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BACKGROUND: Multiple primary cancers are rare occurrences that can involve either metachronous or synchronous development. It is particularly rare for an individual to have more than two primary cancers. In this report, we present a case study of an elderly man who was diagnosed with three heterochronous cancers in the renal pelvis, bladder, and colon. CASE SUMMARY: On December 30, 2014, a 51-year-old Chinese man was admitted to our hospital with complaints of intermittent painless gross hematuria for the preceding week. A computed tomography (CT) scan revealed wall thickening in the left ureter's upper segment, while a CT urography revealed a left renal pelvis tumor. A successful laparoscopic radical resection of the left renal pelvis tumor was subsequently performed at Shanghai Zhongshan Hospital in January 2015. The pathological findings after the surgery revealed a low-grade papillary urothelial carcinoma of the renal pelvis. The final pathological tumor stage was pT1N0M0. After surgery, this patient received 6 cycles of intravenous chemotherapy with gemcitabine and carboplatin, as well as bladder infusion therapy with gemcitabine. On December 18, 2017, the patient was admitted once again to our hospital with a one-day history of painless gross hematuria. A CT scan showed the presence of a space-occupying lesion on the posterior wall of bladder. Cystoscopic examination revealed multiple tumors in the bladder and right cutaneous ureterostomy was performed under general anesthesia on December 29, 2017. The postoperative pathological findings disclosed multifocal papillary urothelial carcinoma of the bladder (maximum size 3.7 cm × 2.6 cm). The bladder cancer was considered a metastasis of the renal pelvis cancer after surgery. The pathological tumor stage was pT1N0M1. The patient refused chemotherapy after surgery. After another six years, the patient returned on February 28, 2023, complaining of periumbilical pain that had lasted six days. This time, a CT scan of the abdomen showed a tumor in the ascending colon, but a subsequent colonoscopy examination indicated a tumor in the descending colon. On March 12, 2023, a subtotal colectomy and an ileosigmoidal anastomosis were carried out under general anesthesia. Postoperative pathological findings revealed that all three tumors were adenocarcinomas. The final pathological tumor stage was pT3N0M0. The patient had an uneventful postoperative recovery and was discharged without complications. CONCLUSION: The case of this elderly man presents a rare occurrence of metachronous primary cancers in the renal pelvis and colon. Bladder cancer is considered a metastasis of renal pelvis cancer after surgery. Optimal treatment can be implemented by evaluating the patient's histological features, clinical history, and tumor distribution correctly.

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OBJECTIVE: In the setting of similar outcomes, quality of life (QOL) measures can be utilized to compare treatment modalities in head and neck squamous cell carcinoma (HNSCC). We evaluate QOL and symptoms in patients treated for primary, second primary, and recurrent HNSCC. STUDY DESIGN: Retrospective cohort study. SETTING: Head and neck cancer survivorship clinic. METHODS: We identified patients seen between 2016 and 2019. QOL and symptoms were assessed with the University of Washington Quality of Life (UW-QOL) questionnaire, 10-item Eating Assessment Tool, 8-item Patient Health Questionnaire, 7-item Generalized Anxiety Disorder, and Neck Disability Index. Regression analysis was utilized to explore associations and compare QOL outcomes. RESULTS: Our cohort comprised 662 patients: 546 with primary HNSCC, 34 with second primary HNSCC, and 82 with recurrent HNSCC. Multimodality therapy was associated with lower UW-QOL Physical Subscale (UW-QOL-PS) vs single modality: chemoradiation therapy (-12.17 [95% CI, -16.57 to -7.78]) and surgery + postadjuvant treatment (-12.11 [-16.06 to -8.16]). Multimodality therapy was also associated with lower UW-QOL Social-Emotional Subscale (UW-QOL-SS): chemoradiation therapy (-6.70 [-11.41 to -1.99]) and surgery + postadjuvant treatment (-7.41 [-11.63 to -3.19]). Recurrence (-14.42 [-18.80 to -10.04]) and second primary (-11.15 [-17.71 to -4.59]) demonstrated lower UW-QOL-PS vs primary. Radiation for recurrence or second primary had worse UW-QOL-PS (-10.43 [-19.27 to -1.59]) and UW-QOL-SS (-10.58 [-18.76 to -1.54]) and higher Eating Assessment Tool (6.08 [1.39-10.77]) than surgery alone. Surgery + postadjuvant treatment showed worse UW-QOL-PS (-12.65 [-23.76 to -1.54]) and UW-QOL-SS (-12.20 [-22.38 to -2.03]). CONCLUSION: Multimodality therapy, particularly with recurrent and second primary HNSCC, is more likely to contribute to diminished QOL and symptoms. This important consideration should play a role in framing informed discussions with patients regarding treatment.

