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Cancer staging

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obtained by making indirect observations of a tumor which is still in the body. However, clinical staging and pathologic staging often complement each other. Not every tumor is treated surgically, so pathologic staging is not always available. Also, sometimes surgery is preceded by other treatments such as
645:, Stage II indicates affected lymph nodes on only one side of the diaphragm, whereas Stage III indicates affected lymph nodes above and below the diaphragm. The specific criteria for Stages II and III therefore differ according to diagnosis. Stage III can be treated by chemotherapy, radiation, or surgery. 244:
Because they use different criteria, clinical stage and pathologic stage often differ. Pathologic staging is usually considered to be more accurate because it allows direct examination of the tumor in its entirety, contrasted with clinical staging which is limited by the fact that the information is
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Thompson, I.; Thrasher, J. B.; Aus, G.; Burnett, A. L.; Canby-Hagino, E. D.; Cookson, M. S.; d'Amico, A. V.; Dmochowski, R. R.; Eton, D. T.; Forman, J. D.; Goldenberg, S. L.; Hernandez, J.; Higano, C. S.; Kraus, S. R.; Moul, J. W.; Tangen, C. M.; AUA Prostate Cancer Clinical Guideline Update Panel
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Within the TNM system, a cancer may also be designated as recurrent, meaning that it has appeared again after being in remission or after all visible tumor has been eliminated. Recurrence can either be local, meaning that it appears in the same location as the original, or distant, meaning that it
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Carlson, R. W.; Allred, D. C.; Anderson, B. O.; Burstein, H. J.; Carter, W. B.; Edge, S. B.; Erban, J. K.; Farrar, W. B.; Goldstein, L. J.; Gradishar, W. J.; Hayes, D. F.; Hudis, C. A.; Jahanzeb, M.; Kiel, K.; Ljung, B. M.; Marcom, P. K.; Mayer, I. A.; McCormick, B.; Nabell, L. M.; Pierce, L. J.;
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Stage migration is a change in the distribution of stages in a particular cancer population, induced by either a change in the staging system itself or else a change in technology which allows more sensitive detection of tumor spread and therefore more sensitivity in detecting spread of disease
655:, or spread to other organs or throughout the body. Stage IV cancer can be treated by chemotherapy, radiation, or surgery. Despite treatment, a patient's mortality rate can be significantly higher with Stage IV cancer, e.g., the cancer can progress to become 261:
Correct staging is critical because treatment (particularly the need for pre-operative therapy and/or for adjuvant treatment, the extent of surgery) is generally based on this parameter. Thus, incorrect staging would lead to improper treatment.
301:, can be particularly problematic for two specific reasons: visual discretion and random sampling of tissue. "Visual discretion" means being able to identify single cancerous cells intermixed with healthy cells on a slide. Oversight of one 265:
For some common cancers the staging process is well-defined. For example, in the cases of breast cancer and prostate cancer, doctors routinely can identify that the cancer is early and that it has low risk of metastasis. In such cases,
456:: follows a scale from I to IV and can be indicated further by an A or B, depending on whether a patient is non-symptomatic or has symptoms such as fevers. It is known as the "Cotswold System" or "Modified Ann Arbor Staging System". 305:
can mean misstaging and lead to serious, unexpected spread of cancer. "Random sampling" refers to the fact that lymph nodes are cherry-picked from patients and random samples are examined. If cancerous cells present in the
400:. Because of its high sensitivity, RT-PCR screening for GCC greatly reduces underestimation of disease stage. Researchers hope that staging with this level of precision will lead to more appropriate treatment and better 150:
has grown and spread. A number from I to IV is assigned, with I being an isolated cancer and IV being a cancer that has metastasized and spread from its origin. The stage generally takes into account the size of a
193:(Tumor, Node, Metastasis) system, clinical stage and pathologic stage are denoted by a small "c" or "p" before the stage (e.g., cT3N1M0 or pT2N0). This staging system is used for most forms of cancer, except 285:
because research shows that the risk of getting such procedures outweighs the possible benefits. Some of the problems associated with overtesting include patients receiving invasive procedures,
424:), but some cancers do not have a staging system. Although competing staging systems still exist for some types of cancer, the universally-accepted staging system is that of the 769:
Reed, E. C.; Smith, M. L.; Somlo, G.; Theriault, R. L.; Topham, N. S.; Ward, J. H.; Winer, E. P.; Wolff, A. C.; NCCN Breast Cancer Clinical Practice Guidelines Panel (2009).
