The impact of primary tumor location (PTL) and age on the risk of developing noncolonic second primary malignancy (SPM) in colon cancer (CC) patients (PTS).

2020 ◽  
Vol 38 (4_suppl) ◽  
pp. 67-67
Author(s):  
Charles Chu ◽  
Albert Y. Lin

67 Background: Colon cancer remains one of the leading causes of cancer death worldwide. There has been a renewing interest in the role of PTL (right- or RS vs. left-sided or LS) in CC for their differences in biology, prognostic and predictive features. Given the increasing incidence of early-onset (age 20-49) CC, coupled with their longer life expectancy, we seek to examine the effects of PTL and age in the development of SPM in a population-based cohort. Methods: Surveillance, Epidemiology, and End Results (SEER) Program data were queried to identify CC PTS diagnosed between 1973-2015 with complete follow-up information and available data on SPM. Using SEER*Stat, we calculated standardized incidence ratios (SIRs) -- the ratio of observed to expected cases of SPM based on incidence data in the general US population and compared by PTL (RS vs. LS) and age of diagnosis (20-49 vs. >49). Results: A total of 269,442 (RS/LS=46.4%/53.6%) CC PTS were obtained. Overall RS, compared with LS, CC PTS have a higher likelihood of developing SPM in all sites (OR: 1.09, 95% CI: 1.08- 1.11 vs. 1.03, 1.02-1.04). RS CC PTS and age 20-49 group, compared with other subgroups, has a much greater likelihood of being diagnosed with the following SPM:small intestine, urinary tract, bile duct, gynecologic (GYN), and stomach cancers, as shown in the Table below. Conclusions: Our results show that the increased risk in non-colonic SPMs in CC PTS is associated with RS CC and age less than 49, suggesting the implications on survivorship care and surveillance of SPMs. Furthermore, there may be a possible overlap with Lynch syndrome in these PTS with SPM given the overlap in the presentation of cancer patterns and early-onset of CC, suggesting the indication for MMR testing. [Table: see text]

2019 ◽  
Vol 39 (6) ◽  
Author(s):  
Wenming Wang

AbstractWe identified patients diagnosed with malignant astrocytoma (MA) as the first of two or more primary malignancies between 1973 and 2015 from Surveillance, Epidemiology and End Results (SEER) database. Multiple primaries-standardized incidence ratio (MP-SIR) was calculated to quantitate the risk of second primary malignancy (SPM). We further identified the risk factors of developing SPM and factors affecting overall survival (OS) in MA patients with SPM. Our results revealed that overall risk of SPM among MA patients was significantly higher than that in general population (SIR: 1.09, 95% confidence interval (CI): 1–1.18, P<0.05). Specific sites where the risk of SPM increased included salivary gland, bone and joints, soft tissue including heart, brain, cranial nerves other nervous system, thyroid, acute non-lymphocytic leukemia and acute myeloid leukemia. Overall risk of SPM in patients aged ≤29 and 30–59 years significantly increased (4.34- and 1.41-fold respectively). Whereas patients aged ≥60 years had a significantly decreased risk of SPM. Patients in the group of latency at 36–59, 60–119 and ≥120 months carried significantly increased overall risk of SPM. Multivariate analysis revealed that age, race, marital status, WHO grade, differentiated grade of cancer tissues, latency was independent predictor of OS in MA patients with SPM, which were all selected into the nomogram. The calibration curve for probability of survival showed good agreement between prediction by nomogram and actual observation. In conclusion, MA survivors should be advised of their increased risk for developing certain cancers in their lifetime. Our study had clinical implications for the surveillance of MA survivors at risk of developing SPM.


2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 8568-8568
Author(s):  
Dipesh Uprety ◽  
Lubina Arjyal ◽  
Swapna Narayana ◽  
Peter James Polewski ◽  
Amir Bista ◽  
...  

