TITLE:
Glomus Tumor of the Kidney: A Case Report with CT, MRI, and Histopathological Findings
AUTHORS:
Jillian W. Lazor, Thomas J. Guzzo, Zhanyong Bing, Priti Lal, Parvati Ramchandani, Drew A. Torigian
KEYWORDS:
Glomus Tumor, Kidney, Renal, Computed Tomography (CT), Magnetic Resonance Imaging (MRI)
JOURNAL NAME:
Open Journal of Urology,
Vol.6 No.5,
May
18,
2016
ABSTRACT: We describe the computed tomographic (CT)
and magnetic resonance imaging (MRI) features of a very rare renal neoplasm, a
glomus tumor. Our patient was a 68-year-old woman with a history of high grade
T1 stage bladder cancer, status post intravesical Bacillus Calmette-Guérin
(BCG) therapy and left ureteral stent placement, who presented for routine
follow-up imaging evaluation of the urothelial tract. Computed tomographic
urography (CTU) incidentally demonstrated a 1.7 cm well-circumscribed,
non-calcified, non-fat containing lesion in the left renal cortex with arterial
phase continuous peripheral rim enhancement and central hypoattenuation
relative to enhanced renal parenchyma. Subsequent MRI showed the lesion to be
isointense in signal intensity relative to the renal parenchyma on T1-weighted
imaging and hyperintense on T2-weighted imaging. No macroscopic fat or
microscopic lipid was seen within the lesion, and there were no foci of susceptibility
artifact on T1-weighted images. Diffusion-weighted and apparent diffusion
coefficient images demonstrated no restricted diffusion. Contrast-enhanced
images demonstrated continuous peripheral rim enhancement in the arterial phase
and persistent rim enhancement with partial centripetal fill in of enhancement
on venous phase images, similar to the pattern seen on CT. Partial left
nephrectomy was performed for the suspected solid renal neoplasm.
Histopathological assessment was diagnostic of a renal glomus tumor.