Primary mucinous adenocarcinoma of the ureter and renal pelvis: A case report

Primary adenocarcinoma rarely occurs in the upper urinary tract and accounts for less than 1% of the urothelial tumors. Here we present a case report of a 45-year-old female patient who presented with a lump in the abdomen and pain in the right lumbar region for 2 months. Various radiological invest...

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Main Authors: Aparna A. N. Namshiker, Amala J. Kudchadker, R. G. Wiseman Pinto
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2024-12-01
Series:Indian Journal of Pathology and Microbiology
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Online Access:https://journals.lww.com/10.4103/ijpm.ijpm_575_22
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author Aparna A. N. Namshiker
Amala J. Kudchadker
R. G. Wiseman Pinto
author_facet Aparna A. N. Namshiker
Amala J. Kudchadker
R. G. Wiseman Pinto
author_sort Aparna A. N. Namshiker
collection DOAJ
description Primary adenocarcinoma rarely occurs in the upper urinary tract and accounts for less than 1% of the urothelial tumors. Here we present a case report of a 45-year-old female patient who presented with a lump in the abdomen and pain in the right lumbar region for 2 months. Various radiological investigations revealed right-sided hydronephrosis with enhancing masses in the right proximal ureter and renal pelvis associated with multiple calculi. A gross examination of the right nephrectomy specimen revealed multiple cystic areas filled with mucinous material and papillary projections in the renal pelvis. A necrotic growth was observed in the right proximal ureter in association with the staghorn calculus in the renal pelvis. Histological examination of the ureteric mass and solid areas from the renal pelvis showed acini and papillary projections lined by pseudostratified columnar epithelium showing malignant changes. Surrounding areas also revealed intestinal metaplasia with moderate to marked dysplasia in some places. The ureteric malignancy was observed to infiltrate the inner two-thirds of the wall of the ureteric muscular layer and extend until the margin of excision. Thus, a diagnosis of mucinous adenocarcinoma of the ureter and renal pelvis with intestinal metaplasia and dysplasia that occurred in association with a large staghorn calculus was made.
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spelling doaj-art-fba2f957e99341ed8809c044ee93bff22025-01-10T10:28:26ZengWolters Kluwer Medknow PublicationsIndian Journal of Pathology and Microbiology0377-49290974-51302024-12-0167492492710.4103/ijpm.ijpm_575_22Primary mucinous adenocarcinoma of the ureter and renal pelvis: A case reportAparna A. N. NamshikerAmala J. KudchadkerR. G. Wiseman PintoPrimary adenocarcinoma rarely occurs in the upper urinary tract and accounts for less than 1% of the urothelial tumors. Here we present a case report of a 45-year-old female patient who presented with a lump in the abdomen and pain in the right lumbar region for 2 months. Various radiological investigations revealed right-sided hydronephrosis with enhancing masses in the right proximal ureter and renal pelvis associated with multiple calculi. A gross examination of the right nephrectomy specimen revealed multiple cystic areas filled with mucinous material and papillary projections in the renal pelvis. A necrotic growth was observed in the right proximal ureter in association with the staghorn calculus in the renal pelvis. Histological examination of the ureteric mass and solid areas from the renal pelvis showed acini and papillary projections lined by pseudostratified columnar epithelium showing malignant changes. Surrounding areas also revealed intestinal metaplasia with moderate to marked dysplasia in some places. The ureteric malignancy was observed to infiltrate the inner two-thirds of the wall of the ureteric muscular layer and extend until the margin of excision. Thus, a diagnosis of mucinous adenocarcinoma of the ureter and renal pelvis with intestinal metaplasia and dysplasia that occurred in association with a large staghorn calculus was made.https://journals.lww.com/10.4103/ijpm.ijpm_575_22mucinous adenocarcinomarenal pelvisureter
spellingShingle Aparna A. N. Namshiker
Amala J. Kudchadker
R. G. Wiseman Pinto
Primary mucinous adenocarcinoma of the ureter and renal pelvis: A case report
Indian Journal of Pathology and Microbiology
mucinous adenocarcinoma
renal pelvis
ureter
title Primary mucinous adenocarcinoma of the ureter and renal pelvis: A case report
title_full Primary mucinous adenocarcinoma of the ureter and renal pelvis: A case report
title_fullStr Primary mucinous adenocarcinoma of the ureter and renal pelvis: A case report
title_full_unstemmed Primary mucinous adenocarcinoma of the ureter and renal pelvis: A case report
title_short Primary mucinous adenocarcinoma of the ureter and renal pelvis: A case report
title_sort primary mucinous adenocarcinoma of the ureter and renal pelvis a case report
topic mucinous adenocarcinoma
renal pelvis
ureter
url https://journals.lww.com/10.4103/ijpm.ijpm_575_22
work_keys_str_mv AT aparnaannamshiker primarymucinousadenocarcinomaoftheureterandrenalpelvisacasereport
AT amalajkudchadker primarymucinousadenocarcinomaoftheureterandrenalpelvisacasereport
AT rgwisemanpinto primarymucinousadenocarcinomaoftheureterandrenalpelvisacasereport