Reliability in villous tumors staging between preoperative MRI and histopathological examination.
Purpose: This study aimed to assess the reliability of rectal villous tumors staging between rectal MRI and histological examination used as the Gold Standard and to investigate causes for discrepancies. Methods: The rectal 1.5 T MR scans of 40 patients followed for a histologically proven rectal vi...
| Publicado en: | Abdominal Radiology Vol. 45; no. 10; pp. 3046 - 3057 |
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| Autores principales: | , , , , , , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Oct2020
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=145372689&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 145372689 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 2366004X JT14 jtl: Abdominal Radiology issn: 2366004X maglogo: N pubinfo: dt: Oct2020 vid: 45 iid: 10 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 145372689 143951070 10.1007/s00261-020-02450-5 145372689 ppf: 3046 ppct: 11 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Reliability in villous tumors staging between preoperative MRI and histopathological examination. aug: au: Vogrig, Céline Leclerc, Julie Haghnejad, Vincent Orry, Xavier Remen, Thomas Germain, Adeline Laurent, Valérie affil: Brabois Imaging Department, Nancy University Hospital, Université de Lorraine, Nancy 1, Allée du Morvan, 54 511, Vandœuvre-lès-Nancy, France sug: ab: Purpose: This study aimed to assess the reliability of rectal villous tumors staging between rectal MRI and histological examination used as the Gold Standard and to investigate causes for discrepancies. Methods: The rectal 1.5 T MR scans of 40 patients followed for a histologically proven rectal villous adenoma were retrospectively included. Two independent experienced radiologists staged each tumor according to the TNM classification and described the occurrence of retraction of the rectal wall or spiculations within the associated mesorectum. A third radiologist collected tumor's morphological characteristics. Results: Among the 40 villous tumors studied, 25 (63%) were non-invasive and 15 (37%) were invasive. The mean volume of tumors with spiculations and retraction was significantly greater (p < 0.05) compared to tumors without these characteristics. Spiculations and retraction of the rectal wall were observed regardless of the definitive histological stage and did not represent a malignancy criterion. A weak interobserver reliability [Gwet's AC2: 0.31 (0.04–0.57)] in T-staging was observed between the two readers. Reader 1 showed a high reliability [Gwet's AC2: 0.90 (0.81–0.99)] in T-staging between Histopathological examination and preoperative MRI. In the opposite, reader 2 showed a weak reliability [Gwet's AC2: 0.31 (0.03–0.58)] in T-staging. He overstaged all tumors (100%) with spiculations (p < 0.05). Conclusion: MRI understaged rectal villous adenoma and was unable to detect degenerative criteria, along with slight Interobserver agreement. The typical worrisome signs of rectal tumor, such as retractions and spiculations, occurred in all stages and were responsible for misstaging in most cases, in particular bulky tumors. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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