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Query: "author" (Ivica Ratoša) .

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1.
Preoperative treatment with radiochemotherapy for locally advanced gastroesophageal junction cancer and unresectable locally advanced gastric cancer
Ivica Ratoša, Irena Oblak, Franc Anderluh, Vaneja Velenik, Jasna But-Hadžić, Ajra Šečerov Ermenc, Ana Jeromen, 2015, original scientific article

Abstract: To purpose of the study was to analyze the results of preoperative radiochemotherapy in patients with unresectable gastric or locoregionally advanced gastroesophageal junction (GEJ) cancer treated at a single institution. Between 1/2004 and 6/2012, 90 patients with locoregionally advanced GEJ or unresectable gastric cancer were treated with preoperative radiochemotherapy at the Institute of Oncology Ljubljana. Planned treatment schedule consisted of induction chemotherapy with 5-fluorouracil and cisplatin, followed by concomitant radiochemotherapy four weeks later. Three-dimensional conformal external beam radiotherapy was delivered by dual energy (6 and 15 MV) linear accelerator in 25 daily fractions of 1.8 Gy in 5 weeks with two additional cycles of chemotherapy repeated every 28 days. Surgery was performed 4-6 weeks after completing radiochemotherapy. Following the surgery, multidisciplinary advisory team reassessed patients for the need of adjuvant chemotherapy. The primary endpoints were histopathological R0 resection rate and pathological response rate. The secondary endpoints were toxicity of preoperative radiochemotherapy and survival. Treatment with preoperative radiochemotherapy was completed according to the protocol in 84 of 90 patients (93.3%). Twenty patients (22.2%) did not undergo the surgery because of the disease progression, serious comorbidity, poor performance status or still unresectable tumour. In 13 patients (14.4%) only exploration was performed because the tumour was assessed as unresectable or diffuse peritoneal carcinomatosis was established. Fifty-seven patients (63.4%) underwent surgery with the aim of complete removal of the tumour. Radical resection was achieved in 50 (55.6%) patients and the remaining seven (7.8%) patients underwent non-radical surgery (R1 in five and R2 in two patients). In this group of patients (n = 57), pathological complete response of tumour was achieved in five patients (5.6% of all treated patients or 8.8% of all operated patients). Down-staging was recorded in 49 patients (86%), in one patient (1.8%) the stage after radiochemotherapy was unchanged while in seven patients (12.3%) the pathological stage was higher than clinical, mainly due to higher pN stage. No death was recorded during preoperative radiochemotherapy. Most grade 3 and 4 toxicities were due to vomiting, nausea and bone marrow suppression (granulocytopenia). Twentysix (45.6%) patients died due to GEJ or gastric carcinoma, one died because of septic shock following the surgery and a reason for two deaths was unknown. Twenty-eight patients (49.1%) were disease free at the time of analysis, while 29 patients (50.9%) developed the recurrence, mostly as distant metastases. At two years, locoregional control, diseasefree survival, disease-specific survival and overall survival were 82.9%, 43.9%, 56.9% and 53.9%, respectively. Preoperative radiochemotherapy was feasible in our group of patients and had acceptable toxicity. Majority of patients achieved down-staging, allowing greater proportion of radical resections (R0), which are essential for patientsʼ cure.
Keywords: neoadjuvant radiochemotherapy, perioperative chemotherapy, chemotherapy, adenocarcinoma, carcinoma, surgery
Published in DiRROS: 23.04.2024; Views: 113; Downloads: 31
.pdf Full text (1,18 MB)

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Stereotaktična radioterapija za zdravljenje refraktarne prekatne tahikardije: prikaz primerov
Tamara Jarm, Krištof Knap, Bor Antolič, Boštjan Berlot, Rihard Hudej, Aljaša Jenko, Ajra Šečerov Ermenc, Jasna But-Hadžić, Ivica Ratoša, 2023, professional article

