Perineural Myxoid Degeneration Associated With Prostatic Adenocarcinoma: A Rare Histopathological Finding

Area of Science:

• Pathology
• Oncology
• Peripheral Nerve Disorders

Background:

• Perineural myxoid degeneration is a rare, non-neoplastic condition involving myxoid material accumulation around peripheral nerves.
• Its pathogenesis is poorly understood, and it is infrequently seen in routine pathology.
• This condition can mimic more significant perineural pathologies.

Purpose of the Study:

• To describe a case of perineural myxoid degeneration associated with prostatic adenocarcinoma.
• To highlight the importance of recognizing this entity in oncologic specimens.

Main Methods:

• Histopathological examination of a radical prostatectomy specimen.
• Alcian blue staining and S100 immunoreactivity for confirmation.
• Assessment of the proliferative index.

Main Results:

• Perineural myxoid degeneration was identified adjacent to prostatic adenocarcinoma.
• The myxoid change surrounded an enlarged peripheral nerve.
• Alcian blue staining and S100 immunoreactivity confirmed the diagnosis, with a low proliferative index.

Conclusions:

• This is the first reported association of perineural myxoid degeneration with prostatic adenocarcinoma.
• Recognition of this benign entity is important to prevent diagnostic misinterpretation in oncologic pathology.
• Increased awareness can improve the identification of this uncommon histopathological finding.