Urinary bladder chondroma

Chondroma in the Urinary Bladder: An Extremely Rare Finding

Chondroma, commonly observed in the bones, has limited documentation when found in soft tissues. To date, only 8 chondromas in the urinary bladder have been reported, all in females. Here, we describe a 54-year-old female who presented with a chondroma located at the anterior wall of the urinary bladder. An incidental 5 mm enhanced focus was identified on the right bladder wall during a contrast-enhanced computerized tomography (CT). Subsequent cystoscopy did not reveal any abnormalities, and both urinalysis and urine cytology were unremarkable. However, a CT urogram reconfirmed suspicions of malignancy, which a cystoscopy validated. The patient underwent a transurethral resection of the bladder tumor, which was identified as a bladder chondroma. During the surgical incision, a submucosal lesion was found, which was further confirmed with histopathological evaluation. Over a year-long follow-up using imaging and urine cytology, no recurrence was observed. This case reinforces earlier findings and underscores the predilection for females between their 5th and 7th decades with a positive prognosis.

Chondroma of the urinary bladder: A case report

RATIONALE

Chondromas are benign tumors comprising cartilaginous tissue that commonly occur in the small bones of the hands and feet. Chondromas are extremely rare in extraskeletal soft tissues, and only six cases of bladder chondromas have been reported thus far.

PATIENT CONCERNS

A 75-year-old woman presented with abdominal pain and urinary symptoms, including increased frequency and a weak stream.

DIAGNOSIS

Cystoscopy revealed a well-defined bladder mass over the anterior bladder wall. The pathology report showed neoplastic chondrocytes within the hyalinized and focal myxoid matrix, and immunopositivity for S-100, leading to the seventh known diagnosis of bladder chondroma.

INTERVENTIONS

The tumor was endoscopically resected. The postoperative stay was uneventful, and 5 days later, the patient was discharged after the removal of the urinary catheter.

OUTCOMES

One month after surgery, repeated cystoscopy showed no recurrence of the bladder tumor, and the patient reported improvement in urinary symptoms and relief of lower abdominal pain.

LESSONS

Chondromas of the urinary bladder can present as urinary symptoms and abdominal pain in older patients. Transurethral resection is the treatment of choice.

Rare case of bladder chondroma causing lower urinary tract symptoms

An extraosseous or soft tissue chondroma is a rare, benign cartilaginous tumour characterised by the formation of mature hyaline cartilage. The majority of osseous chondromas are located within the medullary cavity of long bones. Soft tissue chondromas are extremely rare with only five cases affecting the bladder being reported in the literature. Soft tissue chondroma of the bladder is a rare cause of lower urinary tract symptoms and abdominopelvic pain. All reported cases of soft tissue chondromas of the bladder have occurred in women in their fifth to seventh decades of life. We describe the case of a 65-year-old woman diagnosed with a soft tissue chondroma of her bladder while being investigated for lower urinary tract symptoms.

Chondroma of the Bladder: An Atypical Localization

Chondroma is a benign tumour of mesenchymal origin that is composed of cartilage and rarely located in soft tissues, being described so far only in four cases, as located in the bladder, according to our knowledge. We describe the fifth case of a 67-year-old woman who consulted for microscopic haematuria, with an endoscopic finding of submucosal nodular image in the anterior wall of the bladder, which after resection and the histologic study shows cartilage and fibroconnective tissue, in part hyalinised, and positive immunohistochemical staining of cells with vimentin and S-100; this fact can support the diagnosis of bladder chondroma.

Chondroma of the Bladder: A Case Report and Review of the Literature

Chondromas are benign tumors composed of mature hyaline cartilage (Bahnassy & Abdil-Khalik, 2009). Extraskeletal presentation of chondromas is extremely rare and mostly occurs in the soft tissues of the extremities, mainly the hands and feet (Bahnassy & Abdil-Khalik, 2009; Rapini et al, 2007). There are currently only 3 case reports in the literature of chondroma of the urinary bladder (Cho & Horvai, 2015; Reichard et al, 2014; Sloan & Rapoport, 1985). Here we present a case of urinary bladder chondroma with low proliferative potential managed by transurethral resection.

A rare case of bladder chondroma

Soft tissue chondromas are benign tumours that arise commonly in the hands and feet of adults, but rarely in other locations. Only two prior cases of chondroma of the urinary bladder wall have been reported. We describe a third case and discuss similarities and differences between the three cases reported to date.