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PURPOSE: RENORT is a novel data mining application developed to extract relevant clinical data from oncology information systems (OIS; ARIA and Mosaiq) used in radiation oncology (RO). METHODS/PATIENTS: We used RENORT to extract demographic and clinical data from the OIS of all patients treated at the RO Department at the General Hospital of Valencia during the year 2019. RESULTS: A total of 1158 treatments were performed. The female/male ratio was 39.3%/60.7%, with a mean age of 66 years. The mean waiting time between the treatment decision/proposal to the first visit was 10.1 days. Mean duration of the treatment preparation process was 21 days. Most patients (90.4%) completed treatment within the prescribed time ± 7 days. The most common sites/treatment types were: metastatic/palliative treatments (n = 300; 25.9%), breast (209; 18.0%), genitourinary (195; 16.8%), digestive (116; 10.0%), thoracic (104; 9.0%), head and neck (62; 5.4%), and skin cancer (51; 4.4%). The distribution according to treatment intent was as follows: palliative (n = 266; 23.0%), adjuvant curative (335; 28.9%), radical without adjuvant treatment (229; 19.8%), radical with concomitant treatment (188; 16.2%), curative neoadjuvant (70; 6.0%), salvage radiotherapy (61; 5.3%); and reirradiation (9; 0.8%). The most common treatment techniques were IMRT/VMAT with IGRT (n = 468; 40.4%), 3D-CRT with IGRT (421; 36.4%), SBRT (127; 11.0%), 2DRT (57; 4.9%), and SFRT (56; 4.8%). A mean of 15.9 fractions were administered per treatment. Hypofractionated schemes were used in 100% of radical intent breast and prostate cancer treatments. CONCLUSIONS: The RENORT application facilitates data retrieval from oncology information systems to allow for a comprehensive determination of the real role of radiotherapy in the treatment of cancer patients. This application is valuable to identify patterns of care and to assess treatment efficacy.

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RESUMEN Introducción: las metástasis cerebrales cuando aparecen en el curso de un cáncer de pulmón reportan una precaria supervivencia al paciente, los tratamientos incluyen la cirugía o radiocirurgía. La radioterapia holocraneal constituye el estándar cuando los tratamientos locales no son posibles. Se han reportado respuestas del cerebro a la quimioterapia a un nivel comparable al de la enfermedad extra craneal, por lo que la terapia sistémica es una opción razonable para los pacientes sin síntomas neurológicos, o con síntomas relativamente controlados. Objetivo: evaluar la supervivencia de los pacientes según esquemas de tratamientos recibidos. Materiales y métodos: se realizó un estudio descriptivo y retrospectivo en pacientes con diagnóstico cito-histológico de cáncer de pulmón y metástasis cerebral, atendidos en la consulta externa del Centro Oncológico Provincial de Matanzas, en el período comprendido desde enero del 2013 a diciembre del 2016. Para obtener los datos de los tratamientos realizados, determinar fecha de fallecimiento o de última noticia del paciente se utilizaron las historias clínicas de los enfermos y las bases de datos del Servicio de Radioterapia del Centro. Resultados: el 86,5% de los pacientes recibieron tratamiento con quimioterapia de primera línea, el 76% radioterapia al cerebro y el 61,5% con nimotuzumab. Conclusiones: la aplicación de la quimioterapia, la radioterapia holocraneal y la inmunoterapia tuvieron un valor significativo, proporcionando un aumento de la supervivencia de los pacientes estudiados.