731: 397: 501: 1060: 473: 641:: cancers are also locally advanced. Whether a cancer is designated as Stage II or Stage III can depend on the specific type of cancer; for example, in 35: 548:: TNM used. Also of importance are the "Clark level" and "Breslow depth" which refer to the microscopic depth of tumor invasion ("Microstaging"). 985: 1035: 1010: 842: 1127: 749: 745: 727: 96: 960: 68: 1152: 505: 429: 425: 1102: 75: 875: 367: 938: 349: 54: 1210: 82: 396:) with a high degree of sensitivity and exactitude. Presence of GCC in any other tissue of the body represents 334: 1064: 310:
happen not to be present in the slices of tissue viewed, incorrect staging and improper treatment can result.
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For solid tumors, TNM is by far the most commonly used system, but it has been adapted for some conditions.
487: 274: 64: 629:: cancers are localized to one part of the body. Stage I cancer can be surgically removed if small enough. 596:
Staging. This system uses numerals I, II, III, and IV (plus the 0) to describe the progression of cancer.
893:"An Operative Staging System and a Megavoltage Radiotherapeutic Technic for Cerebellar Medulloblastomas" 1556: 270: 198: 635:: cancers are locally advanced. Stage II cancer can be treated by chemotherapy, radiation, or surgery. 1350: 278: 43: 1385: 1343: 1183: 1597: 1478: 1442: 1380: 1160: 551: 533: 404:. Furthermore, researchers hope that this same technique can be applied to other tissue-specific 345: 39: 697: 518:). More recently, colon cancer staging is indicated either by the original A-D stages or by TNM. 1483: 1437: 678: 1535: 1516: 805:(2007). "Guideline for the Management of Clinically Localized Prostate Cancer: 2007 Update". 504:" system has been adopted into the TNM system. For premalignant dysplastic changes, the CIN ( 389: 89: 1488: 1333: 1323: 1203: 989: 642: 527: 515: 453: 267: 210: 1188: 1039: 1014: 610:, abnormal cells growing in their normal place ("in situ" from Latin for "in its place"). 181: 8: 1375: 1307: 1085: 614: 497: 435:
Systems of staging may differ between diseases or specific manifestations of a disease.
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medical services, getting unnecessary radiation exposure, and experiencing misdiagnosis.
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scans). Stage migration can lead to curious statistical phenomena (for example, the
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to remove the tumor. This stage may include information about the tumor obtained by
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Cancer staging can be divided into a clinical stage and a pathologic stage. In the
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which shrink the tumor, so the pathologic stage may underestimate the true stage.
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it has spread to (if any), and whether it has appeared in more distant locations (
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Pathologic stage adds additional information gained by examination of the tumor
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New, highly sensitive methods of staging are in development. For example, the
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Clinical stage is based on all of the available information obtained before a
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if you can. Unsourced or poorly sourced material may be challenged and
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3D medical illustration depicting the TNM stages in breast cancer
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are staged following a classification developed by Chang et al.
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Chang, Chu H.; Housepian, Edgar M.; Herbert, Charles (1969).
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Pathologic staging, where a pathologist examines sections of
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Staging systems are specific for each type of cancer (e.g.,
1256: 1218: 514:: originally consisted of four stages: A, B, C, and D (the 381: 803: 771:"Breast cancer. Clinical practice guidelines in oncology" 674: 1130:. National Comprehensive Cancer Network. Archived from 137:
Determining the extent to which a cancer has developed
939:"Breast Cancer Treatment - National Cancer Institute" 890: 870:. International Agency for Research on Cancer. 2021. 732:"Five Things Physicians and Patients Should Question" 775:
Journal of the National Comprehensive Cancer Network
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is the process of determining the extent to which a