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Multiple primary cancer is a condition where multiple occurrences of different malignancies occur in the same individual. As there is a rise in the long-term survival of patients, multiple primary cancer is now not a rare entity. To see four different tumors in the same patient is very rare, and here, we report the case of a 60-year-old female patient with quadruple primary cancer of bilateral breast, esophagus, and sarcoma of the leg.

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Lung surgeries following pneumonectomy using veno-venous extracorporeal membrane oxygenation (V-V ECMO) are described in the literature. The authors report a 62-year-old man with bilateral metachronous primary multiple lung cancer after previous extended lower lobectomy combined with sublobar resection of the upper lobe for squamous cell carcinoma of the left lung. Despite satisfactory functional status and heart function, the patient had poor lung function. Therefore, we decided to increase safety of resection using extracorporeal respiratory support. Extended right lower lobectomy was carried out under V-V ECMO. Surgery was followed by intrapleural bleeding that required urgent surgical hemostasis with completion of perioperative V-V ECMO. Postoperative ventilation lasted for 33 days but the patient was discharged later in a satisfactory condition.

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Objective: To retrospectively analyze the clinical characters and prognosis of the patients with Esophageal Squamous Cell Carcinomas as First Primary Malignancy (ESCCFPM), which will help us better understand the relationship between Esophageal Squamous Cell Carcinoma (ESCC) and other cancers, and to provide appropriate research evidence for the clinical diagnosis and treatment. Methods: The clinicopathological and follow-up data of 540 Patients with ESCCFPM between January 1, 2004 and December 31, 2016 were collected from the Surveillance, Epidemiology and End Results (SEER) database of National Cancer Institute. The Kaplan-Meier method was used to determine Overall Survival (OS) curves of ESCC patients, and the Log-Rank test was used to estimate differences in survival. The Cox proportional hazards models were adopted for the prognosis analyses. Results: Regarding the number of multiple primary malignancies (MPMs), 491 had two malignancies, 42 had three malignancies and 7 had four malignancies. ESCCFPM is more common among males. The high incidence age is between 61 and 80 years old. Tumors of the respiratory system (36.9%), were the most common MPMs followed by digestive system (35.2%) and reproductive system (8.9%). The 1-year, 3-year, 5-year OS rates for patients with ESCCFPM were 76.9%, 50.4% and 38.9%, respectively. The age of the ESCC diagnosed, T stage, time of occurrence, carcinoma number, lymph node dissection, surgery, radiotherapy and chemotherapy were the prognostic factor of overall survival for ESCCFPM patients. Age, race, T stage, time of occurrence surgery and radiotherapy were independent prognostic factors for the whole cohort by multivariate survival analysis. Conclusion: ESCCFPM,mainly two-lesion cancer, is most commonly found in respiratory system and digestive systems. Enhanced follow-up of respiratory and digestive tumors in ESCCFPM patients aged 61-80 may help identify multiple primary malignancies. Surgery, radiotherapy and chemotherapy may improve overall survival for ESCCFPM patients.

