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• Clinical Article •
Study on MRI-pathologic in lipoma arborescens and chronic synovitis adipose hyperplasia of knee joint
CHEN Wei-peng  LIN Hai-tao  YAO Pei-xu  NI Yang-peng  LIU Zu-hong  YANG Zan-li  ZHONG Zhu 

DOI:10.12015/issn.1674-8034.2016.01.010.


[Abstract] Objective: To investigate the typical MRI features of lipoma arborescens (LA) of the knee, this paper compares and analyzes it with chronic synovitis lipohypertrophy of imaging and pathology results.Materials and Methods: Retrospective analysis was performed in 14 cases including 4 cases with LA proved by pathological diagnosis and 10 with chronic synovitis lipohypertrophy with datas of MRI and pathology. Lesionectomy was performed in all patients and specimen were observed in HE staining.Results: Four of 14 cases were diagnosed with LA. The adipose tissue by which characterized "tufted" , "dendritic" or "fluffy" , mild synovial hyperplasia as well, were revealed by the MRI and pathologic results. Two cases can not only see clusters of mature adipocyte, but also scattered ones. The others diagnosed with chronic synovitis adipose hyperplasia, both in MRI and pathology, showed synovial hyperplasia obviously and adipose tissue with only a few scattered flocculent point, while one with less adipose tissue even could not be found. Coexisting osteoarthritis was seen in all cases.Conclusions: MRI and pathologic performances of LA and hronic synovitis adipose hyperplasia show diffuse fatty infiltration of the subsynovial connective tissue. They differ in the form and content of synovial fat. Meanwhile we considered LA to be a manifestation or evolution in different stage of chronic synovitis adipose hyperplasia.
[Keywords] Lipoma；Synovitis；Knee joint；Magnetic resonance imaging

CHEN Wei-peng Department of Radiology, Jieyang People’s Hospital (Jieyang Affiliated Hospital, Sun Yat-sen University), Guangdong Province, Jieyang 522000, China

LIN Hai-tao* Department of Radiology, Jieyang People’s Hospital (Jieyang Affiliated Hospital, Sun Yat-sen University), Guangdong Province, Jieyang 522000, China

YAO Pei-xu Department of Radiology, Jieyang People’s Hospital (Jieyang Affiliated Hospital, Sun Yat-sen University), Guangdong Province, Jieyang 522000, China

NI Yang-peng Department of Pathology, Jieyang People’s Hospital (Jieyang Affiliated Hospital, Sun Yat-sen University), Guangdong Province, Jieyang 522000, China

LIU Zu-hong Department of Pathology, Jieyang People’s Hospital (Jieyang Affiliated Hospital, Sun Yat-sen University), Guangdong Province, Jieyang 522000, China

YANG Zan-li Department of Orthopedics, Jieyang People’s Hospital (Jieyang Affiliated Hospital, Sun Yat-sen University), Guangdong Province, Jieyang 522000, China

ZHONG Zhu Department of Radiology, Jieyang People’s Hospital (Jieyang Affiliated Hospital, Sun Yat-sen University), Guangdong Province, Jieyang 522000, China

*Correspondence to: Lin HT, E-mail: 07htlin@163.com

Conflicts of interest   None.

Received  2015-11-12
Accepted  2015-12-10
DOI: 10.12015/issn.1674-8034.2016.01.010
DOI:10.12015/issn.1674-8034.2016.01.010.

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