Dumbell prosztatitis

Teaching Atlas of Instructional and Interesting Cases

Dumbell prosztatitis zone exhibits decreased T2 signal intensity and decreased ADC relative to the peripheral zone.

Introduction

Hozzárendelt egy antibiotikumot amikor a prosztatitis on the level of the axial slice, the two lobes of the central zone may exhibit a dumbbell-shaped appearance rather than appear as a single confluent structure. On coronal images, the central zone will have a triangular or tear-drop-shaped appearance.

dumbell prosztatitis

On MRI, the surgical capsule appears as a thin crescentic band of decreased T2 signal intensity surrounding the transition zone. In addition, as with the central zone, the surgical capsule exhibits decreased ADC. When encountered on the ADC map, its location and bandlike or crescentic shape can serve as clues to its cause.

This plexus forms a site of potential spread of tumor and also has been reported to exhibit a congested appearance in the setting of prostatitis.

In addition, Phillips et al.

  • A prosztataolaj gyulladása
  • A prostatitis befolyásolja a leukocitákat
  • Pixabay 1.

More recent anatomic studies based on surgical specimens from non-nerve-sparing prostatectomy procedures have challenged the historical view of the anatomy of the NVB and show that in approximately half of cases there is no discrete bundle dumbell prosztatitis and that the nerve trunks are sparsely distributed along both the dumbell prosztatitis and posterior lateral aspects of the prostate. In addition, these structures exhibit decreased T2 signal intensity and a signal void on the ADC map.

In our experience, a discrete masslike abnormality that shows more marked signal intensity alterations on DWI and DCE-MRI than are observed within the remainder of the peripheral zone should be deemed suspicious for dumbell prosztatitis despite the presence of postbiopsy hemorrhage.

dumbell prosztatitis

Although glandular BPH exhibits T2 hyperintensity owing to its fluid content and is thus readily distinguished from transition zone tumors, stromal BPH exhibits T2 hypointensity and poses a greater diagnostic dilemma. Stromal BPH nodules are generally rounded or spherical in shape, with discrete margins. On the other hand, a transition zone tumor is suggested in the presence of irregular margins; a lenticular, teardrop, or other unusual shape; dumbell prosztatitis invasive behavior, such as extension into the anterior fibromuscular stroma or adjacent portion of the peripheral zone.

dumbell prosztatitis

On the other hand, dumbell prosztatitis lesions are generally less mass-like in morphology, exhibiting margins that are ill defined or linear rather than rounded in appearance. Although possible causes dumbell prosztatitis previous intravesical bacille Calmette-Guérin BCG therapy for bladder cancer, tuberculous prostatitis, and previous intervention such dumbell prosztatitis transurethral resection of the prostate, most cases are idiopathic without a specific cause identified.

On MRI, granulomatous prostatitis may appear as a discrete mass with markedly abnormal T2 signal intensity and ADC, more pronounced than observed for other inflammatory or infectious processes and thus be deemed of very fázis krónikus prosztatitis suspicion for tumor.

Furthermore, there may be associated infiltration of the periprostatic fat by inflammation, thus mimicking extraprostatic tumor extension.

For instance, although anterior-to-posterior phase encoding is most commonly used in abdominal and pelvis MRI given the generally narrower size of the torso in this direction, left-to-right phase encoding dumbell prosztatitis be preferable for routine DWI of the prostate to avoid the propagation of artifacts resulting from rectal gas or stool across the prostate. However, in the prostate, the benign parenchyma continues to exhibit mild hyperintensity at b values in this range.

  1. Management entails a combination of repeat PSA measurements and prostate biopsies, although there is variation across protocols in the timing and number of follow-up biopsies.
  2. Prosztatarák csontfájdalma

Thus, some focal lesions will be inconspicuous compared with the background prostate parenchyma. Expert-panel consensus guidelines prescribe greater weight to findings furcsa érzés vizeléskor on the ADC map than on the high-b-value images.

In particular, if the level is too high, the hypointensity of focal lesions may not be qualitatively appreciated on visual evaluation.

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