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INTRODUCTION: In patients with non-small cell lung cancer (NSCLC) who present with multiple pulmonary nodules, it is often difficult to distinguish metastatic disease from synchronous primary lung cancers (SPLC). We sought to evaluate clinical outcomes after stereotactic body radiotherapy (SBRT) alone to synchronous primary lesions. MATERIAL AND METHODS: Patients with synchronous AJCC 8th Edition Stage IA-IIA NSCLC and treated with stereotactic body radiation therapy (SBRT) to all lesions between 2009-2018 were reviewed. SPLC was defined as patients having received two courses of SBRT within 180 days for treatment of separate early stage tumors. In total, 36 patients with 73 lesions were included. Overall survival (OS), progression-free survival (PFS), cumulative incidence of local failure (LF), and regional/distant failure (R/DF) were estimated and compared with a control cohort of solitary early stage NSCLC patients. RESULTS: Median PFS was 38.8 months (95% CI 14.3-not reached [NR]); 3-year PFS rates were 50.6% (35.6-72.1). Median OS was 45.9 months (95% CI: 35.9-NR); 3-year OS was 63.0% (47.4-83.8). Three-year cumulative incidence of LF and R/DF was 6.6% (3.7-13.9) and 35.7% (19.3-52.1), respectively. Patients with SPLC were compared to a control group (n = 272) of patients treated for a solitary early stage NSCLC. There was no statistically significant difference in PFS (p = .91) or OS (p = .43). Evaluation of the patterns of failure showed a trend for worse cumulative incidence of R/DF in SPLC patients as compared to solitary early stage NSCLC (p = .06). CONCLUSION: SBRT alone to multiple lung tumors with SPLC results in comparable PFS, OS, and LF rates to a cohort of patients treated for solitary early stage NSCLC. Those with SPLC had non-significantly higher R/DF. Patients with SPLC should be followed closely for failure and possible salvage therapy.

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To distinguish whether multiple lung nodules represent multiple primary lung cancers (MPLC) or intrapulmonary metastases (IPM) is crucial for staging and subsequent therapy. We herein present the first report of a patient with two simultaneously resected metachronous lung adenocarcinomas in the right upper lobe, each with a distinct driver mutation in the KRAS gene identified by targeted next generation sequencing (NGS). The nodules appeared chronologically metachronous, with a 3.7 year interval. Histopathology showed two histologically identical adenocarcinomas, without lymph node metastases. It was hard to decide whether they should be classified as either MPLC or IPM based only on the clinicopathological criteria. Sequencing further revealed distinct KRAS mutation in each tumor, with one tumor harboring the KRAS-G12C mutation, and the other tumor harboring the KRAS-Q61H mutation. Incorporation of the molecular data cleared the confusion with regard to staging and spared this patient from adjuvant therapy. This case highlights that molecular profiling allows for better differentiation between MPLC and IPM than histopathology alone. KEY POINTS: To the best of our knowledge, this is the first case of multiple primary lung cancers harboring distinct KRAS mutations. The case highlights the importance of incorporating molecular profiling using NGS along with the clinicopathological criteria in classifying multiple lung tumors.

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INTRODUCTION: Breast cancer is the most common malignancy among women all over the world, which accounts to 25% of all cancers. In known cases of breast cancer, the risk of developing another denovo malignancy is more when compared to low risk groups, which might be due to common environmental risk factors, treatment induced risk factors, Genetic susceptibility for mutations, presence of cancer syndromes or better detection due to close surveillance. OBJECTIVE: To study the profile of Metachronous 2nd primary malignancies suspected on 18F-FDG PET CT in known Breast cancer patients. In this Retrospective study from January 2014 to April 2018, all the consecutive patients with known Breast cancer, who were referred to Nuclear Medicine department for 18F- FDG PET CT for follow up evaluation were included. Suspected 2nd primary malignancies were correlated with Histopathological examination (HPE). RESULTS: During the study period, a total of 233 Breast cancer patients (all are females), with a mean age of 54.2+13.4 years were studied. On 18F-FDG PET CT scan, suspicion for 2nd primary malignancy was observed in 37 patients. HPE was done in 28/37 patients at the site of suspected lesions. 15/28 were positive for second malignancy, and remaining 13/28 were either a benign pathology or a part of metastatic disease from the primary breast cancer. The sites of 2nd primary malignancies included Contralateral breast in 8/15 (53.3%), Ovary in 2/15 (13.3%), Endometrium in 2/15 (13.3%), Lung in 1/15 (6.6%), Stomach in 1/15 (6.6%) and Urinary bladder in 1/15 (6.6%) patients respectively. The incidence of metachronous 2nd primaries in breast cancer is 67.3 per 1000 breast cancer patients. CONCLUSION: Metachronous second primary cancers in breast cancer patients are not very rare. A high imaging suspicion on 18F-FDG PET CT helps in early detection of 2nd primary cancer, thereby facilitating early and appropriate management.

