Prostatic stromal sarcoma (PSS) is a rare malignant mesenchymal tumor originating from the specialized stroma of the prostate. It is a heterogeneous tumor, in which a predominantly phyllodes architecture has been documented only in isolated case reports. The co-occurrence of a phyllodes-predominant PSS and prostate adenocarcinoma (PCA) is even more exceptional. Here, we reported a case of a 52-year-old man with the chief complaint of dysuria for 2 months in 2018. Magnetic resonance imaging (MRI) revealed a mass lesion in the left lobe of the prostate. The patient underwent surgical resection, and the pathological examination revealed PSS with a phyllodes-predominant structure accompanied by PCA. We report this rare case to provide valuable clinical information for clinicians and pathologists and to improve the awareness and diagnostic level of this disease.
Lian et al. (Wed,) studied this question.