ABSTRACT Introduction: brain metastasis report a precarious survival when they appear during the course of a lung cancer. The treatments include surgery or radiosurgery. Whole brain radiotherapy is the standard treatment when the local ones are not possible. There are reports of brain answer to chemotherapy at the level of extra brain diseases; therefore, systemic therapy is a reasonable option for the patients without neurological symptoms, or with relatively controlled symptoms. Objective: to assess the patients´ survival according to the schemes of the received treatments. Materials and methods: a retrospective descriptive study was carried out in patients with cytohistological diagnosis of lung cancer and brain metastasis, who attended the external consultation of the Provincial Oncological Center of Matanzas in the period from January 2013 to December 2016. The clinical records and databases of the Radiotherapy Service of the Center were used to obtain the data of the treatments carried out, the patients' date of dead or of the last information about them. Results: 86.5 % of the patients received treatment with front-line chemotherapy, 76 % brain radiotherapy, and 61.5 % with Nimotuzumab. Conclusions: the application of chemotherapy, whole brain radiotherapy and immunotherapy achieved great improvement, increasing the survival of the studied patients.

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Metastatic disease is a lethal stage of cancer progression. It is characterized by the spread of aberrant cells from a primary tumor to distant tissues like the bone. Several treatments are used to deal with bone metastases formation, but they are palliative since the disease is considered incurable. Computational and mathematical models are used to understand the underlying mechanisms of how bone metastasis evolves. In this way, new therapies aiming to reduce or eliminate the metastatic burden in the bone tissue may be proposed. We present an optimal control approach to analyze some common treatments for bone metastasis. In particular, we focus on denosumab treatment, an anti-resorptive therapy, and radiotherapy treatment which has a cell killing action. We base our work in a variant of an existing model introduced by Komarova. The new model incorporates a logistic equation in order to describe the bone metastasis evolution. We provide proofs of existence and uniqueness of solutions to the corresponding optimal control problems for each treatment. Moreover, we present some numerical simulations to analyze the effectiveness of both treatments when different interactions between cancer and bone cells occur. A discussion of the obtained results is provided.

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BACKGROUND: To explore the efficacy and patterns of treatment failure of radical radiotherapy in newly diagnosed oligo-metastatic nasopharyngeal carcinoma patients. METHODS: We included 39 newly diagnosed oligo-metastatic nasopharyngeal carcinoma patients who received radical radiotherapy and chemotherapy in Zhejiang Cancer Hospital. Treatment and prognosis information were collected. The Kaplan-Meier methods and Cox proportional hazards models were used to calculate survival rates and analyze prognostic factors. RESULTS: After a median follow-up time of 38 months, the 1-, 3-, and 5-year overall survival rates were 97, 70, and 57.9%, while the 1-, 3-, and 5-year progression-free survival rates were 87, 59, and 50.9%, respectively. Age, numbers of metastases lesions, cycles, and schemes of chemotherapy were independent prognostic factors of the overall survival. Patients with no more than three metastasis lesions had a higher survival rate than those with ≥ 3 metastatic lesions (P = 0.023). More than four cycles chemotherapy provide a higher survival rate than less than four cycles. Chemotherapy including docetaxel had a significantly survival advantages (P = 0.041). CONCLUSION: Radical radiotherapy is important for newly diagnosed oligo-metastatic nasopharyngeal carcinoma patients, which can still achieve long-term survival after chemo-radiotherapy.

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BACKGROUND: To investigate the efficacy and toxicity of 68Ga-PSMA-HBED-CC (68Ga-PSMA) PET-CT-guided RT in the treatment of oligometastatic prostate cancer retrospectively. METHODS: A total of 23 prostate cancer patients with biochemical relapse, of which 13 were castration sensitive (CS) and 10 castration resistant (CR), were treated with intensity-modulated and image-guided RT (IMRT-IGRT) on ≤3 metastases detected by 68Ga PSMA PET-CT. Androgen deprivation therapy was continued in CR patients. RESULTS: A total of 38 metastases were treated. The involved sites were pelvic bone (n = 16), pelvic lymph nodes (n = 11), paraaortic lymph nodes (n = 6), ribs (n = 3) and vertebral body (n = 2). The median PSA prior to RT was 1.1 ng/mL (range 0.1-29.0 ng/mL). A median dose of 43.5 Gy (range 30-64 Gy) was delivered by IMRT-IGRT in 12-27 fractions. At a median follow-up of 7 months (range 2-17 months), 19 patients (83%) were in remission. Four patients (17%) developed distant recurrences. The actuarial 1-year LC, PFS and OS rates were 100, 51 (95% CI 8-83%) and 100%. Univariate analysis demonstrated a statistically significantly better PFS in CS patients as compared to CR patients (1-year PFS 67 vs. 0%, p < 0.01). One patient experienced grade 2 acute gastrointestinal toxicity. Grade 3 or more toxicity events were not observed. CONCLUSIONS: By providing optimal LC, low toxicity and a promising PFS in CS patients, the current retrospective study illustrated that 68Ga PSMA PET-CT-guided RT may be an attractive treatment strategy in patients with oligometastatic prostate cancer. Validation by randomized trials is eagerly awaited.

