Is excision necessary in the management of adult urachal remnants?: a 12-year experience at a single institution

Acute Glomerulonephritis as a Paraneoplastic Syndrome Secondary to Urachal Adenocarcinoma: An Unknown Entity

Urachal carcinoma is an uncommon malignancy with a peculiar biomolecular characterization and therefore a complex approach. It was incorporated by the World Health Organization in 2004 in the tumors of the urinary system classification. This neoplasm is generally diagnosed in advanced stages. The standard treatment is surgical, however, due to the rarity and relatively late clinical manifestation of urachal carcinomas, the survival data are mostly case reports, as well as information about medical-surgical treatment based on evidence. The data used were extracted from both the physical and electronic clinical records. Among atypical presentations reported in the literature, we report a case of urachal adenocarcinoma with simultaneous glomerulonephritis as a paraneoplastic syndrome of which there is no report to date. Surgery was carried out in our patient, unfortunately with lifetime morbidity from kidney function replacement secondary to kidney function damage by glomerulonephritis, despite previous immunosuppression treatment for rapidly progressive glomerulonephritis. It is worth mentioning that if the initial diagnosis represents a clinical challenge, treatment is even more complex, given the little information that currently exists about it. Urachal carcinoma is a diagnostic and treatment challenge. Up to now, surgery has been the treatment of choice in localized or locally advanced disease, however, with a high morbidity for the patient.

[A noteworthy case: An atypically located urachal cyst after continent urinary diversion using a MAINZ pouch with an appendix stoma]

This case presents a 29-year-old man, with a urinary diversion via MAINZ Pouch I after cystectomy due to trauma in early childhood with a history of multiple previous surgeries. The reason for the presentation was a non-specific paraumbilical swelling on the right, which was disturbing for him. Despite further diagnostics by means of magnetic resonance imaging, a clear diagnosis of the subcutaneous tissue could not be made. After surgical removal of the complete cyst and after histological work-up, the diagnosis of an urachus-cyst could be made.

A large infected urachal mass in an adult: A case report in Tanzania

Introduction and importance

Urachal Mass results from a failure of obliteration of the urachal canal during fetal growth. The aetiology of urachal masses is ambiguous, being either of a cancerous or benign origin. Much literature is stipulated in children presenting with urachal-associated diseases but few in adult patients. This study aims at elucidating the existence of urachal mass with an abscess in a patient and the management modalities.

Presentation of case

We present a case report of a 52-year-old female patient with a two months history of abdominal pain and discomfort associated with intermittent low-grade fevers, anorexia and marked weight loss throughout her illness. An abdominal ultrasound revealed the presence of an intra-abdominal mass. A CT scan showed a multilobulated urachal mass. She eventually had a successful operation and quick recovery postoperatively.

Discussion

In the adult population, most urachal-associated diseases are malignant, with few being of benign origin. With different presentations between the two aetiologies, the most benign urachal masses may lead to infection and inflammation that typically present with a lower abdominal mass and fever. Diagnosis is made by ultrasound or CT scan of the abdomen. Surgical drainage and excision of the mass are the mainstay treatment modalities.

Conclusion

Urachal masses are rare in the adult population and are often missed in initial presentations. This will constitute poor management and outcome for patients. Physicians are to be alerted of the knowledge and make a clear assessment of patients perioperatively to avoid the delayed diagnosis, which may have consequent poor outcomes.

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Rarely, The Urachus may be retained as a failure of obliteration during fetal development.

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Associated retained urachal sinuses is a congenital anomaly that results in urachal abscesses.

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Urachus associated diseases are most commonly benign but may have a cancerous etiology.

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Poorly diagnosed patients result in poor prognosis. Early identification of the presentations with physical examinations, investigations and imaging is paramount.

Silver dressing in the management of an infant's urachal anomaly infected with methicillin-resistant Staphylococcus aureus: A case report

BACKGROUND

Symptomatic urachal anomalies are rare disorders. The management of urachal remnants has historically been surgical excision because of the connection between urachal remnants and risk of malignancy development later in life. However, recent literature suggests that urachal anomalies that do not extend to the bladder can be treated with conservative management. In this case, we report a newborn with an infected urachal remnant who was treated with a combination of antibiotics and a silver-based dressing and finally recovered well.

CASE SUMMARY

Female baby A, weighing 2.88 kg at 38⁺⁵ wk of gestational age, was referred to the hospital because of a red, swollen umbilicus approximately 2 cm × 2 cm in size with yellow purulent exudate. Through physical and ultrasound examination, the baby was finally diagnosed with a urachal anomaly. We first used oxacillin to prevent infection for 3 d. On the 4^th day, microbiology testing of the umbilical exudate revealed the presence of methicillin-resistant Staphylococcus aureus (MRSA). We changed the treatment with oxacillin to vancomycin for systemic infection and treated the umbilical inflammation with a silver sulfate dressing. After 5 d, the symptoms of the umbilicus disappeared, and we discontinued silver dressing application. On the 12^th day, umbilical exudate testing was negative for MRSA. On the 14^th day, the baby's blood testing showed a white blood cell count of 14.7 × 10⁹/L, neutrophil percentage of 27.8%, and C-reactive protein level of 1.0 mg/L, suggesting that the infection had been controlled. We stopped treatment, and the baby was discharged with no complications. In this case, the infected urachal anomaly was cured with silver dressing and antibiotic application instead of surgical methods, which was a different course from that of some other urachal remnant cases.

CONCLUSION

Anomalies that do not connect with the bladder can be treated with nonoperative management, including application of conservative antibiotics and local intervention with silver-based dressings. Silver sulfate dressings are absolutely safe for neonates with judicious use, and they play an established role in preventing infection without resistance, which is a common problem with other antibiotics and antiseptics.