8568 Background: Thymoma is a rare neoplasm of anterior mediastinum. Patients often have an indolent disease. The prognosis of limited stage disease is excellent with a 10-year survival rate of 70 to 80%. Data regarding the risk of second primary malignancy in thymoma survivors are limited in recent years. In this study, we aimed to determine the risk of second primary malignancies (SPMs) among patients with limited stage thymoma. Methods: We utilized the Surveillance, Epidemiology and End Results (SEER)-13 registry to identify adult patients (≥ 18 years) with limited stage thymoma. We calculated the risk of SPM, developing ≥ 6 months after an index thymoma diagnosis, using Multiple Primary Standardized Incidence Ratio and an Absolute Excess Risk (AER) between 2004 and 2010. Statistical significance was defined as p < 0.05. Results: The database identified a cohort of 1,544 patients with limited stage thymoma with a median follow-up duration of 107 months (11-281 months). A total of 176 (11.39%) patients developed SPMs with a median latency of 62.5 months (range 6-272 months). Median age at diagnosis of SPM was 69 years (range 25- 96 years). Overall, SPM occurred at an observed to expected (O/E) ratio of 1.53 (95% CI 1.32-1.76), p < 0.001 with an AER of 60.52 per 10,000 patient-years at risk. A significantly increased risk was noted for cancer of lung and bronchus (O/E 1.77, 95% CI 1.21-2.52, p = 0.004; AER 12.17/10,000), skin excluding basal and squamous (O/E 2.09, 95% CI 1.04-3.75, p = 0.03; AER 5.17/10,000), urinary bladder (O/E 2.14, 95% CI 1.17-3.6, p = 0.014; AER 6.72/10,000), thyroid (O/E 3.48, 95% CI 1.4-7.17,p = 0.009; AER 4.49/10,000), and leukemia (O/E 3.26, 95% CI 1.63-5.83, p = 0.001; AER 6.86/10,000), including acute lymphocytic leukemia (O/E 16.09, CI: 1.95-58.11; AER 1.69/10,000), acute myeloid leukemia (O/E 3.83, CI: 1.04-9.8; AER 2.66/10,000) and other acute leukemia (O/E 29.45, CI: 3.57-106.39; AER 1.74/10,000). The risk was not significant for lymphoma (Hodgkin and non-Hodgkin), chronic leukemia, oropharyngeal, digestive tract and hepatobiliary cancer as SPM. Conclusions: The risk for SPMs is significantly increased in patient with thymoma compared to general population. Given the long-term risk of SPM, patient should be followed closely with judicious use of age-appropriate cancer screening.


2021 ◽  
Vol 50 (Supplement_1) ◽  
Author(s):  
Huazhen Yang ◽  
Chengshi Wang ◽  
Donghao Lu ◽  
Huan Song

Abstract Background Cancer diagnosis entails substantial psychological distress and is associated with dramatically increased risks of suicide and psychiatric disorders. However, little is known about the suicide risk among cancer survivors who developed a second primary malignancy (PCa-2). Methods Using the Surveillance, Epidemiology, and End Results database, we conducted a population-based cohort study, including 7,169,704 patients with first primary malignancy (PCa-1) and 686,174 PCa-2 patients diagnosed from January 1, 1975, through December 31, 2016. Compared with patients with PCa-1, we measured the hazard ratios (HRs) of completed suicide after receiving a PCa-2 diagnosis, using Cox proportional hazard models. Results 10,938 and 937 completed suicides were identified among PCa-1 and PCa-2 patients, respectively. The HR of suicide deaths was 1.24 [95% confidence interval (CI), 1.15-1.32] after a PCa-2 diagnosis, compared with PCa-1 patients (adjusted for demographic factors, state, and tumor characteristic). The risk elevation was most pronounced when PCa-2 was prostate cancer (HR 1.37, 95% CI 1.18-1.60); and PCa-2 patients diagnosed between 60 to 75 years old had highest increased relative risk of suicide (HR 1.35, 95% CI 1.23-1.49). Conclusions Compared with patients with first primary cancer, cancer survivors receiving a PCa-2 diagnosis, particularly of prostate cancer or at age 60-75, are at increased risk of suicide. These findings emphasize the need to support and carefully monitor cancer survivors for PCa-2. Key messages Patients with PCa-2 are at a higher risk of suicide compared with patients with PCa-1, especially for PCa-2 diagnosed at age 60 to 75 or PCa-2 of prostate.


