A rare case of huge villous adenoma of the renal pelvis deforming the abdominal wall

Stoykov, Boyan; Kolev, Nikola; Dunev, V.R.; Genov, P.P.; Atanasov, J.A.; Mateva, Svetlana

doi:10.1016/j.eucr.2020.101183

Cited by 4 publications

(8 citation statements)

References 4 publications

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“…However, mucosuria is an uncommon presentation and was noted in only 20% of the cases. 3,4,[6][7][8][9][10][11][12][13][14][15][16] In the present case, repeated blockage of the drainage tube inserted following percutaneous nephrostomy was due to thick mucus passage. However, mucus production may be seen in rare xanthogranulomatous pyelonephritis cases, pseudomyxoma peritonei, and direct invasion of gastrointestinal tract malignancies.…”

Section: Discussionmentioning

confidence: 52%

“…The tumor was detected either as a single localized mass-like lesion or as a patch of velvety or papillary excrescences replacing pelvicalyceal lining. 3,4,[6][7][8][9][10][11][12][13][14][15][16] Microscopic examination reveals features similar to the primary villous adenoma of the gastrointestinal tract with thin, slender villi lined by basally located nuclei and abundant pale eosinophilic mucin-filled cytoplasm. Variable degree of admixed goblet cells is also noted.…”

Section: Discussionmentioning

confidence: 95%

“…Villous adenomas of the renal pelvis are very uncommon, and till now, only 14 cases have been reported in the English literature. 3,4,[6][7][8][9][10][11][12][13][14][15][16] (Table 1). They are mostly seen in the middle age to elderly male patients.…”

Section: Discussionmentioning

confidence: 99%

“…Of the reported renal pelvis villous adenoma, 40% of the cases harbored invasive adenocarcinoma. 3,4,[6][7][8][9][10][11][12][13][14][15][16] Inadequate and improper management can lead to severe consequences on the prognosis of the patients. Hence, the pathologist must examine the specimen diligently to exclude invasive components.…”

Section: Discussionmentioning

confidence: 99%

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Villous adenoma of the renal pelvis: a common entity at an uncommon location

et al. 2021

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Villous adenoma is uncommonly seen in the urogenital tract and is even more rarely seen in the upper urinary tract and renal pelvis. Like colorectal adenomas, these neoplasms can transform into adenocarcinoma. The preoperative diagnosis is challenging due to their frequent association with hydronephrosis. Herein, we present the case of a villous adenoma of the renal pelvis in a 62-year-old man presenting with recurrent urinary tract infection. The computed tomography scan showed marked hydronephrosis but no suspicious mass in the right kidney. A laparoscopic right nephrectomy was performed. Gross examination revealed a dilated renal pelvis with an irregular exophytic lesion in the renal pelvis's upper surface. The histopathological examination showed slender, elongated villi with thin fibrovascular cores, consistent with villous adenoma morphology. Isolated villous adenomas have a favorable prognosis. However, the pathologist should undertake a search for an invasive component.

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Section: Discussionmentioning

confidence: 52%

Section: Discussionmentioning

confidence: 95%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Villous adenoma of the renal pelvis: a common entity at an uncommon location

et al. 2021

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“…A total number of 82 villous adenomas of the urinary tract were identified to date. 5–42 (Table 1) The review of 82 cases revealed slight male predilection with M/F = 1.5/1. The median age of clinical presentation was 63 (range 23-94) years.…”

Section: Discussionmentioning

confidence: 99%

Traditional Serrated Adenoma of the Urinary Bladder: The First Report

et al. 2022

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A 71-year-old woman was hospitalized with hematuria and underwent cystourethroscopy. Cystourethroscopy revealed a polypoid bladder tumor. Histopathologic examination showed complex villiform growth pattern, slit-like serrations, and ectopic crypts lined by epithelium with eosinophilic cytoplasm, pseudostratified elongated nuclei, consistent with traditional serrated adenoma. Nephrogenic and intestinal metaplasia with severe inflammation were present in adjacent bladder mucosa. Molecular study of the polyp revealed mutation (p.G12V) in codon 12 of exon 2 of the KRAS gene. Traditional serrated adenoma is a rare type of colonic serrated polyp, making up less than 1% of the colonic polyps with a predilection to distal colon. In the literature, there is no traditional serrated adenoma reported outside the gastrointestinal tract. Here in we report the first extra-gastrointestinal traditional serrated adenoma within the bladder and bladder diverticulum, arising from intestinal metaplasia. The present study reports an additional information on molecular background of this unusual bladder polyp.

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Mucinous adenocarcinoma derived from villous adenoma of the kidney with muconephrosis

Kawamoto,

Ishida,

Yorozu

et al. 2024

Clinical Case Reports

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Key Clinical MessageUpper respiratory tract villous adenoma (VA) with muconephrosis is rare and should be included in the differential diagnosis when pelvic dilatation with a solid component is detected. VA may transform into malignant mucinous adenocarcinoma, which should be suspected if contrast enhancement on computed tomography (CT)/magnetic resonance imaging (MRI) and restricted diffusion on MRI are observed.

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A rare case of huge villous adenoma of the renal pelvis deforming the abdominal wall

Cited by 4 publications

References 4 publications

Villous adenoma of the renal pelvis: a common entity at an uncommon location

Villous adenoma of the renal pelvis: a common entity at an uncommon location

Traditional Serrated Adenoma of the Urinary Bladder: The First Report

Mucinous adenocarcinoma derived from villous adenoma of the kidney with muconephrosis

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