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Aguilar-Romero JM, Aguilar-Romero E, Vergara-Fernández O, Zepeda-Najar C, Lino-Silva LS, Salcedo-Hernández RA. Prognosis of Mesorectal Tumor Deposits in Patients with Rectal Cancer Treated with Neoadjuvant Chemoradiotherapy and Total Mesorectal Excision. J Gastrointest Cancer 2023; 54:687-691. [PMID: 35411420 DOI: 10.1007/s12029-022-00822-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2022] [Indexed: 12/01/2022]
Abstract
BACKGROUND Tumor deposits (TDs) are associated with adverse prognostic factors and decreased survival in colon cancer. However, there is no information of their survival impact in rectal cancer with neoadjuvant chemoradiotherapy (n-CRT). METHODS Retrospective study in 223 patients with rectal cancer with n-CRT. A survival analysis of factors associated with decreased overall survival (OS) including TDs was performed. RESULTS From 223 patients, 131 (58.7%) were men, mean age 59.8 (± 13.06) years, and 42 (18.8%) of them revealed TDs. Survival analysis of TDs showed no association with mortality. Factors associated with decreased 5-year OS were the histologic grade (p = 0.42), perineural invasion (p = 0.001), and mesorectal quality (p = 0.067). Perineural invasion (HR = 2.335, 95% CI = 1.198-4.552) remained as independent factor in the multivariate analysis. CONCLUSIONS TDs were not associated with mortality in rectal cancer patients treated with n-CRT. Factors associated with decreased survival were inadequate mesorectal quality and perineural invasion.
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Affiliation(s)
- José M Aguilar-Romero
- General Surgery, Instituto Nacional de Ciencias Médicas Y de La Nutrición Salvador Zubrán, Mexico City, Mexico
- Colorectal Surgery Division, Instituto Nacional de Ciencias Médicas y de La Nutrición Salvador Zubrán, Mexico City, Mexico
| | - Estefanía Aguilar-Romero
- AFINES Program, National Autonomus University of Mexico (UNAM), Mexico City, Mexico
- Surgical Pathology, Instituto Nacional de Cancerología, Av. San Fernando # 22, Sección XVI, Tlalpan, 14080, Mexico City, CP, Mexico
| | - Omar Vergara-Fernández
- Colorectal Surgery Division, Instituto Nacional de Ciencias Médicas y de La Nutrición Salvador Zubrán, Mexico City, Mexico
| | - César Zepeda-Najar
- Surgical Oncology, Hospital Ángeles Tijuana, Tijuana, Baja California Norte, Mexico
| | - Leonardo S Lino-Silva
- Surgical Pathology, Instituto Nacional de Cancerología, Av. San Fernando # 22, Sección XVI, Tlalpan, 14080, Mexico City, CP, Mexico.
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Jasso-Sosa VY, Lino-Silva LS, Escobar-Jiménez MG, Galván-Bustillos JR, García-Ortega DY, Salcedo-Hernández RA, Zepeda-Najar C, Frías-Fernández P. Prognosis of polypoid melanoma: a comparative study with non-polypoid melanomas. Melanoma Res 2023; 33:257-261. [PMID: 36866632 DOI: 10.1097/cmr.0000000000000886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
Polypoid melanoma is considered an exophytic and frequently non-pigmented variant of nodular melanoma with an adverse prognosis; however, very few studies have been published about it with contradictory results. Therefore, our objective was to determine the prognostic value of this configuration in melanomas. A transversal retrospective study of 724 cases was analyzed according to the main configuration (polypoid vs. non-polypoid) regarding their clinicopathologic characteristics and survival analysis. Of the 724 cases, 35 (4.8%) met the definition of polypoid melanoma; such cases, compared with non-polypoid melanomas, were associated with a high Breslow thickness (7 mm vs. 3 mm), 68.6% had a Breslow >4 mm; showed different clinical stages of presentation, and presented more ulceration (77.1 vs. 51.4%). In the 5-year overall survival (OS) analysis, polypoid melanoma is associated with a lower 5-year OS, together with lymph node metastasis, Breslow thickness, clinical stage, mitoses per mm2, vertical growth phase, ulceration, and state of the surgical margins; however, in the multivariate analysis, the factors that remained independent predictors of death were the Breslow thickness groups, the clinical stage, the presence of ulceration, and the state of the surgical margins. Polypoid melanoma was not an independent predictor of OS. We found a prevalence of 4.8% of polypoid melanomas, which showed a worse prognosis than non-polypoid melanomas, explained by a higher proportion of ulcerated cases, greater Breslow thickness, and ulceration. However, polypoid melanoma was not an independent predictor of death.
