Renal myopericytoma: A case report with a literature review

Zhang, Zhiqiang; Yu, Dexin; Shi, Hao; Xie, Dong

doi:10.3892/ol.2013.1678

Cited by 22 publications

(18 citation statements)

References 9 publications

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“…However, it most commonly occurs in young patients within the superficial soft tissues of the lower extremity. Deep-seated, visceral, and intracranial sites of disease are extremely rare [2] , [4] , [5] , [6] , [7] , [8] , [9] . Clinically, myopericytoma most often presents as a solitary, well-demarcated, slow-growing, and non-painful palpable nodule or soft tissue mass present for several years [3] , [4] , [10] .…”

Section: Discussionmentioning

confidence: 99%

Myopericytoma/myopericytomatosis of the lower extremity in two young patients: a recently designated rare soft tissue neoplasm

Peters

Caracciolo

Henderson-Jackson

et al. 2018

Radiology Case Reports

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Myopericytomas are rare, slow-growing benign perivascular tumors most commonly arising within the superficial subcutaneous soft tissues of the lower extremity. They represent one of several related perivascular tumors of myoid lineage with similar morphology and shared immunohistochemical profile including positive staining for smooth muscle actin. Histologically, myopericytoma exhibit concentric, perivascular proliferation of spindled myoid cells with bland elongated nuclei and associated blood vessels. A solitary well-demarcated nodule or mass is typically referred to as myopericytoma, whereas an infiltrative multinodular lesion has more recently been termed myopericytomatosis. At magnetic resonance imaging, tumors are most commonly superficial, may be well-defined (myopericytoma) or ill-defined (myopericytomatosis), and demonstrate highly vascularized, avidly enhancing soft tissue often with areas of internal hemorrhage. We report 2 cases involving the lower extremity (1 myopericytoma and 1 myopericytomatosis) occurring in young patients, focusing on the clinical, histopathologic, and radiologic characteristics of this relatively new distinct entity.

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Section: Discussionmentioning

confidence: 99%

Myopericytoma/myopericytomatosis of the lower extremity in two young patients: a recently designated rare soft tissue neoplasm

Peters

Caracciolo

Henderson-Jackson

et al. 2018

Radiology Case Reports

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show abstract

“…Conventional CT examinations found that the lesions were usually isodense or hypodense, homogeneous or heterogeneous, occasionally calcified, and clearly bounded [ 14 , 18 , 20 – 24 ]. In contrast-enhanced CT scans, lesions were shown as homogeneous with severe enhancement [ 5 , 17 – 20 ] or peripheral enhancement [ 5 , 14 , 15 , 22 ]. Small vessels may be seen around the lesion [ 20 ].…”

Section: Resultsmentioning

confidence: 99%

Myopericytoma occurrence in the liver and stomach space: imaging performance

Chen

Liang

2017

BMC Cancer

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BackgroundMyopericytoma is a rare and usually benign tumor, which is even rarer if it occurs in the liver and stomach space. Previous reports of myopericytoma were mostly related to its pathological manifestations, while imaging reports were rare. Here, we report the computed tomography (CT), computed tomography angiography (CTA) and magnetic resonance imaging (MRI) performance for one deep myopericytoma.Case presentationIn this study, one deep myopericytoma in the liver and stomach space is reported. A CT that was not contrast-enhanced showed a lobulated tumor with heterogeneous density, and a contrast-enhanced CT showed that the mass had progressive enhancement. CTA showed that the blood-supply of the tumor was supplied by the anterior superior pancreaticoduodenal artery and the left gastric artery. An MRI showed the lesion had isointensity on T1-weighted imaging (T1WI) and slight hyperintensity on T2-weighted imaging (T2WI). The lesion MRI enhancement characteristics were similar to the characteristics from the contrast-enhanced CT. In this case, the enhancement pattern of the tumor was the centrifugal enhancement for both the contrast-enhanced CT and MRI. After surgical resection of the tumor, the pathological diagnosis was myopericytoma, and there was no recurrence in a short-term follow-up.ConclusionThe myopericytoma generally has a rich blood supply. When there is necrosis in the center lesion, the lesion has peripheral enhancement. Abdominal myopericytoma could be categorized as having centrifugal enhancement.

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“…According to previous reports, the contrast-enhanced CT images of myopericytoma generally have a similar pattern. The tumors appear to be low-density lesions in the non-enhanced phase; however, the peripheral area of the tumor could be enhanced, showing rim-like enhancement in the arterial phase (11)(12)(13)(14)(15)(16). Small tumors are displayed as full-tumor enhancement in the arterial phase (13).…”

Section: Discussionmentioning

confidence: 99%

Imaging performance and preoperative differential diagnosis of multiple myopericytoma in the liver: A case report

Gao

et al. 2020

Mol Clin Oncol

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Myopericytoma is a rare type of benign tumor, which commonly affects all four limbs. The occurrence of myopericytoma in the liver is extremely rare. Myopericytoma with a size of >1 cm in diameter in the liver has not been previously reported. Due to the limited number of cases, the preoperative diagnosis of liver myopericytoma based on laboratory and imaging examinations is difficult. In the present case report, a patient with multiple myopericytoma in the liver, with a maximum diameter of 4.5 cm was described, with accompanying computed tomography (CT) and positron emission tomography/CT (PET/CT) imaging profiles. The aim of the present report was to discuss the preoperative differential diagnosis between myopericytoma and other common liver neoplasms, such as intrahepatic cholangiocarcinoma or liver metastasis.

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Renal myopericytoma: A case report with a literature review

Cited by 22 publications

References 9 publications

Myopericytoma/myopericytomatosis of the lower extremity in two young patients: a recently designated rare soft tissue neoplasm

Myopericytoma/myopericytomatosis of the lower extremity in two young patients: a recently designated rare soft tissue neoplasm

Myopericytoma occurrence in the liver and stomach space: imaging performance

Imaging performance and preoperative differential diagnosis of multiple myopericytoma in the liver: A case report

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