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Objetivo: Describir un caso raro de una paciente previamente diagnosticada con cáncer de mama que evolucionó después de algunos años con metástasis intraorbitaria. Métodos: Relato del caso y revisión de literatura. Resultados: La correlación del diagnóstico previo de neoplasia de mama y la presencia de múltiples lesiones en la órbita y regiones adjacentes ha permitido concluir que la paciente presentaba enfermedad metastásica. Las metástasis se presentan como manifestaciones cada vez más frecuentes en enfermos oncológicos. La órbita y estruturas próximas constituyen topografías poco usuales de diseminaciónde células neoplásicas y manifestaciones iniciales pueden mimetizar otras condiciones, retrasando el diagnóstico. Como se trataban de pequeñas lesiones, se ha optado por radioterapia como tratamiento único. Después del término la paciente evolucionó con regresión de sintomatología. Conclusiones: Aunque infrecuentes, manifestaciones oculares pueden ocurrir en enfermos oncológicos y la investigación de enfermedad metastático de la órbita es esencial para el seguimiento adecuado.

Objective: Description a rare case of a patient with previous diagnosis of breast cancer that evolved years after with orbital metastasis. Method: Case report and literature review. Results: The relation between the previous diagnosis of breast cancer and the presence of multiple orbital and adjacent lesions allowed concluding that the patient presented metastatic disease. Metastasis presented as a common manifestation in oncological patients. Orbit and neighboring structures constitute unusualsite of neoplastic cells dissemination and initial manifestations could mimic other conditions, which can slow diagnosis. As they were small lesions that are close to noble structures, it was opted by performing exclusive radiotherapy. After the end of treatment, the patient referred improvement of her symptoms. Conclusions: Although unusual, ocular manifestations could occur in oncological patients and orbit metastatic disease investigation is essential to the proper follow.

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OBJECTIVE:: To provide a quantitative profile of the indications and use of stereotactic body radiotherapy (SBRT) in a developing country oncology-based institution. In addition, to describe the patients' and treatment characteristics, and to provide a temporal analysis. METHOD:: SBRT patients treated from 2007 to 2015 were retrospectively evaluated by two independently investigators. Data were stratified and compared in two periods: first experience (FE) (May 2007 to April 2011), and following experience (FollowE) (May 2011 to April 2015). The following parameters were compared between the groups: total number of treated patients and lesions, treatment site, additional image fusion used, formal protocol adoption, and SBRT planning technique. RESULTS:: One hundred and seventy-six (176) patients with 191 lesions were treated: 34 (18%) lesions in the FE and 157 (82%) lesions in FollowE. The majority of lesions were metastases (60.3%), and lung (60.2%) was the most common treatment site, followed by spine (31%), and others (8.8%). An average of 1.4 (±0.6) additional imaging exams for delineation was performed. Conformal 3D radiotherapy planning technique was used in 64.4%, and intensity modulated radiotherapy (IMRT) or volumetric-modulated arc therapy (VMAT) in the remaining 35.6% (p=0.0001). Higher rates of curative treatments were observed in FE, as well as more lung lesions, patients ≥ 70 years, 3D conformal, number of additional images and ECOG 0, and all presented p<0.05. The global rate of protocol statement was 79%, lung treatment being the most stated. CONCLUSION:: SBRT application is rapidly increasing in our setting. Treatment sites and planning techniques are becoming more diversified and complex.