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Affiliation(s)
| | | | | | | | | | | | - César Zepeda-Najar
- Surgical Oncology, Ángeles Tijuana Hospital, Tijuana, Baja California Norte
| | - Pedro Frías-Fernández
- Surgical Oncology, Oncology Center of Tula's Hospital, Tula de Allende, Hidalgo, Mexico
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Lino-Silva LS, Hernández-Romero R, García-Herrera JS, Zepeda-Najar C, Salcedo-Hernández RA, León-Takahashi AM, Escobar-Jiménez MG, Herrera-Gómez Á. Tasa de recurrencia e implicación del margen quirúrgico en la supervivencia del paciente con melanoma acral. ¿Es necesario un margen amplio? GAC MED MEX 2023. [DOI: 10.24875/gmm.22000192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
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Lino-Silva LS, Hernández-Romero R, García-Herrera JS, Zepeda-Najar C, Salcedo-Hernández RA, León-Takahashi AM, Escobar-Jiménez MG, Herrera-Gómez Á. Recurrence rate and survival implications of surgical margins in patients with acral melanoma. Is a wide margin necessary? GAC MED MEX 2023; 159:38-43. [PMID: 36930558 DOI: 10.24875/gmm.m22000734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023] Open
Abstract
INTRODUCTION Appropriate size of resection margins in acral melanoma is not clearly established. OBJECTIVE To investigate whether narrow-margin excision is appropriate for thick acral melanoma. METHODS Three-hundred and six patients with acral melanoma were examined. Factors associated with recurrence and survival were analyzed according to surgical margin size (1 to 2 cm and > 2 cm). RESULTS Out of 306 patients, 183 were women (59.8%). Median Breslow thickness was 6 mm; 224 cases (73.2%) were ulcerated, 154 patients (50.3%) had clinical stage III disease, while 137 were at stage II (44.8%) and 15 at stage IV (4.9%). All cases had negative margins, with a median of 31.5 mm. A Breslow thickness of 7 mm (p = 0.001) and clinical stage III (p = 0.031) were associated with recurrence; the factors associated with survival were Breslow index (p = 0.047), ulceration (p = 0.003), advanced clinical stage (p < 0.001), and use of adjuvant therapy (p = 0.003). CONCLUSION A resection margin of 1 to 2 cm did not affect tumor recurrence or survival in patients with acral melanoma.