16:Process of determining the extent of cancer spread 1589: 613:Stage 0 can also mean no remaining cancer after 1038:. Cancerhelp.org.uk. 2010-07-28. Archived from 1013:. Cancerhelp.org.uk. 2010-06-30. Archived from 392:, can be identified using molecular screening ( 592:Overall Stage Grouping is also referred to as 49:Please review the contents of the article and 1204: 1145: 1211: 1197: 958: 722: 720: 718: 494:, but staging in I–IV may be used as well. 786: 664:appears in a different part of the body. 580: 388:), present only in the luminal aspect of 368:Learn how and when to remove this message 180: 715: 1590: 739:Choosing Wisely: an initiative of the 1192: 961:"FIGO staging of cervical carcinomas" 746:American Society of Clinical Oncology 728:American Society of Clinical Oncology 240:after it has been surgically removed. 170: 1105:. Chorus.rad.mcw.edu. Archived from 1036:"The stages of cancer of the larynx" 317: 18: 963:. Screening.iarc.fr. Archived from 560:: uses TNM along with a measure of 313: 13: 860: 667: 584: 506:cervical intraepithelial neoplasia 155:, whether it has invaded adjacent 14: 1614: 1177: 988:. oncologychannel. Archived from 845:. oncologychannel. Archived from 256: 322: 115: 23: 1120: 1095: 1078: 1053: 1028: 1128:"NCCN Guidelines for Patients" 1086:Imaging in Lung Cancer Staging 1003: 978: 952: 931: 884: 868:Central Nervous System Tumours 835: 690: 554:: TNM almost universally used. 490:, staging is usually based on 51:add the appropriate references 1: 1526:Clonally transmissible cancer 1103:"malignant melanoma: staging" 1061:"How is liver cancer staged?" 843:"Hodgkin's Disease - Staging" 684: 292: 273:recommend against the use of 159:, how many regional (nearby) 498:Cervical and ovarian cancers 488:breast cancer classification 476:. Embryonal CNS tumors like 7: 348:the claims made and adding 36:reliable medical references 10: 1619: 1557:Index of oncology articles 819:10.1016/j.juro.2007.03.003 411: 271:professional organizations 199:hematological malignancies 174: 1544: 1497: 1455: 1430: 1394: 1316: 1275: 1242: 1235: 1011:"Stages of kidney cancer" 959:Eric Lucas (2006-01-31). 508:) grading system is used. 133: 128: 42:or relies too heavily on 986:"Colon Cancer - Staging" 941:. Cancer.gov. 2010-08-13 568:Non-melanoma skin cancer 460: 438: 1479:Prostate cancer staging 1443:Paraneoplastic syndrome 1161:American Cancer Society 1153:"Bladder Cancer Stages" 788:10.6004/jnccn.2009.0012 1517:Tumor suppressor genes 1484:Gleason grading system 1438:Precancerous condition 807:The Journal of Urology 698:"Cancer Staging - NCI" 679:Will Rogers phenomenon 617:in some cancers (e.g. 615:preoperative treatment 589: 581:Overall stage grouping 186: 1536:Carcinogenic bacteria 1276:Malignant progression 651:: cancers have often 588: 398:colorectal metaplasia 390:intestinal epithelium 184: 1603:Anatomical pathology 1489:Dukes classification 528:Cancer of the larynx 516:Dukes staging system 211:physical examination 1308:Sentinel lymph node 1356:Respiratory system 673:(e.g., the use of 590: 386:guanylyl cyclase c 333:possibly contains 187: 177:TNM staging system 171:TNM staging system 1585: 1584: 1572:Cancer and nausea 1451: 1450: 1288:Carcinoma in situ 909:10.1148/93.6.1351 643:Hodgkin's Disease 619:colorectal cancer 558:Testicular cancer 449:Ann Arbor staging 378: 377: 370: 335:original research 268:medical specialty 251:radiation therapy 141: 140: 124: 123: 100: 1610: 1386:Endocrine system 1351:Digestive system 1240: 1239: 1213: 1206: 1199: 1190: 1189: 1172: 1171: 1169: 1167: 1149: 1143: 1142: 1140: 1139: 1124: 1118: 1117: 1115: 1114: 1099: 1093: 1082: 1076: 1075: 1073: 1072: 1063:. 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758: 756: 752: 741:ABIM Foundation 734: 725: 716: 707: 705: 696: 695: 691: 687: 670: 668:Stage migration 583: 564:markers (TNMS). 552:Prostate cancer 478:medulloblastoma 463: 441: 414: 374: 363: 357: 354: 339: 327: 323: 316: 295: 259: 234:microscopically 179: 173: 120: 116: 111: 105: 102: 59: 48: 44:primary sources 28: 24: 17: 12: 11: 5: 1616: 1606: 1605: 1600: 1598:Cancer staging 1583: 1582: 1580: 1579: 1574: 1569: 1564: 1559: 1554: 1548: 1546: 1542: 1541: 1539: 1538: 1533: 1528: 1523: 1514: 1509: 1503: 1501: 1499:Carcinogenesis 1495: 1494: 1492: 1491: 1486: 1481: 1476: 1471: 1465: 1463: 1453: 1452: 1449: 1448: 1446: 1445: 1440: 1434: 1432: 1428: 1427: 1425: 1424: 1419: 1414: 1409: 1404: 1398: 1396: 1392: 1391: 1389: 1388: 1383: 1381:Nervous system 1378: 1373: 1368: 1363: 1358: 1353: 1348: 1347: 1346: 1344:nasopharyngeal 1341: 1336: 1331: 1320: 1318: 1314: 1313: 1311: 1310: 1305: 1300: 1295: 1290: 1285: 1279: 1277: 1273: 1272: 1270: 1269: 1264: 1259: 1254: 1248: 1246: 1237: 1233: 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Index

reliable medical references
verification
primary sources
add the appropriate references
removed
"Cancer staging"
news
newspapers
books
scholar
JSTOR
cancer
tumor
organs
lymph nodes
metastasized
TNM staging system
3D medical illustration depicting the TNM stages in breast cancer
TNM
brain tumors
hematological malignancies
surgery
physical examination
blood tests
radiologic
biopsy
endoscopy
microscopically
pathologist
chemotherapy

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