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Wyświetlanie 1-3 z 3
Tytuł:
Review and characteristics of 585 salivary gland neoplasms from a tertiary hospital registered in the Polish National Major Salivary Gland Benign Tumors Registry over a period of 5 years: a prospective study
Autorzy:
Piwowarczyk, Krzysztof
Bartkowiak, Ewelina
Klimza, Hanna
Greczka, Grażyna
Wierzbicka, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/1397308.pdf
Data publikacji:
2020
Wydawca:
Index Copernicus International
Tematy:
benign neoplasms
characteristics
pleomorphic adenoma
registry
salivary gland
surgery
Opis:
Introduction: A Polish National Major Salivary Gland Benign Tumors Registry (SGR) is a report of benign salivary gland neoplasms (SGNs) from 26 different centres in Poland, introduced in 2014. The aim of this study is to analyze demographic characteristics and clinico-pathological factors of benign SGNs treated in large tertiary institutions and to determine possible correlations between selected variables. Material and method: Analysis of 585 patients recorded in SGR and operated on for SGNs in the Department of Otolaryngology and Laryngological Surgery, University of Medical Sciences, Poznań, Poland, over a 5-year period. Patient age, sex, occupation, place of residence, tumor location, size, histology, recurrence, facial nerve function after surgery, wound healing, surgery procedure, availability of pre-operative imaging examinations, fine-needle aspiration cytology (FNAC) results were analyzed. Results: 338 females and 247 males with a mean age of 53 years were operated on. In total, 96.2% of tumors originated from the parotid and 3.8% from the submandibular gland. The most frequent primary tumor diameter was 2–4 cm (59.5%) followed by <2 cm (29.2%) and >4 cm (8.4%). Tumors of over 4 cm were frequently removed by partial superficial parotidectomy, while those under 2 cm – by extracapsullar dissection (ECD). Pleomorphic adenomas (PA) were predominant (58.8%), followed by Warthin’s tumor (WT) – 37.1%. Patients with WT were on average 13.3 years older than patients with PA. Discussion: This research can be helpful to better understand the clinico-pathological features of SGNs. Long-termin hospital-based analysis is important for subsequent metaanalyses and comparisons with other centers. The reasons why not all patients’ data are reported to the national SGR should be further precisely analyzed.
Źródło:
Polish Journal of Otolaryngology; 2020, 74, 5; 1-6
0030-6657
2300-8423
Pojawia się w:
Polish Journal of Otolaryngology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of accurate documentation of parotid tumor operative reports on secondary surgical procedure
Autorzy:
Piwowarczyk, Krzysztof
Bartkowiak, Ewelina
Chou, Jadzia
Kukawska, Katarzyna
Piwowarczyk, Ludwika
Wierzbicka, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/1397268.pdf
Data publikacji:
2021
Wydawca:
Index Copernicus International
Tematy:
chirurgia
ślinianka przyuszna
reoperacja
nerw twarzowy
wznowa guza
powikłania pooperacyjne
Opis:
Aim: The accuracy of primary operative reports (OpR) was assessed based on a tertiary referral department’s experience with reoperations of parotid gland tumors, in order to develop a comprehensive operative report schema. Material and methods: The retrospective cross-sectional study was conducted at the Department of Otolaryngology and Laryngological Surgery, Poznan University of Medical Sciences, Poland. Out of 1154 surgeries performed over a 10-year period, 71 patients underwent reoperation. Their OpR were categorized into accurate and non-accurate, and the reoperation field and reoperation course were categorized as anticipated or unanticipated, according to the defined criteria. The main outcome measure was the impact of accuracy of the first OpR on reoperation course. Results: In this series, OpR were 39% (14/36) accurate, 61% (22/36) non-accurate. Reoperation fields were 16% (11/71) anticipated, 37% (26/71) unanticipated. Reoperation courses were 37% (26/71) anticipated, 63% (45/71) unanticipated. An anticipated reoperation course followed 20% (5/26) of accurate and 20% (5/26) of non-accurate primary OpR. An unanticipated reoperation course followed 20% (9/45) of accurate and 40% (18/45) of non-accurate OpR. There is no significant relationship between the reoperation course and the accuracy of the first OpR [Chi2(1) = 0.69; p = 0.40466]. The most common variable that affected non-accuracy of the OpR was facial nerve function after surgery (6/12). Discussion: The operative report should be based on transparent criteria, a robust classification and a comprehensive protocol. This will improve follow-up and facilitate the planning of reoperation.
Źródło:
Polish Journal of Otolaryngology; 2021, 75, 3; 1-7
0030-6657
2300-8423
Pojawia się w:
Polish Journal of Otolaryngology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physical and numerical simulation of the production chain of fasteners manufactured of 32CrB4 steel control-cooled in the stelmor process to develop the multiphase microstructure
Autorzy:
Piwowarczyk, Michał
Wolańska, Natalia
Wilkus, Marek
Pietrzyk, Maciej
Rauch, Łukasz
Kuziak, Roman
Pidvysots’kyy, Valeriy
Radwański, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/29519769.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
wire rod
Stelmor process
multiphase steels
cold heading
numerical modelling
Opis:
The development of the concept of Thermomechanical Controlled Processing (TMCP) in the wire rod rolling mill of CMC Poland has opened up new opportunities for the production of fasteners without the application of heat treatment. The crucial effect of TMCP in the case of wire rod rolling is its capability of shaping fine austenite grain size following the last pass, typically below 20–25 µm in the wire rod cross-section. This is a prerequisite for obtaining the required cold workability level for the cold forming of fasteners, even if hard constituents (bainite, martensite) are present in the wire rod structure. In this paper, the physical simulation and numerical modelling capabilities were described for the design of cooling conditions in the Stelmor process and cold heading operation. The investigated material was conventional 32CrB4 grade used for the fasteners production with the application of heat treatment.
Źródło:
Computer Methods in Materials Science; 2023, 23, 2; 5-16
2720-4081
2720-3948
Pojawia się w:
Computer Methods in Materials Science
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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