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Affiliation(s)
- Leonardo S Lino-Silva
- Department of Oncological Pathology, Instituto Nacional de Cancerología, Mexico City
| | | | | | - César Zepeda-Najar
- Department of Surgical Oncology, Hospital Ángeles Tijuana, Baja California. Mexico
| | | | | | | | - Ángel Herrera-Gómez
- Department of Surgical Oncology, Instituto Nacional de Cancerología, Mexico City
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Aguilar-Romero E, Chávez-Hernández JD, Zepeda-Najar C, Salcedo-Hernández RA, Lino-Silva LS. Variables pronósticas de pacientes con melanomas gruesos. Análisis de 362 casos. GAC MED MEX 2021. [DOI: 10.24875/gmm.20000332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Salcedo-Hernández RA, Cantú-de-León DF, Pérez-Montiel D, García-Pérez L, Lino-Silva LS, Zepeda-Najar C, Barquet-Muñoz SA. The usefulness of intraoperative consultation for the diagnosis of borderline ovarian tumors. Ann Transl Med 2021; 9:261. [PMID: 33708888 PMCID: PMC7940902 DOI: 10.21037/atm-20-3932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Background Borderline ovarian tumors (BTs) must be recognized during the surgery by intraoperative consultation (IOC) to guide surgical treatment; however, this diagnosis can be imprecise. Therefore, this study aimed to evaluate the diagnostic accuracy of IOC for the diagnosis of BT. Methods A retrospective cohort study was carried out including all women diagnosed with a pelvic tumor consecutively surgically treated from 2005 to 2015 with IOC. We calculated the sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and likelihood ratios (LR) for the IOC and BTs. Results A total of 758 patients were enrolled, the median age was 44 years, the median tumor size was 11.8 cm, and the median CA-125 levels were 45.65 U/µL. After IOC, 458 (64.1%) cases were diagnosed as benign, 111 (14.7%) as BT, and 161 (21.2%) as malignant. The definitive diagnosis was a benign tumor in 448 (59.1%) cases, BT in 110 (14.5%), and 200 (26.4%) cases were malignant. The diagnostic accuracy of the IOC for BT diagnosis was 89.8% (sensitivity =65.5%, specificity =93.9%). The diagnosis performance of IOC for the diagnosis between BT and benign tumors (n=546) had a sensitivity of 69.9%, a specificity of 98.4%, and a diagnostic accuracy of 84%; meanwhile for the diagnosis between BT and malignant tumors (n=242) IOC had a sensitivity of 92.3%, a specificity of 81.7%, and a diagnostic accuracy of 87%. Conclusions For practitioners, knowing the accuracy and limitations of the IOC for BT enables the better selection of cases to perform a complete staging surgery.
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Affiliation(s)
| | | | | | | | | | - César Zepeda-Najar
- Surgical oncology, Hospital ángeles Tijuana, Tijuana, Baja California Norte, Mexico
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Aguilar-Romero E, Chávez-Hernández JD, Zepeda-Najar C, Salcedo-Hernández RA, Lino-Silva LS. Prognostic variables in patients with thick melanomas. Analysis of 362 cases. GAC MED MEX 2021; 157:207-211. [PMID: 34270542 DOI: 10.24875/gmm.m21000543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 07/16/2020] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Melanoma epidemiological and prognostic studies are based on Caucasian populations, in whom the predominant subtype is superficially-spreading melanoma and in whom thin melanomas (Breslow < 3 mm) predominate. Mexican patients show a predominance of thick melanomas (Breslow ≥ 3 mm), and the acral subtype is the most common. There are no publications on prognostic factors in thick melanomas. We hypothesize that we will identify factors that determine the prognosis in this group of patients. OBJECTIVE To identify clinical-pathological factors associated with the prognosis of patients with thick melanomas in the Mexican population. MATERIAL AND METHODS Data on melanomas with Breslow > 3 mm were collected from 2010 to 2015. The prognostic influence of various clinical-pathological factors was analyzed. RESULTS The most common subtypes were acral melanoma in 271 patients (74.9 %) and nodular melanoma in 49 (13.5 %). Median Breslow thickness was 7 mm. 56.6 % of the patients had lymph node metastases (clinical stage [CS] III), 269 (74.3 %) had ulceration, and surgical margins were positive in 15 (4.1 %). Elevated neutrophil: lymphocyte ratio (≥ 2) was found in 188 (51.9 %). The variables associated with lower overall survival were CS (p < 0.001), Breslow thickness (p = 0.044), ulceration (p = 0.004), mitotic activity (p < 0.001), < 2-cm margin (p < 0.001) and an increased neutrophil: lymphocyte ratio (p = 0.037). In the multivariate analysis, the factors associated with overall survival were CS, mitotic activity, and surgical margin. CONCLUSIONS In patients with thick melanomas, overall survival is influenced by mitotic activity, a positive margin, and clinical stage.
