Co-existence of intramuscular spindle cell lipoma with an intramuscular ordinary lipoma:report of a case

Laliotis, Aggelos; Bree, Eelco de; Vasilaki, Stavrianthi; Papadakis, Michael; Melissas, John

doi:10.5114/pjp.2013.38143

Cited by 12 publications

(10 citation statements)

References 30 publications

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“…Reproduced with permission (Nishida J, 2007; pending permission from Springer Science and Business Media). 17 E) MRI showing a mass with increased signal intensity infiltrating the thenar muscles. The lesion appears isointense relative to subcutaneous fat and is compatible with a deep infiltrating intramuscular lipoma.…”

Section: Figurementioning

confidence: 99%

Intramuscular lipoma: a review of the literature

2014

Orthop Rev

105

165

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Lipomas are the most common type of soft tissue mesenchymal tumors. They are typically located subcutaneously and consist of mature fatty tissue. When they occur under the enclosing fascia, they are called deep-seated lipomas. Infrequently, lipomas can arise inside the muscle and are called intramuscular lipomas. Intramuscular lipomas have been commonly investigated and categorized in the same group as other deep-seated and superficial lipomatous lesions. Their clinical, histological and imaging characteristics may resemble well-differentiated liposarcomas, further adding to the difficulties in the differential diagnosis. This article summarizes the available literature and describes the typical epidemiological, pathological and clinical features of intramuscular lipomas, as well as delineating their treatment and prognosis.

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Section: Figurementioning

confidence: 99%

Intramuscular lipoma: a review of the literature

2014

Orthop Rev

105

165

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“…We read the Letter to the Editor submitted by Chernev et al, in which the authors challenge the description of our case which concerned the co-existence of an intramuscular spindle cell lipoma with an intramuscular ordinary lipoma with great interest [1]. It is quite unusual to question so intensely data which have been presented by colleagues.…”

Section: Dear Editormentioning

confidence: 74%

Letter to the Editor Re: Co-existence of intramuscular spindle cell lipoma with an intramuscular ordinary lipoma: Report of a case Ivan Chernev, Shane Mctighe, Dirk P. Stanley

Laliotis

Bree²,

Vasilaki³

et al. 2014

pjp

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Dear Editor,We read the Letter to the Editor submitted by Chernev et al., in which the authors challenge the description of our case which concerned the co-existence of an intramuscular spindle cell lipoma with an intramuscular ordinary lipoma with great interest [1]. It is quite unusual to question so intensely data which have been presented by colleagues. Certainly, our description of this rare case only includes data of complete verity.Chernev et al. contend that since no MRI of the ordinary lipoma was provided, its anatomical relationship with the spindle cell lipoma had not been demonstrated. Since the number of figures in a case report is usually limited, simply mentioning its image findings in the manuscript should be considered sufficient Thus, we had not included radiographic images of the ordinary lipoma in our manuscript. As described, the synchronous existence of both lesions was initially detected at a CT scan made for staging, as sarcoma was suspected after core needle biopsy. Unfortunately, we cannot provide an appropriate 3D reconstruction of the area of interest, since we have only films and no digital CT scan file. However, the ordinary CT films provide clear evidence that this case concerns two different chest wall tumors ( Fig. 1A-H of this response letter).Further, Chernev et al. questioned whether the spindle cell lipoma was intramuscular, as noted in our manuscript, and suggest that its localization might be intermuscular instead. As demonstrated in Fig. 1 (MRI) and 2 (surgical specimen) of our case report, the lesion was evidently intramuscular. This observation can be further supported by Fig. 1A and 1B of this response letter.The authors of the Letter to the Editor expressed their interest in the type of the ordinary lipoma. We had not specified whether the lipoma was well-circumscribed or infiltrative, since we considered this fact of minor importance. However, for their information, it concerned a well-circumscribed type (Fig. 2 of this response letter) which had been simply enucleated out of its pseudocapsule during the surgical procedure.Subsequently, we cordially thank Chernev et al. for their comment that the other four cases with concurrent spindle cell and ordinary lipoma, which have been previously published and are referred to in the discussion of our manuscript, concern cases with subcutaneous or unspecified localization of the spindle cell lipoma or with existence of a spindle cell lipoma in an intramuscular ordinary lipoma in a single lesion. Their observation makes our presented case all the more rare and unique due to the co-existence of intramuscular spindle cell lipoma and intramuscular ordinary lipoma as two separated masses in one patient.The authors of the Letter to the Editor suggested that cytogenetic analysis of the spindle cell lipoma should have been performed. Although indeed in some cases of lipomatous tumors cytogenetic analysis might be helpful in their differential diagnosis, it is definitely not a standard procedure in cases in which the histological dia...

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“…The World Health Organization categorizes these into the following: lipoma, lipomatosis, lipomatosis of nerve, lipoblastoma, angiolipoma, myolipoma, chondroidlipoma, spindle cell/pleomorphic lipoma, and hibernoma. Spindle cell lipoma has been reported to be found inside of an intramuscular lipoma and coexisting lipomas with spindle cell lipomas [ 8 ]. Other entities to differentiate include neurofibroma, nuchal fibroma, cellular angiofibroma, extramammarymyofibroblastoma, dermatofibrosarcoma, and schwannoma.…”

Section: Discussionmentioning

confidence: 99%

Spindle Cell Lipoma: A Rare, Misunderstood Entity

Seo

Kang

2014

Arch Craniofac Surg

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Spindle cell lipoma, a rare variant of lipoma, is a benign tumor found in the posterior neck and shoulder. A 24-year-old man with a close family history of malignant lymphoma had presented with a large, firm, nodular mass found in the right supraclavicular area. Excision of the deeply located mass revealed a pale yellow, rubbery nodule which grossly resembled an enlarged lymph node, with a variant of lymphoma as a primary suspect. However, pathological studies revealed the lesion to be a spindle cell lipoma. Although atypical in location, spindle cell lipoma should always be kept in differential diagnosis of a newly-noted soft tissue mass, as this entity may be easily cured by simple excision.

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Co-existence of intramuscular spindle cell lipoma with an intramuscular ordinary lipoma:report of a case

Cited by 12 publications

References 30 publications

Intramuscular lipoma: a review of the literature

Intramuscular lipoma: a review of the literature

Letter to the Editor Re: Co-existence of intramuscular spindle cell lipoma with an intramuscular ordinary lipoma: Report of a case Ivan Chernev, Shane Mctighe, Dirk P. Stanley

Spindle Cell Lipoma: A Rare, Misunderstood Entity

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