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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2010-6-3
pubmed:abstractText
Spindle cell liposarcoma (SCLS) is presently regarded as a rare variant of well-differentiated liposarcoma (WDLPS), which has the potential for aggressive clinical behavior. WDLPS occurs most frequently in the limbs and retroperitoneum. The most common site of SCLS occurrence is the upper limbs or shoulder girdle. Herein we report the first case of primary retroperitoneal SCLS. A 60-year-old Japanese man presented with a right inferior abdominal mass. Complete excision of the mass displayed a yellowish spherical tumor with a well-circumscribed appearance measuring 98 x 95 mm. Pathological examination of the tumor revealed a neural-like spindle cell proliferation set in a fibrous background that was associated with an atypical lipomatous component, which usually included lipoblasts. Mitotic cells were scarce. Immunohistochemical analysis demonstrated that lipoblasts were S100 positive, spindle cells were CD34 positive, and both spindle cells and lipoblasts were MDM2 negative. The Ki-67 labeling index was <2%. At one year follow up, the patient was alive without local recurrence or metastasis. Although the proliferative activity of this tumor did not indicate strong malignancy, retroperitoneal liposarcoma generally has a poor prognosis. Accumulation of cases of SCLS is necessary to facilitate a more accurate evaluation of the pathology and clinical behavior of this tumor.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1440-1827
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
60
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
472-6
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Primary retroperitoneal spindle cell liposarcoma: pathological and immunohistochemical findings.
pubmed:affiliation
Division of Molecular Diagnostic Pathology, Department of Pathology, Iwate Medical University School of Medicine, Uchimaru, Morioka, Japan. y-shioi@mta.biglobe.ne.jp
pubmed:publicationType
Journal Article, Case Reports