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Affiliation(s)
- Estefanía Aguilar-Romero
- Department of Pathological Anatomy, Instituto Nacional de Cancerología, Mexico City
- AFINES Program, Universidad Nacional Autónoma de México, Mexico City
| | | | - César Zepeda-Najar
- Department of Surgical Oncology, Hospital Ángeles Tijuana, Tijuana, Baja California Norte
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Lino-Silva LS, Zepeda-Najar C, Salcedo-Hernández RA. Adjuvant therapy in patients with rectal adenocarcinoma treated with neoadjuvant chemoradiotherapy and radical resection in pathological stages I-III. Ann Transl Med 2020; 8:1116. [PMID: 33145335 PMCID: PMC7575958 DOI: 10.21037/atm-20-5088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- Leonardo S Lino-Silva
- Surgical Pathology, Instituto Nacional de Cancerología, Tlalpan, Mexico City, Mexico
| | - César Zepeda-Najar
- Surgical Oncology, Hospital Angeles Tijuana, Tijuana, Baja California Norte, Mexico
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Lino-Silva LS, Segales-Rojas P, Aguilar-Cruz E, Salcedo-Hernández RA, Zepeda-Najar C. Gastrointestinal Stromal Tumors Risk of Recurrence Stratification by Tumor Volume is a Best Predictor Compared with Risk Based on Mitosis and Tumor Size. J Gastrointest Cancer 2020; 50:513-518. [PMID: 29766411 DOI: 10.1007/s12029-018-0115-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE Gastrointestinal stromal tumors (GIST) have the potential to recur and metastasize. Several prognostic schemes have been developed, mostly based on the mitotic count, diameter, and tumor site. However, these systems are not precise enough. The research question was whether the tumor size determined by volumetry allows a better risk stratification than the traditional system, and our aim was to determine the value of tumor volumetry, a feasible and simple parameter, in the recurrence of GIST. METHODS Seventy-four cases of GIST were studied. The cases presented with non-metastatic disease, which were resected and did not receive imatinib. We compared the clinico-pathologic features of the cases with recurrence against those with non-recurrence and compared the tumor volumetry against the classification system based on tumor size and mitosis. RESULTS The median age was 58 years (range: 25 to 91 years). Half of the cases were presented in the stomach. The tumor size had a median of 8 cm (range of 1-30 cm). The median mitosis count for 50 HPF was 4 (range 0-92). During the period of study, 16 (21.6%) patients suffered recurrence. The significant differences were that patients with recurrence accounted for more deaths and the follow-up period was larger. The area under the curve (AUC) of the volumetry classification was superior to the AUC of the classification system based on tumor size and mitosis (NIH-criteria) (p = .05). CONCLUSION Tumor volumetry calculated in the surgical specimen and/or pre-operative tomography was superior to the NIH consensus in stratifying the risk of recurrence in GIST.
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Affiliation(s)
- Leonardo S Lino-Silva
- Surgical Pathology, Instituto Nacional de Cancerología, Mexico City, Mexico. .,Anatomic Pathology, Gastrointestinal Pathology Division, Instituto Nacional de Cancerología de México (Mexico's National Cancer Institute), Av. San Fernando # 22, Sección XVI, Tlalpan, 14080, Mexico City, Mexico.
| | | | - Eduardo Aguilar-Cruz
- Anatomic Pathology, Gastrointestinal Pathology Division, Instituto Nacional de Cancerología de México (Mexico's National Cancer Institute), Av. San Fernando # 22, Sección XVI, Tlalpan, 14080, Mexico City, Mexico
| | | | - César Zepeda-Najar
- Surgical Oncology, Hospital Ángeles Tijuana, Tijuana, Baja California Norte, Mexico
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Guzmán-López JC, Lino-Silva LS, Salcedo-Hernández RA, Zepeda-Najar C. Report of three cases of gastric choriocarcinomas-an emphasis on morphologic changes in the non-affected gastric mucosa. J Gastrointest Oncol 2019; 10:810-814. [PMID: 31392063 DOI: 10.21037/jgo.2019.01.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Primary gastric choriocarcinomas (PGC) are very rare and aggressive neoplasms with a worrisome prognosis. Most cases are reported in Asia and presented in middle-aged adults with male predominance. Most cases are associated with an intestinal adenocarcinoma; however, the pathogenesis of this tumor is uncertain. No previous reports exist of the characteristics of the non-tumoral stomach in these patients, and this data that could help to clarify their pathogenesis. We presented a series of three cases of PGC in Latin American patients, emphasizing the characteristics of non-neoplastic mucosa.
