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Solid extratesticular masses evaluated with sonography: pathologic correlation

M C Frates1, C B Benson, D N DiSalvo

  • 1Department of Radiology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.

Radiology
|July 1, 1997
PubMed
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Ultrasound can identify extratesticular masses but cannot distinguish between benign and malignant conditions. This study found a 16% malignancy rate, higher than previously reported, highlighting the need for biopsy.

Area of Science:

  • Radiology
  • Oncology
  • Pathology

Background:

  • Extratesticular masses are uncommon, and their differentiation between benign and malignant conditions is clinically important.
  • Previous reports suggest a low malignancy rate for extratesticular masses.

Purpose of the Study:

  • To evaluate the utility of sonography in differentiating benign from malignant solid extratesticular masses.
  • To determine if specific sonographic features can predict the nature of these lesions.

Main Methods:

  • Retrospective review of sonograms from 19 patients with palpable extratesticular masses who underwent biopsy.
  • Correlation of sonographic findings with final pathologic diagnoses.

Main Results:

  • Sixteen of 19 masses (84%) were benign, and three (16%) were malignant.

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  • Benign lesions included adenomatoid tumors, lipomas, epidermoid cysts, and others.
  • Malignant lesions included liposarcoma, leiomyosarcoma, and spindle cell malignancy.
  • No specific sonographic features reliably distinguished between benign and malignant extratesticular masses.

    • Conclusions:

    • The observed malignancy rate of 16% is higher than previously suggested.
    • Sonography is effective in localizing extratesticular masses but cannot reliably determine their nature.
    • Biopsy remains essential for definitive diagnosis of extratesticular masses.