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Secondary rectal linitis plastica caused by prostatic adenocarcinoma-magnetic resonance imaging findings and dissemination pathways:A case report

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World Journal of Radiology 2024年第9期16卷 473-481页

作者： Andres Antonio Labra Giancarlo Schiappacasse Rolando Alfonso Cocio Jorge Tomás Torres Fernando Omar González Joaquin Alberto Cristi Marcela Schultz Department of Radiology Facultad de Medicina Clínica Alemana-Universidad del DesarrolloSantiago 7650568Región MetropolitanaChile Department of Pathology Clínica Alemana de SantiagoSantiago 7650568Región MetropolitanaChile

BACKGROUND Secondary rectal linitis plastica(RLP)from prostatic adenocarcinoma is a rare and poorly understood form of metastatic spread,characterized by a desmoplastic response and concentric rectal wall infiltration with mucosal *** complicates endoscopic diagnosis and can mimic gastrointestinal *** case series underscores the critical role of magnetic resonance imaging(MRI)in identifying the distinct imaging features of RLP and highlights the importance of considering this condition in the differential diagnosis of patients with a history of prostate *** SUMMARY Three patients with secondary RLP due to prostatic adenocarcinoma presented with varied clinical *** first patient,a 76-year-old man with advanced prostate cancer,had rectal pain and *** showed diffuse prostatic invasion and significant rectal wall thickening with a characteristic"target sign"*** second,a 57-year-old asymptomatic man with elevated prostatespecific antigen levels and a history of prostate cancer exhibited rectoprostatic angle involvement and rectal wall thickening on MRI,with positron emission tomography/computed tomography PSMA confirming the prostatic origin of the metastatic *** third patient,an 80-year-old post-radical prostatectomy,presented with refractory *** revealed a neoplastic mass infiltrating the rectal *** all cases,MRI consistently showed stratified thickening,concentric signal changes,restricted diffusion,and contrast enhancement,which were essential for diagnosing secondary *** confirmed the prostatic origin of the neoplastic involvement in the *** Recognizing MRI findings of secondary RLP is essential for accurate diagnosis and management in prostate cancer patients.

关键词： Rectal linitis plastica Prostatic adenocarcinoma Signet ring cell carcinoma metastatic spread Magnetic resonance imaging Concentric wall infiltration Case report

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