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Affiliation(s)
| | | | | | - César Zepeda-Najar
- Surgical Oncology, Hospital Ángeles Tijuana, Tijuana, Baja California Norte, Mexico
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Lino-Silva LS, Guzmán-López JC, Zepeda-Najar C, Salcedo-Hernández RA, Meneses-García A. Overall survival of patients with colon cancer and a prolonged time to surgery. J Surg Oncol 2018; 119:503-509. [DOI: 10.1002/jso.25354] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 12/09/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Leonardo S. Lino-Silva
- Department of Surgical Pathology; Gastrointestinal Pathology Division; Instituto Nacional de Cancerología; Mexico City Mexico
| | - Janet C. Guzmán-López
- Department of Surgical Pathology; Gastrointestinal Pathology Division; Instituto Nacional de Cancerología; Mexico City Mexico
| | - César Zepeda-Najar
- Department of Surgical Oncology; Hospital Ángeles Tijuana; Tijuana Baja California Norte Mexico
| | | | - Abelardo Meneses-García
- Department of Surgical Pathology; Gastrointestinal Pathology Division; Instituto Nacional de Cancerología; Mexico City Mexico
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Lino-Silva LS, Salcedo-Hernández RA, Segales-Rojas P, Zepeda-Najar C. Comparison of 3 Ways of Dissecting the Pancreatoduodenectomy Specimen and Their Impact in the Lymph Node Count and the Lymph Node Metastatic Ratio. Int J Surg Pathol 2018; 26:707-713. [DOI: 10.1177/1066896918780343] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
Background. Lymph node metastasis (LNM) is a strong prognostic factor in the cancer of the pancreatobiliary tree, but it is influenced by the number of lymph nodes (LNs). The lymph node ratio (LNR) is considered a more reliable factor than the number of LNM. The aim was to examine the LN retrieval and the LNR of 3 pathologic work-up strategies. Methods. Pancreaticoduodenectomies (n = 165) were analyzed comparing 3 pathological dissection techniques, classified as “control,” “Verbeke method,” and “Adsay method” groups. Results. The mean of the dissected LNs and the number of cases with >20 LNs were superior in the Adsay method group, compared with the other groups ( P < .001). The LNR was different between the Adsay and Verbeke groups (0.144 vs 0.069, P = .032). The median of the 3 positive LNs was associated with decreased survival compared with an absence of LNM (3-year specific survival of 48% vs 22%, P = .011). In the multivariate analysis, LNM (hazard ratio = 6.148, 95% confidence interval = 2.02-8.1, P = .042) and the evaluation of >15 LNs (hazard ratio = 12.52, 95% confidence interval = 5.51-21.01, P = .001) were independent predictors of survival. Conclusion. The Adsay technique for LN retrieval was associated with a better LN count, more cases with LNM, and an LNR >0.1.
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Abstract
Introduction: Acral lentiginous melanoma (ALM) is an aggressive variant of melanoma; the incidence, prevalence, and prognosis differ among populations. We analyzed clinicopathological features and survival in Hispanics, a population with high ALM prevalence. Material and Methods: From 1144 patients with melanoma, we analyzed 715 ALMs and 429 non-ALMs from the National Referral Cancer Centre and compared survival. Results: Of the ALM group, 62.8% were female; the median age was 58 years. The mean Breslow thickness was 3.56 ± 7.16 mm. ALM patients showed an estimated 5-year disease-specific survival (DSS) of 53.3%, 52.7%, and 40.8% for stage I, II, and III, respectively. For non-ALM patients, the DSS rates were 66%, 60.8%, and 48.4% for stage I, II, and III disease, respectively. Overall, the 1-, 3-, and 5-year DSS rates for patients with ALM were 85.1%, 59.4%, and 46.3%, respectively; for non-ALM patients, they were 81.3%, 64.8%, and 55.7%, respectively ( P = .168). In the multivariate analysis, factors associated with decreased DSS were high Breslow thickness, recurrence, ulceration, male sex, and advanced stage. Conclusions: The 1-, 3-, and 5-year DSS rates of patients with ALM were not statistically different from those of non-ALM patients. In addition to known adverse prognostic factors, male sex was also associated with worse survival.
