| Predictive value of magnetic resonance imaging in determining presence of residual disease after marginal excision of unsuspected soft tissue sarcomas of the hand. | |
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MedLine Citation:
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PMID: 20807625 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: Diagnosis of a soft tissue sarcoma of the hand is at times made only in retrospect after marginal excision of a presumed benign soft tissue mass. Magnetic resonance imaging (MRI) helps determine the presence of residual disease and the extent of contamination caused by marginal excision of unsuspected soft tissue sarcomas and assists in the planning of definitive treatment with surgery and radiotherapy when required. We sought to determine the accuracy of MRI in detecting residual sarcoma after marginal excision. METHODS: We retrospectively studied case records and imaging studies for all patients with soft tissue sarcomas of the hand evaluated and treated at our institution from 1996 to 2005. We included in this study 33 patients who underwent definitive surgery at our center after prior marginal excision. MRI scans done before definitive wide resection were classified as positive or negative for residual tumor. A musculoskeletal radiologist, blinded to the sarcoma type, findings on histopathology, and surgery, reviewed 19 scans to see whether the accuracy could be improved. RESULTS: There were 8 epithelioid sarcomas, 6 synovial sarcomas, 4 malignant fibrous histiocytomas, 2 leiomyosarcomas, 2 liposarcomas, 2 myxofibrosarcomas, and one each of 9 other diagnoses. A total of 11 were low-grade and 22 were high-grade tumors, with 4 superficial and 29 deep tumors. Pathology examination after definitive wide resection or partial hand amputation showed that 15 patients had residual tumor, 9 gross and 6 microscopic. The sensitivity of MRI in detecting residual soft tissue sarcoma of the hand was 60%, specificity was 78%, positive predictive value was 69%, and negative predictive value was 70%. The sensitivity of MRI in detecting gross residual soft tissue sarcoma of the hand was 89%, specificity was 79%, positive predictive value was 62%, and negative predictive value was 95%. Even when an experienced musculoskeletal radiologist reassessed 19 MRI scans, the accuracy did not improve. CONCLUSIONS: Magnetic resonance imaging does not reliably detect residual gross or microscopic soft tissue sarcoma after marginal excision of unsuspected soft tissue sarcomas of the hand, with residual tumor not readily distinguished from postoperative change. The absence of disease on MRI should not be used as the sole criterion in determining whether a repeat resection should be performed. TYPE OF STUDY/LEVEL OF EVIDENCE: Diagnostic III. |
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Authors:
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Mark E Puhaindran; Jeffrey Pratt; Mark W Manoso; John H Healey; Douglas N Mintz; Edward A Athanasian |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of hand surgery Volume: 35 ISSN: 1531-6564 ISO Abbreviation: J Hand Surg Am Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-09-02 Completed Date: 2011-01-07 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7609631 Medline TA: J Hand Surg Am Country: United States |
Other Details:
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Languages: eng Pagination: 1479-84 Citation Subset: IM |
Copyright Information:
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Copyright 2010. Published by Elsevier Inc. |
Affiliation:
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Department of Surgery, Orthopaedic Surgery Service, Memorial Sloan-Kettering Cancer Center, New York, NY, USA. Mark_E_Puhaindran@nuhs.edu.sg |
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Aged, 80 and over Biopsy, Needle Child Cohort Studies Female Follow-Up Studies Hand / pathology*, surgery Humans Immunohistochemistry Magnetic Resonance Imaging / methods* Male Middle Aged Neoplasm Staging Neoplasm, Residual / diagnosis*, surgery Predictive Value of Tests Reoperation Retrospective Studies Risk Assessment Sarcoma / diagnosis*, surgery Sensitivity and Specificity Soft Tissue Neoplasms / diagnosis*, surgery Surgical Procedures, Operative / methods Young Adult |
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