Fact-sheet: Hemangioma of urinary bladder
Updated on 09/10/2019 at 1:47 PM
View all RADEOS cases associated with this fact-sheet
Definition
Rare congenital benign tumor (0.6% of all bladder tumors).
Association with cutaneous hemangiomas of the abdomen, perineum, and thighs in one third of cases.
Possible association with Klippel-Trenaunay syndrome (5% have a bladder hemangioma).
Clinical features
Setting: adolescent or young adult.
Presents with hematuria.
Laboratory findings
Usually unremarkable
Radiography
Not contributory
Ultrasound
Bladder wall lesion, well-defined margins, echogenic, hypervascular.
CT
Bladder wall mass with well-defined margins, possible presence of intratumoral calcifications, hypervascularization on contrast injection.
Assessment of extravesical extension.
Single lesion in two thirds of cases, located at the dome or posterolaterally.
MRI
Assessment of intravesical extension.
Enhancement kinetics identical to CT
Management
In theory, biopsies should be avoided due to the hemorrhagic risk.
Surgical resection or laser treatment in the setting of hematuria.
Discussion of selective arterial embolization.
Differential diagnosis
Epithelial bladder tumors (carcinoma and adenocarcinoma).
Non-epithelial bladder tumors:
- muscular tumors: leiomyoma/sarcoma
- connective tissue tumors: inflammatory pseudotumor/neurofibroma/ganglioneuroma
- secondary tumors.
Urachal tumor.
Bladder endometriosis.