Abstract
Purpose
Our primary objective was to describe the magnetic resonance (MR) imaging patterns of recurrent uterine cancer after surgery and their changes following concurrent chemoradiation. The secondary objective was to identify MR imaging predictors of outcome.
Materials and methods
Twenty-two consecutive women with biopsy-proven recurrent uterine cancer after surgery (cervix 13 patients, endometrium nine patients) were enrolled in this prospective study. Inclusion criteria were MR imaging at diagnosis and during follow-up and eligibility for concurrent chemoradiation. MR images were assessed for signal intensity of the pelvic relapse on T2-weighted images, site of relapse and infiltration of adjacent organs. Pre- and posttreatment MR images were compared on the basis of the same criteria. The 3D volume of relapses after treatment was calculated, and tumour response to treatment was evaluated as complete, partial, no change or disease progression.
Results
Recurrences appeared hyperintense on T2-weighted images in 22/22 (100%) patients. Pelvic relapse site was vagina in 5/22 (23%), vaginal vault in 9/22 (41%), vaginal vault with extension to the pelvic wall in 5/22 (23%) and pelvic wall in 3/22 (13%). Infiltration of adjacent organs was detected in 9/22 (41%) patients. The mean volume of recurrences on pretreatment MR images was 38.83 cm3. On posttreatment MR images, relapses appeared hypointense in 19/22 (86%) patients and hyperintense in 3/22 (14%). The mean volume of recurrences on posttreatment MR images was 18.01 cm3. Complete response was seen in 11/22 (50%) patients, partial response in 8/22 (36%) and no change in 3/22 (14%).
Conclusions
MR imaging can provide an evaluation of all parameters necessary for planning treatment and assessing response to treatment.
Riassunto
Obiettivo
L’obiettivo primario del nostro lavoro è quello di illustrare le caratteristiche RM delle recidive di neoplasia uterina dopo chirurgia, e delle relative modificazioni dopo la terapia radio-chemioterapica concomitante. L’obiettivo secondario è quello di identificare le caratteristiche RM che possano predire la risposta al trattamento chemio-radioterapico.
Materiali e metodi
Sono state incluse in questo studio prospettico 22 pazienti con recidiva di neoplasia uterina, dopo terapia chirurgica (cervice: 13 pazienti; endometrio: 9 pazienti), confermate istologicamente. Criteri di inclusione sono stati: esecuzione di una risonanza magnetica (RM), alla diagnosi e durante il follow-up, e candidate al trattamento radio-chemioterapico concomitante. L’analisi delle immagini ha incluso: intensità del segnale della recidiva pelvica di neoplasia, nelle immagini T2-dipendenti; sede della recidiva; infiltrazione organi adiacenti. È stato calcolato il volume 3D della recidiva. Le immagini RM dopo trattamento sono state confrontate con quelle pre-trattamento, seguendo i medesimi criteri. È stato calcolato il volume 3D della neoplasia, post-terapia ed è stata definita la risposta al trattamento: completa, parziale, nessuna modifica, progressione.
Risultati
Il tumore recidivo è risultato iperintenso in 22/22 (100%) pazienti. La sede della recidiva pelvica è stata: cupola vaginale in 9/22 (41%) pazienti, vagina in 5/22 (23%), cupola vaginale con estensione alla parete pelvica in 5/22 (23%); parete pelvica in 3/22 (13%). L’infiltrazione degli organi adiacenti è stata rilevata in 9/22 (41%) pazienti. Il volume 3D medio della recidiva, nelle immagini RM pre-trattamento, è stato di 38,83 cm3. Nelle immagini RM dopo trattamento la lesione apparsa ipointensa in 19/22 (86%) pazienti ed iperintensa in 3/22 (14%). Il volume 3D medio della recidiva tumorale è stato di 18,01 cm3. Undici/22 (50%) pazienti hanno mostrato una risposta completa, 8/22 (36%) una risposta parziale, 3/22 (14%) nessun cambiamento.
Conclusioni
La RM è in grado di valutare i parametri utili per la pianificazione del trattamento radiochemioterapico e di rilevare la risposta al trattamento.
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Manfredi, R., Baltieri, S., Tognolini, A. et al. Recurrent uterine cancer after surgery: magnetic resonance imaging patterns and their changes after concomitant chemoradiation. Radiol med 113, 1143–1156 (2008). https://doi.org/10.1007/s11547-008-0312-3
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DOI: https://doi.org/10.1007/s11547-008-0312-3