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Summary Objective: To provide a quantitative profile of the indications and use of stereotactic body radiotherapy (SBRT) in a developing country oncology-based institution. In addition, to describe the patients' and treatment characteristics, and to provide a temporal analysis. Method: SBRT patients treated from 2007 to 2015 were retrospectively evaluated by two independently investigators. Data were stratified and compared in two periods: first experience (FE) (May 2007 to April 2011), and following experience (FollowE) (May 2011 to April 2015). The following parameters were compared between the groups: total number of treated patients and lesions, treatment site, additional image fusion used, formal protocol adoption, and SBRT planning technique. Results: One hundred and seventy-six (176) patients with 191 lesions were treated: 34 (18%) lesions in the FE and 157 (82%) lesions in FollowE. The majority of lesions were metastases (60.3%), and lung (60.2%) was the most common treatment site, followed by spine (31%), and others (8.8%). An average of 1.4 (±0.6) additional imaging exams for delineation was performed. Conformal 3D radiotherapy planning technique was used in 64.4%, and intensity modulated radiotherapy (IMRT) or volumetric-modulated arc therapy (VMAT) in the remaining 35.6% (p=0.0001). Higher rates of curative treatments were observed in FE, as well as more lung lesions, patients ≥ 70 years, 3D conformal, number of additional images and ECOG 0, and all presented p<0.05. The global rate of protocol statement was 79%, lung treatment being the most stated. Conclusion: SBRT application is rapidly increasing in our setting. Treatment sites and planning techniques are becoming more diversified and complex.

Resumo Objetivo: realizar uma análise quantitativa das indicações e do uso de SBRT (stereotactic body radiotherapy) em uma instituição filantrópica. Além disso, descrever temporalmente as características dos pacientes e tratamentos. Método: retrospectivamente, foram coletados, por dois investigadores independentes, os dados de todos os pacientes tratados com SBRT na instituição no período de maio de 2007 a fevereiro de 2015. Dados foram estratificados e comparados em dois períodos: inicial (P1) (maio de 2007 a abril de 2011) e período seguinte (P2) (maio de 2011 a abril de 2015). Os seguintes parâmetros foram comparados entre os grupos: número total de pacientes e lesões tratadas, local de tratamento, uso de imagens adicionais, adoção formal de protocolo e técnica de planejamento. Resultados: foram avaliados 176 pacientes e 191 lesões, sendo 34 (18%) no P1 e 157 (82%) no P2, tratados com SBRT. A maioria das lesões eram metastáticas (60,3%), sendo pulmão o sítio mais prevalente, contabilizando 115/191 (60,2%) lesões, seguida de lesões ósseas (30,8%). Uma média de 1,4 (±0,6) exame de imagem adicional foi usada para o delineamento. Uso formal de protocolo/recomendações foi descrito em 79% das lesões. A técnica 3D-conformada (3DCRT - three-dimensional conformal radiotherapy) foi a mais utilizada para planejamento [123/191 (64,4%) lesões] quando comparada à intensidade modulada e ao arco dinâmico (p=0.0001). O P1 esteve associado a maior número de lesões primárias tratadas (OR 2,09; p=0,0005), lesões pulmonares (OR 3,85; p=0,0198), pacientes ≥ 70 anos (OR 2,77; p=0,0005), uso de planejamento 3D (OR 16; p=0,0001), menor uso de imagens adicionais [0 ou 1 (versus > 1)] (OR 7,5; p=0,0001) e ECOG 0 (vs. > 0) (OR 0,21; p=0,0431). Conclusão: o uso de SBRT aumentou ao longo do tempo na instituição. No P2, notou-se uma evolução técnica, com indicações mais diferenciadas, maior uso de imagens auxiliares para definição do alvo e técnicas de planejamento mais sofisticadas.

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