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Affiliation(s)
| | - César Zepeda-Najar
- Surgical Oncology, Hospital Ángeles Tijuana, Tijuana, Baja California Norte, Mexico
| | | | - Héctor Martínez-Said
- Surgical Oncology, Instituto Nacional de Cancerología (INCan), Mexico City, Mexico
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López-Correa PE, Lino-Silva LS, Gamboa-Domínguez A, Zepeda-Najar C, Salcedo-Hernández RA. Frequency of Defective Mismatch Repair System in a Series of Consecutive Cases of Colorectal Cancer in a National Cancer Center. J Gastrointest Cancer 2018; 49:379-384. [PMID: 29974347 DOI: 10.1007/s12029-018-0132-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
BACKGROUND The frequency of colorectal cancer (CRC) with defective mismatch repair (dMMR) is estimated between 5 and 15%. In our population, the frequency of dMMR is unknown. Our objective was to show the frequency of dMMR. METHODS Determination of dMMR with immunohistochemistry was performed prospectively for 202 patients who presented consecutively with CRC for the first time at our institution. RESULTS The median age was 59 years (IQR 47 to 68), 119 (58.9%) were women, and 43 (21.3%) cases showed dMMR. The only clinicopathological characteristics associated with dMMR were the location in the right colon and the presence of a family history of cancer. In the multivariate analysis, only the presence of the tumor in the right colon was associated with dMMR (OR = 5.823, 95%-C.I. = 2.653-12.784, p < .001). CONCLUSION The 21.3% of the cases demonstrated a dMMR and the only clinical-pathological characteristic associated with dMMR was location in the right colon.
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Affiliation(s)
- Patricia E López-Correa
- Surgical pathology, Instituto Nacional de Cancerología, Mexico City, Mexico.,Surgical pathology, Fundación Universitaria de Ciencias de la Salud (FUCS), Hospital de San José, Bogotá, Colombia
| | - Leonardo S Lino-Silva
- Surgical pathology, Instituto Nacional de Cancerología, Mexico City, Mexico. .,Gastrointestinal Pathology Division, Instituto Nacional de Cancerología de México (Mexico's National Cancer Institute), Av. San Fernando # 22, Sección XVI, Tlalpan, CP 14080, Mexico City, Mexico.
| | - Armando Gamboa-Domínguez
- Surgical Pathology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - César Zepeda-Najar
- Surgical Oncology, Hospital Ángeles Tijuana, Tijuana, Baja California Norte, Mexico
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Abstract
Background Primary colorectal lymphomas (PCLs) are very rare. We analyze a series of PCL to establish an approximate frequency of the disease and their clinico-pathological characteristics. Methods A retrospective cross-sectional study in a third-level hospital from 2006-2016. Clinico-pathologic features of 18 cases are presented. Results PCL corresponded to 1.5% of malignant colorectal neoplasms. Ten cases presented in men, the median age was 57 years, diffuse large B-cell lymphoma (DLBCL) was the most common subtype (55.6%), 55.6% presented in cecum, 83.4% as unique polypoid tumor and the median size was 52.5 mm. The most prevalent presentation symptom was abdominal pain (61.1%). Six cases (33%) received initial surgery followed by chemotherapy, 7 cases (39%) received only chemotherapy, 2 cases received only surgery and 3 cases no-treatment. The 2-year disease specific survival was 62.7%. The only factors associated with improved survival in univariate analysis were use of surgery followed by chemotherapy (P=0.043) and HIV (P=0.043). On multivariate analysis none factor was an independent risk factor for decreased survival. Conclusions The improved overall survival rates in our series emphasize the importance of surgery followed systemic therapy in the treatment of this disease.
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Affiliation(s)
| | | | | | - César Zepeda-Najar
- Surgical Oncology, Hospital Ángeles Tijuana, Tijuana, Baja California Norte, Mexico
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