Myoepithelioma Possibly Originating from the Accessory Parotid Gland

Isogai, Rieko; Kawada, Akira; Ueno, K.; Aragane, Yoshinori; Tezuka, Tadashi

doi:10.1159/000075052

Cited by 19 publications

(13 citation statements)

References 16 publications

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“…Most myoepitheliomas develop from the major salivary glands 5 . In addition, it can also develop within the prostate, mammary or sweat gland 6 . In our case, our patient showed a myoepithelioma on the palm, which contains numerous sweat glands.…”

mentioning

confidence: 56%

Cutaneous myoepithelioma on the palm

Choi

Lee

Kim

2011

The Journal of Dermatology

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mentioning

confidence: 56%

Cutaneous myoepithelioma on the palm

Choi

Lee

Kim

2011

The Journal of Dermatology

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“…Only 5 cases of myoepithelioma of the APG have been reported in the English literature. Kawashima et al [4] reported a case in a 34-year-old woman, Isogai et al [2] reported a case of plasmacytoid myoepithelioma of the APG in a 47-year-old woman, and Sun et al [5] reported a case in a 41-year-old man and one in a 22-year-old woman; all of these cases were treated by surgery. Recently, Xie et al [3] described the fifth case in a 65-year-old man who was treated via an endoscopic approach.…”

Section: Discussionmentioning

confidence: 99%

“…The malignant transformation of epithelioid myoepithelioma has been described previously [2]. Complete resection along with the surrounding salivary tissue is recommended for myoepithelioma management in order to avoid tumor recurrence.…”

Section: Discussionmentioning

confidence: 99%

“…In the salivary gland, myoepithelioma is rare, accounting for 1% of all salivary gland tumors [1]. Although myoepithelioma of the salivary gland originates most frequently in the parotid gland [2], myoepithelioma of the accessory parotid gland (APG) is extremely rare, and to date, only 5 cases have been reported in the English literature [2, 3, 4, 5]. Because the clinicopathological and MRI findings of myoepithelioma of the APG have not yet been fully described, and given the rarity of this condition, we hereby describe the clinicopathological and MRI findings of an epithelioid myoepithelioma of the APG that was treated in our hospital.…”

Section: Introductionmentioning

confidence: 99%

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Epithelioid Myoepithelioma of the Accessory Parotid Gland: Pathological and Magnetic Resonance Imaging Findings

et al. 2014

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Tumors of the accessory parotid gland (APG) are rare, and pleomorphic adenoma (PA) is the most common benign APG tumor subtype. Myoepithelioma of the APG is much rarer than PA, and to date, only 5 cases have been sporadically reported in the English literature. We describe the clinicopathological and MRI findings of an epithelioid myoepithelioma of the APG that was treated in our hospital. The patient's only clinical symptom was a slow-growing and painless mid-cheek mass. The tumor was suspected to be PA before surgery based on the following MRI findings: (1) a well-circumscribed and lobulated contour, (2) isointensity and hyperintensity relative to the muscle on T1- and T2-weighted images (WIs), respectively, (3) good enhancement on contrast-enhanced T1-WIs, (4) peripheral hypointensity on T2-WIs, and (5) a gradual time-signal intensity curve enhancement pattern on gadolinium-enhanced dynamic MRI. The tumor was completely resected via a standard parotidectomy approach, and the postoperative pathological examination of the tumor, including immunohistochemistry, confirmed the diagnosis of epithelioid myoepithelioma. As it is hardly possible to distinguish myoepithelioma from PA and low-grade malignant tumors preoperatively, a pathological examination using frozen sections is helpful for surgical strategy-related decisions.

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“…A tumor arising in an accessory parotid gland is rare. In the literature, several cases have been reported, the majority of them were epithelial tumors which were diagnosed as pleomorphic adenoma (9,10,11,12), myoepithelioma (13,14), mucoepidermoid carcinoma (15), and squamous cell carcinoma (16).…”

Section: Discussionmentioning

confidence: 99%

A case of mucosa-associated lymphoid tissue (MALT) lymphoma arising in the accessory parotid gland

Urano¹,

Kiriyama²,

Abe³

et al. 2007

Oral Med Pathol

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A 62-year-old female visited our hospital complaining of a swelling in her right cheek. Computed tomography (CT) revealed a well-demarcated solid tumor, 2 × 2 cm in size, on the outer side of the right masseter muscle, located apart from the parotid gland. We suspected malignant lymphoma using fine-needle aspiration cytology, and an open biopsy was performed. Histologically, proliferation of atypical small cleaved lymphocytes was seen around the enlarged lymph follicles. Residual salivary duct epithelium was detected within the lesion. In immunohistochemical staining, these tumor cells were positive for CD20, CD79a and bcl-2, but not positive for CD10, CD3, and CD45RO. We diagnosed the tumor as mucosa-associated lymphoid tissue (MALT) lymphoma arising in an accessory parotid gland. According to the histological diagnosis, radiotherapy was done and the patient had complete remission. However, forty-three months after treatment, she had a recurrent tumor in the inguinal lymph node. [Oral Med Pathol 2007; 12: 19-22]

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Myoepithelioma Possibly Originating from the Accessory Parotid Gland

Cited by 19 publications

References 16 publications

Cutaneous myoepithelioma on the palm

Cutaneous myoepithelioma on the palm

Epithelioid Myoepithelioma of the Accessory Parotid Gland: Pathological and Magnetic Resonance Imaging Findings

A case of mucosa-associated lymphoid tissue (MALT) lymphoma arising in the accessory parotid gland

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