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Videosurgery and Other Miniinvasive Techniques
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Case report

Degeneration of the symphysis pubis presenting as a submucosal urinary bladder tumour

Tomasz R. Szopiński
,
Iwona Sudoł-Szopińska
,
Mariusz I. Furmanek
,
Tomasz Dzik
,
Piotr L. Chłosta
,
Andrzej Borówka

Videosurgery and Other Miniinvasive Techniques 2012; 7 (1): 55-58
Online publish date: 2011/11/08
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- Degeneration.pdf  [0.91 MB]
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Introduction



Urinary bladder sonography is a very sensitive diagnostic technique used for visualizing urinary bladder tumours, including the most common type of bladder cancer, urothelial carcinoma (transitional cell carcinoma). The most common symptom of the latter is painless gross haematuria; however, it is also possible that only infection symptoms or only urination disorders (such as frequent urination, urinary urgency, and/or dysuria) suggest the possibility of urothelial carcinoma [1].

Case report



A 58-year-old woman was referred to a urologist with a lower urinary tract infection. Physical examination, laboratory tests, and abdominal sonography of the upper urinary tract were unremarkable. Vesical sonography showed an exophytic mass on the bladder’s anterior wall (Figure 1 A-B). Urine cytology and intravenous pyelography were normal. Cystoscopy revealed a prominence of the bladder wall covered by normal mucosa (Figure 2). The lesion sample was removed through transurethral resection of the tumour (TURT). Histopathological examination showed necrotic masses filled with fibrin without traits of inflammatory infiltrate or neoplastic cells. A follow-up ultrasonography performed 3 weeks after TURT revealed a mass in the same location as the previously resected structure. Assuming that the procedure had not been radical enough, TURT was repeated. Yet, 2 weeks later, a similarly located lesion was again visible on ultrasonography. Subsequently, magnetic resonance imaging (MRI) of the pelvis was performed, showing advanced degenerative changes of the pubic symphysis with a connective tissue that cast the anterior wall of the urinary bladder (Figure 3 A-C).

Discussion



A review of the available literature shows this case to be the first report of a pseudotumour of the bladder ensuing from advanced degenerative changes of the pubic symphysis.

Cystoscopy revealed a submucosal anomaly; therefore, in the further diagnostic process it was possible to confine the differentiation to, sporadically described, intramural bladder tumours, most importantly to leiomyoma, their most common type [2-4]. Among other, rarely described submucosal urinary bladder tumours, there are both benign [5-12] and malignant types of tumours [13-15]. Histopathological examination of the sample is critical for the correct identification of the tumour type and for determining its character.

In the herein discussed case, as a consequence of the extraordinary results of the follow-up post-TURT sonography, which again showed the presence of a urinary bladder tumour, pelvic MRI was performed, exposing the degenerative changes in the pubic symphysis, which cast the anterior wall of the bladder. A review of the literature suggests that this is the first described case of such an advanced degenerative process in the pubic symphysis, which in a tumour-like form protruded into the bladder. The case required histopathological differentiation with other individual cases of tumour-like lesions originating from the pubic symphysis. Endoscopic diagnosis may be insufficient in this regard in some selected patients [16-19].

In this case, owing to MRI scans, the original site of the lesion was correctly determined, which, together with the histopathological examination findings, allowed for the change in the planned therapeutic proceedings. Both radiologists and urologists should be made aware that there is a possibility of similar cases in patients to avoid unnecessary surgery.

References



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Copyright: © 2011 Fundacja Videochirurgii This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) License (http://creativecommons.org/licenses/by-nc-sa/4.0/), allowing third parties to copy and redistribute the material in any medium or format and to remix, transform, and build upon the material, provided the original work is properly cited and states its license.
  
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