Affiliation:
1. Department of Radiology, Etimesgut Sehit Sait Ertürk State Hospital, Ankara, Turkey
2. Department of Radiology, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
Abstract
Background:
Lipomas are benign fatty tumors made of fat tissue. Bladder lipomas are
extremely rare. For this reason, it is necessary to be aware of the imaging features when incidentally
detected in imaging.
Case Report:
In the abdominal Computed Tomography (CT) performed as part of the follow-up examination
of a 43-year-old patient, who had undergone surgery for adrenal adenoma five years earlier,
a 14x9x8 mm smoothly marginated, ovoid-shaped, hypodense mass lesion with a homogeneous
internal structure was detected in the anterior bladder wall. The pre-contrast density of the lesion
was measured as -105 HU. The magnetic resonance imaging performed one year after the CT
examination revealed a 14x9x8 intramural mass in the bladder wall, showing protrusion toward the
lumen. The mass was observed to be markedly hypointense on fat-suppressed T1 and T2-weighted
images and considered to be consistent with a bladder lipoma.
Discussion:
Bladder lipomas are benign lesions that can vary in clinical presentations but usually
cause hematuria. In imaging, bladder lipomas are present as homogeneous lesions containing
macroscopic fat. The differential diagnosis of bladder lipomas includes other mesenchymal rare benign
tumors that can arise from the submucosal layer of the urinary bladder including leiomyoma,
hemangioma, plasmacytoma, fibroma, and neurofibroma. Only the liposarcoma and pelvic lipomatosis
could show similar features. The less differentiated liposarcomas tend to present more heterogeneous
enhancement, irregular-shaped margins, and infiltrative behaviour. Also, appropriate multiplanar
reconstructions may allow the radiologist to determine if it is an extravesical pelvic lipomatosis.
Conclusion:
Using CT and MRI, the lesions that are rich in adipose tissue can be distinguished
from other lesions, and their diagnosis can be made to a great extent. However, a histopathological
examination is required for a definitive diagnosis.
Publisher
Bentham Science Publishers Ltd.
Subject
Radiology, Nuclear Medicine and imaging
Reference27 articles.
1. Kumar V.; Robbins S.L.; Cotran R.S.; Abbas A.K.; Fausto N.; Robbins and cotran pathologic basis of disease 2010
2. Val-Bernal J.F.; Azueta A.; Ballestero R.; Fuentes J.; Fernández-Flórez A.; Incidental bladder lipoma: a case report and review of the literature. Turk Patoloji Derg 2015,31(1),64-67
3. Wong-You-Cheong J.J.; Woodward P.J.; Manning M.A.; Davis C.J.; From the archives of the AFIP: Inflammatory and nonneoplastic bladder masses: radiologic-pathologic correlation. Radiographics 2006,26(6),1847-1868
4. Sederl J.; An unusual tumor of the urinary bladder. Zentralbl Gynäkol 1957,79(11),438-444
5. Kracht H.; Lipoma of the urinary bladder mucosa. Z Urol Nephrol 1966,59(4),269-272
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