Yonsei Med J.  2009 Feb;50(1):174-176. 10.3349/ymj.2009.50.1.174.

A Large Cystic Phyllodes Tumor of the Prostate

• Chung HC
• Lee HS
• Kim TI
• Kim DI
• Park KH
• Song JM

• KMID: 1782987
• DOI: http://doi.org/10.3349/ymj.2009.50.1.174

Abstract

We report a 65 year-old man with a large cystic phyllodes tumor of the prostate. The patient complained of abdominal discomfort and had a soft palpable mass. Computer tomography showed a solid and cystic mass in the pelvic fossa; the mass was adjacent only to the prostate. We excised the mass. Microscopic findings of the mass showed hyperplastic epithelium lined cysts with leaf-like intraluminal epithelia lined stromal projections, less than 2 mitotic counts/10 HPF, low-to-moderated cellularity, and mild-to-moderate cytoplasm atypia. The pathological findings were consistent with a phyllodes tumor of the prostate, a low-grade tumor. Twenty-eight months after the operation, the patient was well with no recurrence or metastases.

Keyword

Phyllodes tumor; prostate; low grade tumor

MeSH Terms

Aged
Biopsy
Humans
Male
Phyllodes Tumor/*pathology/radiography/*surgery
Prostatic Neoplasms/*pathology/radiography/*surgery
Tomography, X-Ray Computed

Figure

• 

  Fig. 1 Computer tomography shows about a 13.7 cm solid and cystic mass in the pelvic fossa.

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  Fig. 2 (A) Microscopic finding shows pseudopapillary structure with cleft like lesion. (hematoxylin and eosin stain × 12.5). (B). High resolution microscopic finding shows spindle shape tumor cells and low-to-moderate cytoplasm atypia (hematoxylin and eosin stain × 400).

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