journal of surgical case reports

    2020  Volume 2020, Issue 4, Page(s) rjz348

    Abstract: We describe a case of a middle-aged female who was diagnosed with synchronous primary lung and breast cancer following a bout of recurrent chest infections. Subsequent Multi Disciplinary Team (MDT) discussion proposed that in light of the patients' ... ...

    Abstract We describe a case of a middle-aged female who was diagnosed with synchronous primary lung and breast cancer following a bout of recurrent chest infections. Subsequent Multi Disciplinary Team (MDT) discussion proposed that in light of the patients' multiple comorbidities, both lesions should be resected simultaneously under one general anaesthetic. The patient underwent an initial left mastectomy and axillary node clearance. Through the same incision, a left anterolateral thoracotomy was created to complete a left lower lobectomy. Post-operatively she made an uncomplicated recovery and was discharged 7 days after the procedure. Despite undergoing a longer and more complex procedure, her length of stay was in keeping with the average length of stay for a patient undergoing a thoracotomy and lobectomy [1]. This case highlights the importance of a pre-planned multidisciplinary approach to deal with synchronous pathology in an efficiently synchronous manner to improve patient outcomes.
    Language English
    Publishing date 2020-04-06
    Publishing country England
    Document type Case Reports
    ISSN 2042-8812
    ISSN 2042-8812
    DOI 10.1093/jscr/rjz348
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  8. Article: Aspergillus

    Mohamed, Saifullah / Patel, Akshay J / Darr, A / Jawad, Faisal / Steyn, Richard

    Journal of surgical case reports

    2020  Volume 2020, Issue 7, Page(s) rjaa169

    Abstract: ... ...

    Abstract Aspergillus
    Language English
    Publishing date 2020-07-14
    Publishing country England
    Document type Case Reports
    ISSN 2042-8812
    ISSN 2042-8812
    DOI 10.1093/jscr/rjaa169
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  9. Article: Chest wall resection and reconstruction for recurrent breast cancer - A multidisciplinary approach.

    Menon, Ashvini / Khalil, Haitham / Naidu, Babu / Bishay, Ehab / Steyn, Richard / Kalkat, Maninder S

    The surgeon : journal of the Royal Colleges of Surgeons of Edinburgh and Ireland

    2020  Volume 18, Issue 4, Page(s) 208–213

    Abstract: Background: Despite therapeutic advances in the management of breast cancer, a significant number of patients present with locoregional recurrence. Treatment with hormonal, chemo or radiotherapy remains standard in such cases. However, in selected ... ...

    Abstract Background: Despite therapeutic advances in the management of breast cancer, a significant number of patients present with locoregional recurrence. Treatment with hormonal, chemo or radiotherapy remains standard in such cases. However, in selected patients of recurrent breast cancer involving chest wall, multidisciplinary surgical approach could be considered.
    Methods: Between 2010 and 2018, 21 patients with recurrent breast cancer, involving chest wall, were treated at a tertiary care center with resection and reconstruction. The mean age of the patients was 55 years (22-77 years).
    Results: The median interval from first breast resection to chest wall resection (CWR) for recurrent disease was 6 years (1-24 years). Eighteen patients underwent bony resection and 3 patients required extensive soft tissue resection. Complete resection was achieved in 90% of patients. All patients had chest wall reconstruction. There was no in-hospital mortality. During follow-up, 8 patients died, of which 7 were due to distant metastases. The 1 year and 3-year overall survival were 90% (95% CI 66-97) and 61% (95% CI 31-81) respectively. The disease-free survival at 1 and 3 years was the same at 70% (95% CI 45-86). At a mean follow up of 23 months, the average survival in patients operated for local recurrence is 51.7 months (95% CI 37.7-65.7) and 24.5 months (95% CI 7.3-41.7) for patients with distant metastatic recurrence.
    Conclusion: A multidisciplinary oncoplastic approach for recurrent breast cancer, which includes chest wall resection and reconstruction is a useful adjunct in selected group of patients. This improves local disease control, symptoms and possibly disease-free survival.
    MeSH term(s) Adult ; Aged ; Breast Neoplasms/mortality ; Breast Neoplasms/surgery ; Carcinoma/mortality ; Carcinoma/surgery ; Female ; Follow-Up Studies ; Humans ; Middle Aged ; Neoplasm Recurrence, Local/surgery ; Reconstructive Surgical Procedures/methods ; Retrospective Studies ; Thoracic Wall/surgery ; Treatment Outcome
    Language English
    Publishing date 2020-01-06
    Publishing country Scotland
    Document type Journal Article
    ZDB-ID 2102927-1
    ISSN 1479-666X
    ISSN 1479-666X
    DOI 10.1016/j.surge.2019.10.001
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    In stock of ZB MED Cologne/Königswinter

    Zs.A 5756: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  10. Article ; Online: The development of a screening tool for the early identification of risk for suicidal behavior among students in a developing country.

    Vawda, Naseema B M / Milburn, Norweeta G / Steyn, Renier / Zhang, Muyu

    Psychological trauma : theory, research, practice and policy

    2017  Volume 9, Issue 3, Page(s) 267–273

    Abstract: Objective: Adolescent suicidal behavior is a public health concern in South Africa. The purpose of this article is to report on the development of a screening tool for teachers to identify South African students who are most at risk for suicidal ... ...

    Abstract Objective: Adolescent suicidal behavior is a public health concern in South Africa. The purpose of this article is to report on the development of a screening tool for teachers to identify South African students who are most at risk for suicidal behavior. This need is addressed within the context of the limited number of mental health professionals available to provide screening and care services in South Africa.
    Method: Grade 8 students participated by completing sociodemographic questionnaires and self-report psychometric instruments. A screening tool for suicidal behavior was developed using a 4-phase approach.
    Results: Twelve factors for high-risk suicidal behavior were identified and included in the screening tool. While further research is needed to validate the screening tool, the findings provide a useful preliminary starting point for teachers to refer students at high risk for suicidal behavior to mental health services for treatment.
    Conclusion: This screening tool is based on factors that were identified as being associated with suicidal behavior from local research on South African adolescents. The tool contributes to research on adolescent mental health, particularly suicidal behavior, in developing low and middle income countries like South Africa, with the aim of creating African prevention and intervention programs. (PsycINFO Database Record
    MeSH term(s) Adolescent ; Adolescent Behavior/psychology ; Child ; Developing Countries ; Female ; Humans ; Mental Health ; Mental Health Services ; Psychometrics ; Risk Assessment ; Risk Factors ; Self Concept ; South Africa ; Stress, Psychological/psychology ; Students/psychology ; Suicidal Ideation ; Suicide, Attempted/psychology ; Surveys and Questionnaires
    Language English
    Publishing date 2017-05-03
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2497028-1
    ISSN 1942-969X ; 1942-9681
    ISSN (online) 1942-969X
    ISSN 1942-9681
    DOI 10.1037/tra0000229
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