A kevert nagysejtes neuroendokrin carcinoma ritka, nem kissejtes morfológiájú tüdőrák, melynek kezelésére kevés kutatás fókuszál. Ezen esetek patogenezisében az anaplasticus lymphoma kináz (ALK) fúziós gén szerepe ritkaság, ugyanakkor a mutáció jelenléte esetén az ALK-inhibitorok ígéretes terápiás lehetőséget jelentenek a citosztatikumok helyett. Az 52 éves, tünetmentes nőnél rutin mellkasröntgenvizsgálat során térfoglaló folyamat merült fel, melyet a mellkasi komputertomográfiás vizsgálat megerősített. A tumort lobectomia révén eltávolították. A szövettani vizsgálat papillaris predomináns tüdő adenocarcinomát igazolt, melyet posztoperatív kemoterápia és besugárzás követett. 3 évvel később központi idegrendszeri tünetek miatt koponya képalkotó vizsgálat történt, melynek során áttét igazolódott. Az agyi metasztázisok eltávolításra kerültek. A szövettani vizsgálat nagysejtes neuroendokrin carcinoma áttétét igazolta. Az áttét és a kimetszett tüdőrészlet metszeteinek újbóli elemzése, illetve a molekuláris vizsgálat alapján ALK-transzlokált, kevert, nagysejtes neuroendokrin carcinomát kórisméztünk. Alectinib (Alecensa)-kezelés indult, melynek hatására az időközben megjelent májáttétek regressziót mutattak. A kontroll radiológiai vizsgálatok a kezelés kezdete óta eltelt 3 évben progressziót nem igazoltak. Az ALK-transzlokáció kimutatása, illetve az ALK-inhibitorok alkalmazásának kutatása elsősorban a tüdő adenocarcinomákra helyezi a hangsúlyt. Esetismertetésünkkel arra szeretnénk felhívni a figyelmet, hogy a kevert, adenocarcinoma-komponenst is tartalmazó, neuroendokrin tumorok esetén is érdemes a ’driver’ mutációk vizsgálata, mivel a célzott kezelés eredményes alternatívát jelenthet. Orv Hetil. 2023; 164(14): 548–554.

Introduction: The use of neoadjuvant therapy (NAT) has been showing an incraesing tendency in the treatment of locally advanced breast cancer. The evaluation of residual cancer could be performed by Residual Cancer Burden (RCB) calculator. The prognostic system takes the two largest diameters of the tumor, the cellularity, the amount of in situ carcinoma, the number of metastatic lymph nodes, and the size of the largest metastatic deposit into account. The aim of our study was to examine the reproducibility of RCB in NAT treated patients. Methods: Patients who were treated with NAT and had resection specimens between 2018 and 2021 were selected. Histological examination was performed by five pathologists. After assessment of the examined variables, RCB points and RCB classes were defined. For statistical analysis, interclass correlation was used (SPSS Statistics V.22.0 software). Results: Altogether 100 patients were included in our retrospective, cohort study (average age: 57 years). In two-thirds of the cases, third generation chemotherapy was used, and mastectomy was performed. Significant concordance was found in the two largest diameters of the tumor (coefficients, 0.984 and 0.973), the cellularity (coefficient, 0.970), and the largest metastatic deposit (coefficient, 0.998). Although the amount of in situ carcinoma proved to be the least reproducible factor, it resulted in almost 90% of agreement (coefficient, 0.873). Regarding RCB points and classes, similar results were observed (coefficients, 0.989 and 0.960). Conclusions: Significant agreement was observed between examiners based on almost all RCB parameters, points, and classes, reflecting the optimal reproducibility of RCB. Therefore, we recommend the use of the calculator in routine histopathological reports in NAT cases.

The prognostic markers of lung squamous cell carcinoma (LSCC) are less investigated. The aim of our study was to evaluate tumour budding (TB), minimal cell nest size, nuclear diameter (ND), and spread through air spaces (STAS) among patients with resected LSCC, semi-quantitatively. Furthermore, we aimed to identify a grading system for the best prognostic stratification of LSCC. Patients who underwent surgical resection at the Department of Surgery, University of Szeged between 2010 and 2016 were included. Follow-up data were collected from medical charts. Morphological characteristics were recorded from histologic revision of slides. Kaplan-Meier analysis, log rank test and Cox proportional-hazards model, ROC curve analysis, and intraclass correlation were utilised. Altogether 220 patients were included. In univariate analysis, higher degree of TB, infiltrative tumour border, larger ND, the presence of single cell invasion (SCI) and STAS were associated with adverse prognosis. Based on our results, we proposed an easily applicable grading scheme focusing on TB, ND, and SCI. In multivariate analysis, the proposed grading system (pOS < 0.001, pRFS < 0.001) and STAS (pOS = 0.008, pRFS < 0.001) were independent prognosticators. Compared to the previously introduced grading systems, ROC curve analysis revealed that the proposed grade had the highest AUC values (AUCOS: 0.83, AUCRFS: 0.78). Each category of the proposed grading system has good (ICC: 0.79–0.88) reproducibility. We validated the prognostic impact of TB, SCI, ND, and STAS in LSCC. We recommend a reproducible grading system combining TB, SCI, and ND for proper prognostic stratification of LSCC patients. Further research is required for validation of this grading scheme.