Renal Myxoma, an Incidental Finding

Thakker, Parth; Ramsey, Tam; Navarro, Fernando A.

doi:10.1016/j.eucr.2017.04.006

Cited by 5 publications

(8 citation statements)

References 5 publications

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“…Unfortunately, renal myxomas lack any specific radiological findings and are often mistaken for other malignant lesions, especially renal cell carcinoma. Radiologically, they present as cystic or solid masses with variable degrees of enhancement, and are more commonly located within the renal parenchyma [4,12]. In our case, there was an illdefined mass where a faint, thin wall was overlooked on initial imaging studies.…”

Section: Discussionmentioning

confidence: 65%

“…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%

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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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Section: Discussionmentioning

confidence: 65%

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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“…Its morphology and prognosis are indistinguishable from Myxomas in other body sites. [3][4][5][6] The differential diagnosis -although all are uncommonas well includes neoplasms that exhibit prominent myxoid features including myxoid liposarcoma, low-grade fibromyxoid sarcoma, low-grade myxofibrosarcoma, rhabdomyosarcoma, leiomyosarcoma-myxoid variant, myxoid leiomyoma, myxoid schwannoma, myxoid neurofibroma, and mucinous tubular and spindle cell carcinoma. A panel of immunohistochemical stains (including S-100, EMA, Pan-cytokeratin, desmin, SMA, CD34, MUC4, and Ki-67) is helpful in addition to the histological morphology to establish the diagnosis and exclude other differential diagnoses.…”

Section: Discussionmentioning

confidence: 99%

“…It has been found to stain positively for vimentin and negative for EMA, Pan‐cytokeratin, desmin, SMA, and S‐100. Its morphology and prognosis are indistinguishable from Myxomas in other body sites 3–6 …”

Section: Discussionmentioning

confidence: 99%

Renal myxoma – a case report of a rare kidney tumor, its differential diagnosis and literature review

et al. 2022

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Introduction Myxoma is a rare benign kidney tumor. Only 18 cases have been described in the literature. We report a new case of renal myxoma that arises from the renal parenchyma. Case presentation A 56‐year‐old man, medically free, presented complaining of intermittent vague left‐side abdominal pain for 1 year, otherwise no history of gross hematuria or lower urinary tract symptoms. Clinical examination revealed a soft, non‐tender abdomen. All laboratory investigations were within normal. Abdominal and pelvic computed tomography scan with contrast revealed a large mass located in the upper pole of left kidney with the possibility of renal cell carcinoma. A laparoscopic‐assisted left robotic radical nephrectomy was performed. Microscopic examination revealed renal myxoma. Conclusion Renal myxoma is a very rare benign kidney tumor with excellent prognosis. Considering its rarity, it is important to recognize this entity to avoid diagnostic errors with other neoplasms with prominent myxoid features.

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“…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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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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Renal Myxoma, an Incidental Finding

Cited by 5 publications

References 5 publications

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

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

Renal myxoma – a case report of a rare kidney tumor, its differential diagnosis and literature review

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

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