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OBJECTIVES: This study analyzes the incidence of multiple primary malignant neoplasms (MPN) in patients with testicular cancer (TC), the results are compared with literature findings and assess the rarest subgroup of patients with MPN. PATIENTS AND METHODS: Clinical data of 1870 patients with TC treated or followed up in a single center in the period of 5/1970-12/2018 were collected and analyzed retrospectively in focus of the occurrence of MPN. RESULTS: The overall incidence of MPN was 150 (8.02 %). There were 89 cases of bilateral TC (59.3 %), of these 8 cases were synchronous (diagnosed within three months period from the primary diagnosis) and 81 metachronous (9 % and 91 % respectively). Non-testicular other primary malignancies (OPM) occurred in 61 cases (40.7 %), of which 59 cases were metachronous (96.7 %) and two cases were synchronous (3.3 %). Metachronous malignancies included mainly prostate cancer (n = 17 patients), kidney cancer (n = 13 patients) and colorectal cancer (n = 12 patients). Synchronous OPM was found in two patients. CONCLUSION: In our study we registered two cases of synchronous OPM, both histologically clear cell renal cancer. We have analyzed clinical characteristics, diagnosis and treatment strategies of synchronous OPM, in order to improve its diagnosis and therapy (Fig. 3, Ref. 22).

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ABSTRACT: Multiple salivary gland tumors represent an unusual event characterized by the development of composite lesions originated from minor or major salivary glands. These neoplasms can be categorized into three perspectives: Histologic type, time of appearance and topographic distribution. We report an unusual case of a 73-year-old black man with an acinic cell carcinoma (ACC) of the oral mucosa discovered incidentally during surgical removal of an adjacent mucocele. Approximately one year after the first consultation, the patient was seen at the local cancer reference center with a third lesion that was diagnosed as an adenoid cystic carcinoma (AdCC) of the upper lip. The patient underwent surgical reconstruction of the treated areas and has been free of the disease for the past year. To our knowledge, the combination of ACC and AdCC in intraoral sites has not been reported in the literature.

RESUMEN: Los tumores de glándulas salivales múltiples representan un evento inusual caracterizado por el desarrollo de lesiones compuestas, originadas en glándulas salivales menores o mayores. Estos neoplasmas se pueden categorizar en tres perspectivas: tipo histológico, tiempo de aparición y distribución topográfica. Reportamos un caso inusual de un hombre negro de 73 años con un carcinoma de célula acínica (ACC) de la mucosa oral descubierta incidentalmente durante la extirpación quirúrgica de un mucocele adyacente. Aproximadamente un año después de la primera consulta, el paciente se presentó en el centro de referencia del cáncer local con una tercera lesión que fue diagnosticada como carcinoma adenoide quístico (AdCC) del labio superior. El paciente se sometió a la reconstrucción quirúrgica de las áreas tratadas y durante el último año no ha presentado recurrencia de la enfermedad. De acuerdo a nuestro conocimiento la combinación de ACC y AdCC en sitios intraorales no se ha informado en la literatura.

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BACKGROUND: Not-infrequently patients with head and neck cancer are also diagnosed with synchronous lung cancer or metachronous primary lung cancer, which complicates the treatment decisions and prognosis. METHODS: Patients were identified from a database of patients with head and neck cancer with second primary non-small cell lung cancer (NSCLC). RESULTS: Thirty-four eligible patients (15 with synchronous lung cancer and 19 with metachronous lung cancer) were identified. Thirteen of 15 patients with synchronous lung cancer received curative intent treatment for head and neck cancer first. Six of 15 patients were in complete remission, 5 of 15 patients had died, and 4 were alive with progressive disease. Median time between 2 diagnoses was 47 months in the metachronous lung cancer group. Twelve patients had died, 3 were alive with disease, and 4 were lost to follow-up. Median survival from the time of lung cancer diagnosis was 13 months with a trend to better survival with synchronous lung cancer (15 vs 11 months; p = .11). CONCLUSION: Aggressive multidisciplinary management of second primary lung malignancies in patients with head and neck cancer can result in respectable long-term disease control particularly in patients with synchronous lung cancer. © 2017 Wiley Periodicals, Inc. Head Neck 39: 1544-1549, 2017.

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