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Updated: Jul 3, 2026

Retzius-Sparing Robot-Assisted Radical Prostatectomy

Retzius-Sparing Robot-Assisted Radical Prostatectomy

Published on: May 19, 2022

Retroperitoneal "Triton" tumor.

D Radovanovic¹, V Vukotic-Maletic, D Stojanovic

¹University Clinical Center, Dr Dragisa Misovic, Belgrade, Serbia. radovanovicdrdragan@yahoo.com

Hepato-Gastroenterology

|July 11, 2008

Summary

Malignant Triton tumors, rare in sporadic cases, present a poor prognosis, especially in the retroperitoneum. Early diagnosis and aggressive surgery are crucial for managing this aggressive peripheral nerve sheath tumor.

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Area of Science:

Oncology
Pathology
Surgical Oncology

Background:

Malignant Triton tumors are rare peripheral nerve sheath tumors with rhabdomyoblastic differentiation, often linked to Neurofibromatosis type 1.
Retroperitoneal localization portends a poor prognosis due to diagnostic challenges and proximity to vital organs.

Observation:

A 60-year-old female presented with a retroperitoneal presacral mass, diagnosed postoperatively as a Malignant Triton tumor.
Despite no initial visible metastases, the patient developed widespread pulmonary, hepatic, and splenic metastases within a month of aggressive surgical resection (posterior pelvic exenteresis).

Findings:

Core needle biopsy may offer more diagnostic accuracy than other preoperative methods.
Adjuvant therapies like chemotherapy and irradiation have shown unreproducible results in managing Malignant Triton tumors.

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Last Updated: Jul 3, 2026

Retzius-Sparing Robot-Assisted Radical Prostatectomy

Retzius-Sparing Robot-Assisted Radical Prostatectomy

Published on: May 19, 2022

The presented case highlights the rapid progression and poor prognosis associated with retroperitoneal Malignant Triton tumors.

Implications:

Refined diagnostic techniques, including advanced biopsy methods and cytogenetic analysis, are essential for patient stratification.
Identifying patients who would benefit from radical surgical intervention is critical for improving outcomes.
This case underscores the aggressive nature of retroperitoneal Malignant Triton tumors and the need for improved diagnostic and therapeutic strategies.