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      Clinicopathological Prognostic Implicators of Oral Squamous Cell Carcinoma: Need to Understand and Revise

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          Abstract

          In spite of the vast amount of research and the advances, oral squamous cell carcinoma implies quite significant mortality and morbidity rates. This has motivated the search of factors with prognostic relevance. A web based search was initiated for all published articles by using Medline/PubMed, Google Scholar with key words such as prognosis, survival rate, risk factors associated with oral squamous cell carcinoma, prognosis of oral squamous cell carcinoma. The search was restricted to articles published in English language with no restriction to date of publication. This review was focused on clinical, pathological and molecular factors associated with survival and prognosis of oral squamous cell carcinoma patients. Most articles had described one or two parameters related to prognosis. Considering the biological behavior and nature of cancer, all the parameters were interrelated and so could not predict the prognosis independently. Consideration of all the parameters was required to assess the prognosis. We hypothesize the use of combination of clinical and pathological indicators together to assess the prognosis. The care givers can assess the prognosis in a more better and definitive way by using prognosis assessment sheet.

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          Most cited references33

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          Oral squamous cell carcinoma: review of prognostic and predictive factors.

          Oral squamous cell carcinoma has a remarkable incidence worldwide and a fairly onerous prognosis, encouraging further research on factors that might modify disease outcome. In this review article, the authors approach the factors that may exert influence on the prognosis and eventually guide the selection of patients for more aggressive therapies. Published scientific data was collected, selected, and grouped into 3 main clusters: patient-, tumor-, and treatment-related factors. Well established aspects are discussed, but also those less common or with only supposed usefulness. Disease staging, extracapsular dissemination, resection margin free of disease, and tumor thickness are factors with high influence on the prognosis. There has been an increasing interest in the study of tumor molecular factors, and some have been strongly correlated with the outcome, showing promising pathways for the future development of more effective prognosis systems and anticancer therapies.
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            The recurrence and survival of oral squamous cell carcinoma: a report of 275 cases

            Oral squamous cell carcinoma (OSCC) is a common malignant tumor of the head and neck, and recurrence is an important prognostic factor in patients with OSCC. We explored the factors associated with recurrence of OSCC and analyzed the survival of patients after recurrence. Clinicopathologic and follow-up data of 275 patients with OSCC treated by surgery in the Cancer Institute and Hospital of Tianjin Medical University between 2002 and 2006 were analyzed. Recurrence factors were analyzed with Chi-square or Fisher's exact test and multivariate analysis. The prognosis of patients after recurrence was analyzed with the Kaplan-Meier method and log-rank test. The recurrence rate was 32.7%. The recurrence time ranged from 2 to 96 months, with a median of 14 months. Univariate analysis showed that T stage, degree of differentiation, pN stage, flap application, resection margin, and lymphovascular invasion were factors of recurrence (P 0.05). Kaplan-Meier and log-rank tests showed that the 2- and 5-year survival rates were significantly lower in the recurrence group than in non-recurrence group (67.6% vs. 88.0%, 31.8% vs. 79.9%, P < 0.001). Therefore, to improve prognosis, we recommend extended local excision, flap, radical neck dissection, and adjuvant chemoradiotherapy for patients more likely to undergo recurrence.
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              Perineural invasion in squamous cell carcinoma of the head and neck.

              To determine if perineural invasion (PNI) of small nerves affects the outcome of patients with squamous cell carcinoma (SCC) of the upper aerodigestive tract. Retrospective clinicopathological study of patients with at least 2 years of follow-up and with negative margins and no prior, synchronous, or metachronous SCC. Academic otolaryngology department. One hundred forty-two patients who had SCC of the oral cavity, oropharynx and hypopharynx, or larynx resected between 1981 and 1991. Surgery with or without adjuvant therapy. Local recurrence was examined with respect to PNI, nerve diameter, and microvascular or microlymphatic invasion. Perineural invasion was correlated with lymph node metastasis, extracapsular spread, and survival. Perineural invasion of nerves less than 1 mm in diameter was present in 74 patients, lymphatic invasion in 53, and vascular invasion in 9. Perineural invasion was significantly associated with local recurrence (23% for PNI vs 9% for no PNI; P=. 02), and disease-specific mortality (54% mortality for PNI vs 25% for no PNI; P<.001). With extralaryngeal tumors, PNI was associated with nodal metastasis (73% vs 46%; P=.03). Perineural invasion was not associated with extracapsular spread (P=.47). Microvascular invasion, lymphatic invasion, and nerve diameter were not significantly related to local recurrence. Perineural invasion of small nerves is associated with an increased risk of local recurrence and cervical metastasis and is, independent of extracapsular spread, a predictor of survival for patients with SCC of the upper aerodigestive tract.
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                Author and article information

                Journal
                N Am J Med Sci
                N Am J Med Sci
                NAJMS
                North American Journal of Medical Sciences
                Medknow Publications & Media Pvt Ltd (India )
                2250-1541
                1947-2714
                December 2013
                : 5
                : 12
                : 671-679
                Affiliations
                [1] Department of Oral Pathology and Microbiology, Rural Dental College and Hospital, PIMS Deemed University, Loni, Maharashtra, India
                Author notes
                Address for correspondence: Dr. Kiran B. Jadhav, Department of Oral Pathology and Microbiology, Rural Dental College and Hospital, PIMS Deemed University, Loni - 413 736, Maharashtra, India. E-mail: dr.kiranjadhav@ 123456yahoo.com
                Article
                NAJMS-5-671
                10.4103/1947-2714.123239
                3877528
                24404549
                a7fcedcc-b73f-4308-a14f-332029b5f148
                Copyright: © North American Journal of Medical Sciences

                This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Categories
                Review Article

                Medicine
                oral squamous cell carcinoma,oncogenes,oncoviruses,prognosis in oral cancer,tumer node metastasis staging

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