2021 ◽  
Author(s):  
Jia Hong ◽  
Rongrong Wei ◽  
Chuang Nie ◽  
Anastasiia Leonteva ◽  
Xu Han ◽  
...  

Aim: To assess and predict risk and prognosis of lung cancer (LC) patients with second primary malignancy (SPM). Methods: LC patients diagnosed from 1992 to 2016 were obtained through the Surveillance, Epidemiology, and End Results database. Standardized incidence ratios were calculated to evaluate SPM risk. Cox regression and competing risk models were applied to assess the factors associated with overall survival, SPM development and LC-specific survival. Nomograms were built to predict SPM probability and overall survival. Results & conclusion: LC patients remain at higher risk of SPM even though the incidence declines. Patients with SPM have a better prognosis than patients without SPM. The consistency indexes for nomograms of SPM probability and overall survival are 0.605 (95% CI: 0.598–0.611) and 0.644 (95% CI: 0.638–0.650), respectively.


2020 ◽  
pp. ijgc-2020-001946
Author(s):  
Julie My Van Nguyen ◽  
Danielle Vicus ◽  
Sharon Nofech-Mozes ◽  
Lilian T Gien ◽  
Marcus Q Bernardini ◽  
...  

ObjectiveOvarian clear cell carcinoma has unique clinical and molecular features compared with other epithelial ovarian cancer histologies. Our objective was to describe the incidence of second primary malignancy in patients with ovarian clear cell carcinoma.MethodsRetrospective cohort study of patients with ovarian clear cell carcinoma at two tertiary academic centers in Toronto, Canada between May 1995 and June 2017. Demographic, histopathologic, treatment, and survival details were obtained from chart review and a provincial cancer registry. We excluded patients with histologies other than pure ovarian clear cell carcinoma (such as mixed clear cell histology), and those who did not have their post-operative follow-up at these institutions.ResultsOf 209 patients with ovarian clear cell carcinoma, 54 patients developed a second primary malignancy (25.8%), of whom six developed two second primary malignancies. Second primary malignancies included: breast (13), skin (9), gastrointestinal tract (9), other gynecologic malignancies (8), thyroid (6), lymphoma (3), head and neck (4), urologic (4), and lung (4). Eighteen second primary malignancies occurred before the index ovarian clear cell carcinoma, 35 after ovarian clear cell carcinoma, and 7 were diagnosed concurrently. Two patients with second primary malignancies were diagnosed with Lynch syndrome. Smoking and radiation therapy were associated with an increased risk of second primary malignancy on multivariable analysis (OR 3.69, 95% CI 1.54 to 9.07, p=0.004; OR 4.39, 95% CI 1.88 to 10.6, p=0.0008, respectively). However, for patients developing second primary malignancies after ovarian clear cell carcinoma, radiation therapy was not found to be a significant risk factor (p=0.17). There was no significant difference in progression-free survival (p=0.85) or overall survival (p=0.38) between those with second primary malignancy and those without.ConclusionPatients with ovarian clear cell carcinoma are at increased risk of second primary malignancies, most frequently non-Lynch related. A subset of patients with ovarian clear cell carcinoma may harbor mutations rendering them susceptible to second primary malignancies. Our results may have implications for counseling and consideration for second primary malignancy screening.


2019 ◽  
Vol 8 (6) ◽  
pp. 3269-3277
Author(s):  
Lei Deng ◽  
Hrönn Harðardottír ◽  
Huan Song ◽  
Zhengrui Xiao ◽  
Changchuan Jiang ◽  
...  

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