MRI Appearance of Prostatic Stromal Sarcoma in a Young Adult

Abstract

Prostatic stromal sarcoma (PSS) is quite rare. Herein, we describe magnetic resonance imaging (MRI) features of a PSS identified in a 26-year-old man with dysuria and hematuria. MRI clearly depicted the extent and multinodular appearance of the tumor, which was mainly located in the central zone of the prostate. The tumor appeared as a heterogeneously signal-hyperintense mass with a pseudocapsule on T2-weighted imaging. Contrast-enhanced T1-weighted MRI showed necrotic portions in the gradually enhanced solid mass, and diffusion-weighted imaging permitted the accurate assessment of the local extent of the tumor. Thus, the appearance on MRI was quite different from that of adenocarcinoma of the prostate.

Male Reproductive System: Prostate Gland, Seminal Vesicles, and Scrotum

“…Similarly, prostate sarcoma of Case 24 shows homogenous signal intensity on T1-weighted image and heterogeneous signal intensity on T2-weighted image. However, the signal intensity on T2-weighted image is not as high as the reported case and without visible pseudocapsule [ 6 ]. Therefore, it remains unclear whether prostate sarcoma could be differentiated from an advanced staged prostate carcinoma with similar wide extent by MRI alone.…”

“…By its rapid growth, tumor necrosis is usually evident on computed tomography (CT) as a non-enhancing cystic part within a solid tumor and on magnetic resonance image (MRI) as a high signal intensity area as bright as water on T2-weighted images. There is only one report on the MRI fi nding of prostate sarcoma published in the literature, in which prostate sarcoma shows homogeneous low signal intensity on T1-weighted image and heterogeneous high signal intensity with pseudocapsule on T2-weighted image [ 6 ]. Similarly, prostate sarcoma of Case 24 shows homogenous signal intensity on T1-weighted image and heterogeneous signal intensity on T2-weighted image.…”

“…Prostate sarcoma is a rare prostate malignancy [ 6 ]. It is characterized by rapid growth or a wide extent of the tumor at the time of its diagnosis.…”

Treatment of prostatic stromal sarcoma with robot-assisted laparoscopic radical prostatectomy in a young adult: A case report

“…PSS is an extremely rare subtype of prostate sarcoma with <30 documented cases (2,3,5,6). The majority of these lesions present in the sixth and seventh decades of life, and the majority of patients present with symptoms of urethral obstruction, such as in the present case (2,3,5,6). Patients with PSS usually have a PSA level within the normal range.…”

MRI feature analysis of uncommon prostatic malignant tumors

“… 3 4 5 As there is a low morbidity rate for uncommon prostatic neoplasms, MRI features have rarely been described in the literature and they are mainly reported as case reports. 6 7 8 In this letter, we retrospectively reviewed the MRI features of 15 cases of uncommon prostatic malignant tumors, which, to our knowledge, is the largest number of these tumors reported to assess MRI features. As accurate diagnosis is critical for appropriate clinical workup and management, the aim of this study was to explore some salient MRI characteristics of uncommon prostatic malignant tumors to improve understanding and facilitate the differential diagnosis.…”