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- Einarsdottir, H, et al.
(författare)
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Accuracy of cytology for diagnosis of lipomatous tumors: comparison with magnetic resonance and computed tomography findings in 175 cases
- 2004
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Ingår i: Acta radiologica (Stockholm, Sweden : 1987). - : SAGE Publications. - 0284-1851 .- 1600-0455. ; 45:8, s. 840-846
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: To assess the value of fine-needle aspiration cytology in the diagnostic work-up of lipomatous tumors of the extremities and trunk, and to identify specific radiological features that could aid in the preoperative evaluation. Material and Methods: 175 patients with subfascial lipomatous tumors who had undergone preoperative magnetic resonance imaging or computed tomography and fine-needle aspiration cytology were studied. The percentage of fat within the lesion was visually graded from the images as: none, 1-75%, 75-95%, or 95-100%. The histological and cytological diagnoses were compared and in discordant cases the radiological images were re-reviewed. Results: There was cytological and histological concordance in 96% of lipomas and in 85% of atypical lipomatous tumors (ALT) and liposarcomas. Most discordant cases exhibited 1-75% fat. Radiological review suggested that cytological sampling problems due to tumor heterogeneity were the main cause of diagnostic difficulties. The majority of tumors with less than 75% fat were liposarcomas, and in no liposarcoma was the fat content higher than 75%. Both ALT and lipoma were found in the 95-100% group. Conclusion: Cytology can be highly accurate in the diagnosis of lipomatous tumors, including ALT; however, critical comparison with the radiological findings increases diagnostic security. In tumors with fat content visually assessed as less than 75% of the tumor volume, liposarcoma is the most likely diagnosis and a cytological diagnosis of ALT or lipoma should be questioned. In lesions with 75-95% fat, liposarcoma is unlikely, but FNAC is still indicated for safety. In lesions with 95-100% fat, FNAC is only indicated if the differentiation between lipoma and ALT influences the treatment strategy.
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| 3. |
- Kreicbergs, A, et al.
(författare)
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Cytological diagnosis of bone tumours
- 1996
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Ingår i: The Journal of bone and joint surgery. British volume. - 0301-620X. ; 78B78:2, s. 258-263
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Tidskriftsartikel (refereegranskat)
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