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Epithelial-myoepithelial carcinoma with high-grade transformation of parotid gland: A case report and literature review.

Abstract Epithelial-myoepithelial carcinoma (EMC) is regarded as a rare low-grade malignant tumor of the salivary gland, accounting for 0.4% to 1% of all salivary gland tumors. However, epithelial-myoepithelial carcinoma with high-grade transformation (EMC with HGT) is extremely rare, therefore it is easily to be inappropriately diagnosed and treated. Herein, we report an unusual case of EMC with HGT involving the parotid gland and discuss the clinical features and histological characteristic of EMC with HGT, in order to remind the doctors to take appropriate diagnosis and treatment.
PMID
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Authors

Mayor MeshTerms
Keywords
Journal Title medicine
Publication Year Start




PMID- 29245272
OWN - NLM
STAT- MEDLINE
DCOM- 20180105
LR  - 20180105
IS  - 1536-5964 (Electronic)
IS  - 0025-7974 (Linking)
VI  - 96
IP  - 49
DP  - 2017 Dec
TI  - Epithelial-myoepithelial carcinoma with high-grade transformation of parotid
      gland: A case report and literature review.
PG  - e8988
LID - 10.1097/MD.0000000000008988 [doi]
AB  - RATIONALE: Epithelial-myoepithelial carcinoma (EMC) is regarded as a rare
      low-grade malignant tumor of the salivary gland, accounting for 0.4% to 1% of all
      salivary gland tumors. However, epithelial-myoepithelial carcinoma with
      high-grade transformation (EMC with HGT) is extremely rare, therefore it is
      easily to be inappropriately diagnosed and treated. Herein, we report an unusual 
      case of EMC with HGT involving the parotid gland and discuss the clinical
      features and histological characteristic of EMC with HGT, in order to remind the 
      doctors to take appropriate diagnosis and treatment. PATIENT CONCERNS: A
      77-year-old female sought for treatment in our hospital due to pain mass in the
      left parotid gland for 6 months with rapid growth recently. DIAGNOSES: EMC with
      HGT was confirmed by final pathology, and then the result showed there were 2
      distinctly different areas in the tumor, including the typical EMC component and 
      intensive spindle cells component. INTERVENTIONS: The extensive resection surgery
      was performed. OUTCOMES: The patient was uneventful after surgery and no
      recurrence or metastasis has been observed after follow-up of 4 years. LESSONS: A
      review of literature suggested that EMC with HGT patients trend to be more aged, 
      more aggressive and poorer prognosis than typical EMC patients. In order to avoid
      misdiagnosis and inappropriate treatment, it is necessary to accurately recognize
      the differences between the EMC with HGT and typical EMC.
FAU - Li, Bowen
AU  - Li B
AD  - Department of Oral and Maxillofacial Surgery, Peking University Shenzhen
      Hospital, Shenzhen, Guangdong Province, China.
FAU - Yang, Hongyu
AU  - Yang H
FAU - Hong, Xia
AU  - Hong X
FAU - Wang, Yufan
AU  - Wang Y
FAU - Wang, Feng
AU  - Wang F
LA  - eng
PT  - Case Reports
PT  - Journal Article
PL  - United States
TA  - Medicine (Baltimore)
JT  - Medicine
JID - 2985248R
SB  - AIM
SB  - IM
MH  - Aged
MH  - Female
MH  - Humans
MH  - Myoepithelioma/diagnosis/*pathology/surgery
MH  - Parotid Neoplasms/diagnosis/*pathology/surgery
PMC - PMC5728887
EDAT- 2017/12/17 06:00
MHDA- 2018/01/06 06:00
CRDT- 2017/12/17 06:00
PHST- 2017/12/17 06:00 [entrez]
PHST- 2017/12/17 06:00 [pubmed]
PHST- 2018/01/06 06:00 [medline]
AID - 10.1097/MD.0000000000008988 [doi]
AID - 00005792-201712080-00061 [pii]
PST - ppublish
SO  - Medicine (Baltimore). 2017 Dec;96(49):e8988. doi: 10.1097/MD.0000000000008988.