'Trident sign' in pelvis: sinister sign with poor prognosis

Gupta L, Laxmikant Gupta, Mukesh Yadav, Yadav M, Sanjay Thulkar, Thulkar S
BMJ case reports · 2017 · vol. 2017 · doi:10.1136/bcr-2017-220460 · PMID:28784885 · PMC5623294
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⚙ AI-generated summary by qwen3.7-flash, 2026-08-17 ⓘ

Perineural cancer spread through the lumbosacral plexus creates a 'trident sign' on pelvic CT and MRI, which is associated with adverse survival rates and poor prognosis.

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Abstract

The perineural spread of the cancer through the lumbosacral plexus gives an appearance of 'trident sign' on contrast-enhanced CT scan and MRI. It is associated with adverse survival rates and carries a poor prognostic value.

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MeSH descriptors

Carcinoma Pelvic Neoplasms Tomography, X-Ray Computed Uterine Cervical Neoplasms Carcinoma Carcinoma Female Humans Lumbosacral Plexus Lumbosacral Plexus Lumbosacral Plexus Middle Aged Pelvic Neoplasms Pelvic Neoplasms Pelvis Pelvis Pelvis Prognosis Tomography, X-Ray Computed Uterine Cervical Neoplasms

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