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MRI and CT features of a malignant myoepithelioma of the scrotum: A case report and literature review.

ABSTRACT: Malignant myoepithelioma of the scrotum is extremely rare. We report the case of a 51-year-old man with malignant myoepithelioma of the scrotum, wherein computed tomography and magnetic resonance imaging revealed a lobulated soft tissue mass with calcification, cystic component, and solid component with gradual contrast enhancement on dynamic contrast-enhanced scans. The patient presented with scrotal induration, and there was no elevation of tumor markers and no evidence of a metastatic lesion on computed tomography and magnetic resonance imaging. Histopathological examination of the resected scrotal specimen confirmed a well-circumscribed solid tumor with septa, a small area of hemorrhage, and necrosis. The subsequent diagnosis was malignant myoepithelioma of the scrotum. This case shows that scrotal malignant myoepithelioma might appear as a well-defined lobulated mass with cystic regions. We conjecture that the enhancement pattern and apparent diffusion coefficient values can be potential markers for scrotal myoepithelial tumors.

SUBMITTER: Shinya T

PROVIDER: S-EPMC8350411 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature

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MRI and CT features of a malignant myoepithelioma of the scrotum: A case report and literature review.

Shinya Takayoshi T Kojima Yuichi Y Monobe Yasumasa Y Fujiwara Hideyo H Uehara Shinya S Kato Katsuya K

Radiology case reports 20210804 10

Malignant myoepithelioma of the scrotum is extremely rare. We report the case of a 51-year-old man with malignant myoepithelioma of the scrotum, wherein computed tomography and magnetic resonance imaging revealed a lobulated soft tissue mass with calcification, cystic component, and solid component with gradual contrast enhancement on dynamic contrast-enhanced scans. The patient presented with scrotal induration, and there was no elevation of tumor markers and no evidence of a metastatic lesion ...[more]

PMID: 34401034

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Project description:Background Intracranial extraskeletal mesenchymal chondrosarcoma (EMCS) is a rare neoplasm and often misdiagnosed before histopathological examination due to its rarity. There were few reports previously on the radiological features of intracranial EMCS. We described a 20-year-old male patient with intracranial EMCS focusing on the imaging characteristics. Case Description The patient was admitted to our hospital due to headache and dizziness for two months, without nausea, vomiting, limb convulsions and loss of consciousness during the illness. Pre-contrast computed tomography (CT) revealed a large slightly hyperdense mass with irregularly lobulated margins in the right parietal and occipital region and multiple patchy calcifications in peripheral of the lesion. The inner table of right parietal bone adjacent to the mass was compressed, thickened, and eroded. Magnetic resonance imaging (MRI) exhibited intermediate and hypo-intensity on T1-weighted images (T1WI) and slight hyper-intensity on T2-weighted images (T2WI) with extremely high intensity rim of cerebral spinal fluid (CSF) and low intensity flow-void vessel. The mass demonstrated heterogeneous remarkable enhancement and “dural tail” sign also was noted. The important imaging signs of this case are irregular calcifications of soft tissue on CT and “dural tail” sign on MRI. The patient underwent tumor resection and was followed up postoperatively with serial MRI every three months. He was alive without obvious clinical symptoms and evidence of recurrence for 9 months. EMCS is a highly invasive tumor and it is difficult to differentiate EMCS from the other intracranial malignant tumors only by clinical characteristics or findings of CT and conventional MR imaging. Radiotherapy and chemotherapy after radical resection are the best treatment choice. Therefore, postoperative patients should be reviewed routinely. Conclusions A knowledge of the imaging features could facilitate differentiation of intracranial EMCS, but the final diagnosis depends on pathological examinations. This paper focuses on the imaging characteristics of EMCS and fully describes the details of lesions in order to provide clinicians with effective differential diagnosis information and improve clinical decision-making.

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Dataset Information

MRI and CT features of a malignant myoepithelioma of the scrotum: A case report and literature review.

Publications

MRI and CT features of a malignant myoepithelioma of the scrotum: A case report and literature review.

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