ABSTRACT
Nephrogenic adenoma is a rare, benign, metaplastic lesion predominantly seen in urinary bladder, which occurs even more rarely in the ureters. We report two such cases, arising in the ureter. Both patients were young adult males. Histology of both cases was similar, showing tubules lined by columnar cells with hobnailing of nuclei. Immunohistochemically, both cases resembled their counterparts in urinary bladder. These lesions are important to recognize, since they can easily be confused with several malignancies.
Subject(s)
Adenoma/diagnosis , Adenoma/pathology , Adolescent , Histocytochemistry , Humans , Immunohistochemistry , Ki-67 Antigen/analysis , Male , Microscopy , Racemases and Epimerases/analysis , Ureteral Neoplasms/diagnosis , Ureteral Neoplasms/pathologyABSTRACT
Nephrogenic adenoma is a rare benign metaplastic proliferation of urothelium, which is associated with chronic irritation, infection or trauma. We report nephrogenic adenoma in the urinary bladder containing stone.
Subject(s)
Adenoma , Urinary Bladder , UrotheliumABSTRACT
Nephrogenic adenoma is an uncommon metaplastic lesion of the lower urinary tract that usually is associated with antecedent inflammation or surgical procedure. The tumor is structural resemblance to renal tubule, low proliferating potential, and shows no malignant transformation, but recurrent rate of this tumor is high. For this reason, periodic follow-up endoscopy is recommended. We report a case of nephrogenic adenoma in 38 years old man with review of the literatur
Subject(s)
Adult , Humans , Adenoma , Endoscopy , Follow-Up Studies , Inflammation , Urinary Bladder , Urinary TractABSTRACT
Fibroepithelial polyps of the ureter are usually acquired rather than congenital. Most polyps are hamartomatous growths which tend to arise in the proximal portion of the left ureter. Most patients exibit either hematuria or persistent flank pain secondary to partial ureteral obstruction. Because of false positivity of urine cytology, as well as intravenous pyelogram, the correct diagnosis is confused with malignancy. Herein we report four cases of ureteral fibroepithelial polyp, which are associated with stones resulting in partial obstruction of the ureter. One of the four cases is associated with nephrogenic adenoma in the lamina propria of the adjacent ureter. The following report describes clinicopathologic findings of fibroepithelial polyp with review of literatures.
Subject(s)
AdenomaABSTRACT
Nephrogenic adenoma is rare, especially in the ureter. It is thought to represent a metaplastic phenomenon forming the tubules which resemble renal tubules. The cause is unknown but may be associated with chronic irritations such as surgical trauma, incarcerated calculi and infection. We report a case of nephrogenic adenoma of the ureter in a 44-year-old woman who bad been suffered from the left flank pain due to left ureteral stone with giant hydronephrosis.
Subject(s)
Adult , Female , Humans , Adenoma , Calculi , Flank Pain , Hydronephrosis , UreterABSTRACT
Nephrogenic adenoma is a rare proliferative response of urothelium to chronic irritation or infection. It has been reported in the bladder, ureter, renal pelvis and urethra, but to date there have been only 15 reports, of its occurrence in the ureter. We present a further case of this lesion in this unusual location.