Renal myxoma: an unexpected differential diagnosis

Gómez-González, Carlos; Moreno-Nieto, Virginia; Vicente-Pablos, Mikel; Fernández‐Vega, Iván

doi:10.5114/pjp.2014.43967

Cited by 4 publications

(4 citation statements)

References 4 publications

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“…The MRI finding of a renal myxoma was first reported by Owari et al ( 4 ). To date, 5 cases have been reported, excluding our case ( Table 1 ) ( 1 4 5 6 7 ). In these reports, renal myxoma showed low signal intensity on T1WI and high signal intensity on T2WI.…”

Section: Discussionmentioning

confidence: 87%

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MRI Findings of Renal Myxoma: A Case Report and Literature Review

Shim

Choi

et al. 2022

J Korean Soc Radiol

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Renal myxomas are very rare benign tumors. To date, a few cases have been reported in English literature, mostly in pathology and urology journals. Thus, there are few reports on the radiological findings associated with renal myxomas. We report on the imaging findings in a case of renal myxoma in a 62-year-old male. MRI demonstrated a well-defined mass in the left renal sinus, with intermediate high signal intensity on T2-weighted images and low signal intensity on T1-weighted images. The tumor showed gradual enhancement on contrast-enhanced T1-weighted images.

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Section: Discussionmentioning

confidence: 87%

“…To date, 22 renal myxomas have been reported. Of these, 19 cases have been reported as English-language papers and 3 as Japanese-language papers ( 1 2 3 4 5 6 7 ). Including our case, there were no sex differences, with 11 cases reported in men and 8 in female.…”

Section: Discussionmentioning

confidence: 99%

MRI Findings of Renal Myxoma: A Case Report and Literature Review

Shim

Choi

et al. 2022

J Korean Soc Radiol

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“…In fact, no previous case of renal myxoma reported immunohistochemical positivity of neoplastic cells for desmin, although its expression was described for acral myxoma along with α-SMA. Occasional staining for α-SMA in renal myxoma was reported only by 3 authors 3 , 15 , 19 . To the best of our knowledge, 22 cases of renal myxoma have been reported to date 1-3 , 8-25 ( Tab.…”

Section: Discussionmentioning

confidence: 99%

Report of two primary renal tumors with myxoid features. Differential diagnosis between benign and malignant entities

et al. 2021

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Summary Renal mesenchymal neoplasms are rare entities which can have a benign or a malignant behavior. Herein we describe two renal mesenchymal tumors with myxoid stroma, investigating the wide spectrum of differential diagnosis. With our first case we considered some benign entities such as myxoma, myxoid leiomyoma, and mixed epithelial and stromal tumor; with our second case we considered some sarcomas with myxoid features such as myxofibrosarcoma, low-grade fibromyxoid sarcoma, dedifferentiated liposarcoma, and myxoid liposarcoma. During the diagnostic process, it is important to integrate histopathological, immunohistochemical, and molecular data in order to avoid misdiagnosis. We concluded our second case report was a myxofibrosarcoma grade 1. To the best of our knowledge, we described the fourth primary renal myxofibrosarcoma reported in literature.

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“…Large skeletal muscles of the thigh and buttocks have been frequently involved [3]. Nevertheless, only 17 reported cases of pure myxomas have been previously identified within the renal system in the English Language literature [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Renal myxomas do not have specific radiological findings, and they are usually misdiagnosed as malignant neoplasms.…”

Section: Introductionmentioning

confidence: 99%

Myxoma of the renal pelvis masquerading pelviureteric stenosis: conservative limited resection with renal preservation: case presentation and literature review

et al. 2020

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Background: Myxoma is a relatively rare mesenchymal tumor seen mainly in the heart and skin. Renal myxomas in particular are exceptionally rare where only 17 cases were previously reported in the English Language literature. Only 2 of the 17 reported cases were located in the renal sinus/pelvis. Case presentation: This is a case of an 18-year-old male patient who complained of right, colicky flank pain associated with abdominal pain and discomfort. Imaging findings revealed right kidney hydronephrosis with a provisional diagnosis of pelviureteric junction (PUJ) stenosis. On computed tomography, there was a very faint thin walled mass abutting the calyces, camouflaged within the dilated renal pelvis. During surgery, a polypoid mass was found at the pelviureteric junction, causing the obstruction. Histological examination showed a hypocellular, paucivascular myxoid neoplasm, with few spindle cells displaying serpentine nuclei and inconspicuous nucleoli. The tumor cells expressed immunoreactivity for vimentin, but not for S100, CD34, actin, or desmin. This will qualify as the third case of renal pelvis myxoma. Conclusion: Myxomas in the renal pelvis/sinus are extremely rare and can present with hydronephrosis and subtle radiological findings mimicking a PUJ stenosis. Being aware of this entity can save the patient unnecessary nephrectomy with possible preservation of the kidney.

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Renal myxoma: an unexpected differential diagnosis

Cited by 4 publications

References 4 publications

MRI Findings of Renal Myxoma: A Case Report and Literature Review

MRI Findings of Renal Myxoma: A Case Report and Literature Review

Report of two primary renal tumors with myxoid features. Differential diagnosis between benign and malignant entities

Myxoma of the renal pelvis masquerading pelviureteric stenosis: conservative limited resection with renal preservation: case presentation and literature review

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