Chondro-osteoblastic Metaplasia in Canine Benign Cutaneous Lipomas

Ramı́rez, G.A.; Altimira, J.; García, B.; Vilafranca, M.

doi:10.1016/j.jcpa.2009.06.007

Cited by 9 publications

(9 citation statements)

References 11 publications

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“…Причины формирования остеолипом слюнной железы -пролиферация мезенхимальных мультипотенциальных клеток вследствие травмы и длительной ишемии [10]. Некоторые авторы отмечают, что при контакте опухоли с периостом происходит формирование периостоподобной фиброзной оссифицирующей бляшки с метапластической трансформацией фибробластов в остеоциты и хондроциты [11].…”

Section: Parosteal Osseous Lipoma Of the Temporal Bone Concurrent Witunclassified

Parosteal osseous lipoma of the temporal bone concurrent with involvement of the parotid salivary gland

et al. 2016

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The paper describes a case of parosteal lipoma of the temporal bone, by simultaneously involving the parotid salivary gland. Computed tomography performed in a 48-year-old man showed that in the area of the posterior edge of the glenoid fossa of the right temporal bone there was a massive (1.5×1.7×0.9-cm) exostosis extending down from the skull base. The exostosis was surrounded by a 3.5×3.6×5.3 soft tissue mass that was located in the projection of the right parotid salivary gland with a capsule and minor calcifications. Morphological examination determined a sessile exostosis-like mass in the area of the periosteum of the temporal bone. Foci of desmal and enchondral ossification (types III and IV according to the classification of Miller et al.) could be seen in the adjacent fatty tissue. The tumor underwent necrotic and dystrophic changes (Milgram's Stage 3). Temporal bone involvement was accompanied by osseous sialolipoma of the right parotid salivary gland. In this case, the fatty component accounted for 60-80% of salivary gland volume. Terminal secretory segments, ducts, and bone trabeculae with calcification foci and hematopoietic elements were uniformly distributed among the fatty tissue. None similar case has been found in the literature.

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Section: Parosteal Osseous Lipoma Of the Temporal Bone Concurrent Witunclassified

Parosteal osseous lipoma of the temporal bone concurrent with involvement of the parotid salivary gland

et al. 2016

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“…Well-differentiated liposarcomas (WDL) are characterized by predominant mature adipocytes and varying numbers of lipoblasts and atypical adipocytes, intersected by fibrous or myxoid tissue [ 3 , 6 , 8 ]. To our knowledge, liposarcoma with chondroid metaplasia has not been reported in domestic animals, while there have been some reports of cases of lipoma with chondroid metaplasia [ 1 , 9 , 10 , 11 ]. In this report, we document a canine case of WDL with chondroid metaplasia in the auricle.…”

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confidence: 99%

“…Based on these findings, the cartilage component of the tumor may have derived from chondroid metaplasia of the neoplastic adipose tissue rather than from neoplastic chondrocytes or the auricular cartilage. In dogs, some lipoma cases showed chondroid metaplasia, which were described as chondrolipoma [ 1 , 9 , 10 , 11 ]. Chondrolipomas do not contain lipoblasts and atypical cells, in contrast to this case.…”

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confidence: 99%

Well-differentiated liposarcoma with chondroid metaplasia in the auricle of a dog

Tomita

Sunden

Okamoto

et al. 2017

The Journal of Veterinary Medical Science

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A 13-year-old spayed female dog had a mass in the left auricle. Grossly, connection between the mass and original auricular cartilage was not recognized. The mass was unencapsulated and contained multiple islands of mature hyaline cartilage and neoplastic adipocytes. The neoplastic cells comprised predominant mature adipocytes, scattered lipoblasts and irregular round to spindle cells with moderate atypia. The atypical cells occasionally had lipid droplets. A diagnosis of well-differentiated liposarcoma (WDL) with chondroid metaplasia was made. This is the first report for liposarcoma with chondroid metaplasia in the auricle of domestic animals.

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“…6 Nevertheless, neoplasms with histological features resembling those reported for chondrolipoma in human beings have been published. 9,10,12 Differential diagnosis of these tumors includes chondroid lipoma, mesenchymoma, hamartoma, and chondroid metaplasia.…”

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confidence: 99%

“…These cells may lose the ability to differentiate in the appropriate tissue and to acquire the specific phenotype during migration via systemic circulation. 10 Chondroid metaplasia often is a sequel of local trauma such as in lipomas located close to bone. 10 In the case described herein, the lesion was distant from bone, so this possibility was rejected.…”

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confidence: 99%

A mammary gland chondrolipoma in the dog

2012

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A 12-year-old intact female dog was submitted to surgery to remove a well-circumscribed mass located near the left inguinal mammary gland. At histological examination, the mass was unencapsulated and composed by lobules of fat cells and scattered isles of cartilaginous tissue. Chondroblasts and chondrocytes showed moderate signs of atypia and often were located singularly or in small clusters within the stroma of the neoplasm. Immunohistochemical analysis revealed that cells were vimentin and S-100 positive, whereas no immunoreactivity was showed for cytokeratin, cytokeratin 5/6, cytokeratin 14, and P63. A diagnosis of chondrolipoma was made based on microscopic findings.

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Chondro-osteoblastic Metaplasia in Canine Benign Cutaneous Lipomas

Cited by 9 publications

References 11 publications

Parosteal osseous lipoma of the temporal bone concurrent with involvement of the parotid salivary gland

Parosteal osseous lipoma of the temporal bone concurrent with involvement of the parotid salivary gland

Well-differentiated liposarcoma with chondroid metaplasia in the auricle of a dog

A mammary gland chondrolipoma in the dog

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