Abstract: Stereotaktična radioterapija aritmij (STAR) predstavlja novo in obetavno možnost za bolnike z refraktarno prekatno tahikardijo, ki je odporna proti konvencionalnim metodam zdravljenja. STAR omogoča natančno neinvazivno ablacijo aritmogenega substrata ob minimalni prizadetosti sosednjih organov. Ta metoda zdravljenja je uporabna za bolnike, pri katerih je tarčno tkivo s katetrsko ablacijo nedosegljivo, pogosti šoki implantabilnega kardioverter-defibrilatorja pa močno nižajo njihovo kakovost življenja ali kadar sta ti metodi zdravljenja zaradi slabega zdravstvenega stanja kontraindicirani. Tarčo obsevanja (predel levega prekata) natančno opredelimo s predhodno slikovno diagnostiko, elektrokardiogramom, posnetki prekatne tahikardije in po potrebi invazivnim ali neinvazivnim elektrofiziološkim mapiranjem srca. Po pripravi na obsevanje na simulatorju sledi enkratno obsevanje z visokim odmerkom 25 Gy, ki je trenutno edina standardna frakcionacija. Bolniki obsevanje dobro prenašajo. Dosedanje raziskave so poročale o dobri učinkovitosti zdravljenja z bistvenim zmanjšanjem pogostosti epizod prekatne tahikardije in brez večjih neželenih učinkov. Poročamo o prvi skupini štirih bolnikov z visokorizično refraktarno prekatno tahikardijo, ki so bili zdravljeni s stereotaktično radioterapijo na Onkološkem inštitutu Ljubljana. Izvedba STAR se je izkazala kot učinkovita metoda z nizko stopnjo akutnih neželenih učinkov in predstavlja novo možnost obravnave te ranljive skupine bolnikov v slovenskem prostoru.
Keywords: stereotaktična radioterapija, aritmije, prekatna tahikardija, radioablacija srca
Published in DiRROS: 26.02.2024; Views: 175; Downloads: 46
.pdf Full text (146,07 KB)

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Protibolečinsko obsevanje kostnih zasevkov
Eva Pribožič, Ivica Ratoša, Jasna But-Hadžić, 2023, other scientific articles

Abstract: Kostni zasevki povzročajo bolečino, ki vpliva na kakovost življenja bolnika in lahko vodijo do zapletov, ki zahtevajo urgentno ukrepanje. Ko zaradi kostnih zasevkov grozi oziroma je prisoten patološki zlom ali maligna kompresija hrbtenjače, je nujno oceniti, ali bolnik potrebuje kirurško intervencijo, ki ji sledi pooperativno obsevanje. Kadar bolnik ni kandidat za operativno zdravljenje, se priporoča urgentno obsevanje. Pri bolečih kostnih zasevkih, brez grozečega oziroma prisotnega patološkega zloma ali maligne utesnitve hrbtenjače, ne glede na velikost samega zasevka, prvi pristop zdravljenja bolečine predstavlja farmakološko zdravljenje, ki ga podpre in dopolni protibolečinsko paliativno obsevanje. Pri paliativnem obsevanju so celokupne obsevalne doze nizke, obsevanje je izvedeno v enem odmerku ali v kratkih obsevalnih režimih. Bolniki, ki ne odgovorijo na prvo obsevanje, ali se jim bolečina ponovi, so lahko varno ponovno obsevani na istem mestu. Na Onkološkem inštitutu Ljubljana smo opravili retrospektivni pregled paliativnih obsevanj kosti med leti 2018 – 2021. Letno obsevamo 800 kostnih zasevkov, upažamo pa upad števila obsevanj. Najpogostejša frakcionacija je 5 x 4 Gy, samo 10% bolnikov pa prejme obsevanje v enem odmerku. Protibolečinsko obsevanje kosti je učinkovito, stroškovno učinkovito in varno. Pomembno je prepoznati bolnike, ki bi imeli korist od protibolečinskega obsevanja, in jih napotiti na konzilij. S poenostavitvijo radioterapevtskih postopkov in odločitvijo za obsevanje v enem odmerku, je lahko obsevalno zdravljenje bolniku prijaznejše in dostopnejše.
Keywords: kostni zasevki, bolečina, paliativno obsevanje, frakcionacija
Published in DiRROS: 26.02.2024; Views: 198; Downloads: 42
.pdf Full text (202,07 KB)

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Obsevanje pri razsejanem raku dojk
Ivica Ratoša, 2023, published professional conference contribution

Keywords: rak dojk, obsevanje raka, radioterapija
Published in DiRROS: 08.01.2024; Views: 214; Downloads: 57
.pdf Full text (1,59 MB)

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Stereotaktično obsevanje kostnih zasevkov : rezultati zdravljenja na Onkološkem inštitutu Ljubljana
Alenka Čulk, Anja Rankovec, Janja Sedlar, Ivica Ratoša, Jasna But-Hadžić, 2023, published scientific conference contribution abstract

Keywords: obsevanje, kostni zasevki, radioterapija
Published in DiRROS: 19.06.2023; Views: 362; Downloads: 146
.pdf Full text (332,20 KB)
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Varnost trastuzumab emtanzina v dopolnilnem zdravljenju zgodnjega HER2-pozitivnega raka dojk : podatki iz klinične prakse
Tina Pavlin, Maša Auprih, Eva Pribožič, Ivica Ratoša, Simona Borštnar, 2022, published professional conference contribution abstract

Keywords: onkologija, rak dojke, kemoterapija
Published in DiRROS: 09.02.2023; Views: 452; Downloads: 108
.pdf Full text (45,66 KB)

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