A rare case of epidermoid cyst in urinary bladder

Abstract

Epidermoid cyst in urinary bladder is a rare pathology with only one known case published prior to this study. In this article, we described imaging findings of epidermoid cyst in the urinary bladder and other parts of urogenital system. Plain CT KUB was performed on Multidetector 16 slice computed tomography scanner-GE Bright speed Elite and plain magnetic resonance imaging on 1.5 T Siemens Magnetom Avanto.

Squamous cell carcinoma arising in an epidermal cyst of urinary bladder associated with vesicolithiasis: A case report and review of the literature

“…ECs are more frequent in males than females [4] and can occur at any age and any part of the body, however, they are usually present in the hair-bearing areas such as the scalp, face, neck, trunk, and back regions [3] , [4] , [5] . Although cases of ECs are reported in the urinary tract involving the kidney [6] and penis, its occurrence is extremely rare in urinary bladder and ureter ( Table 1 ). ECs can rarely transform into malignant neoplasms such as squamous cell carcinoma (SqCC) and basal cell carcinoma.…”

“…Computed tomography and Magnetic resonance imaging: small calcified mass with partial enhancement at the same location as well as right hydronephrosis Upper part of ureter Yes Epidermoid cyst No Not applicable Wang, et al, 2013 [14] 31/M Non Sonography: Avascular lesion with onion-ring hyper and hypoechoic pattern. Computed tomography: cystic mass at right wall of the urinary bladder Right lateral wall Yes Epidermal cyst No After 18 months no recurrence noted Akyuz, et al, 2019 [4] 59/F Burning pain during urination Sonography: three polypoidal lesions the largest being 6 mm in diameter Left lateral wall Yes Epidermoid cyst No After 3 months no recurrence noted Puppala, et al, 2019 [6] 45/F Lower abdominal pain, urinary frequency, and left flank pain Sonography: focal soft tissue thickening with calcified speck in the posterior wall of the urinary bladder. Computed tomography: focal nodular thickening of posterior wall of the urinary bladder with calcification Magnetic resonance imaging: a well-defined lesion in the posterior wall of the urinary bladder Posterior wall Yes Epidermoid cyst No Not applicable …”