Chondroid lipoma of the neck: a case report
Abstract Background Chondroid lipoma, first described in 1993 by Meis and Enzinger, is a very rare lipomatous tumor. Because it is a benign tumor, it does not require radiotherapy, chemotherapy, or extensive resection. However, histologically, it is often confused with a sarcoma. It is crucial to di...
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| Format: | Article |
| Language: | English |
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BMC
2018-06-01
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| Series: | BMC Research Notes |
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| Online Access: | http://link.springer.com/article/10.1186/s13104-018-3523-2 |
| _version_ | 1818655479934484480 |
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| author | Yusei Katsuyama Toshiharu Shirai Ryu Terauchi Shinji Tsuchida Naoki Mizoshiri Yuki Mori Toshikazu Kubo |
| author_facet | Yusei Katsuyama Toshiharu Shirai Ryu Terauchi Shinji Tsuchida Naoki Mizoshiri Yuki Mori Toshikazu Kubo |
| author_sort | Yusei Katsuyama |
| collection | DOAJ |
| description | Abstract Background Chondroid lipoma, first described in 1993 by Meis and Enzinger, is a very rare lipomatous tumor. Because it is a benign tumor, it does not require radiotherapy, chemotherapy, or extensive resection. However, histologically, it is often confused with a sarcoma. It is crucial to differentiate chondroid lipoma from sarcoma to avoid choosing an inappropriate treatment strategy. Although MRI, radiography, and ultrasound have been used to evaluate chondroid lipomas, imaging cannot accurately differentiate chondroid lipoma from sarcoma. Case presentation A 39-year-old man presented to a local clinic with a 1-month history of a painless mass in his left neck. Results of a needle biopsy suggested an atypical lipomatous tumor, and the patient was referred to our hospital. Physical examination revealed a hard and mobile mass in the left neck. Plain X-ray radiographs showed an absence of calcification in the soft tissue mass. MRI revealed a well-defined and lobulated mass, and on T1-weighted images, the lesion showed heterogeneity, with higher signal intensity than that of muscle. On T2-weighted images, the septum had low-signal intensity. On T2-weighted fat-suppressed images, the signal of the mass was completely suppressed. The SUVmax of the mass on FDG PET was 1.84. An additional needle biopsy was performed, and on the basis of the results, we arrived at a diagnosis of well-differentiated liposarcoma. The mass was resected marginally. Macroscopically, the mass was encapsulated and markedly harder than well-differentiated liposarcoma. Histologically, the tumor was composed of myxoid and cartilaginous matrix, and mature fat cells and lipoblast-like cells were present. The final diagnosis was chondroid lipoma, and no recurrence was observed 1 year after surgery. Conclusions Chondroid lipoma is an extremely rare benign soft tissue tumor that is often confused with sarcoma. It is very important to differentiate chondroid lipoma from sarcoma when the SUVmax value of the mass is low, even when biopsy results suggest that it is a sarcoma. |
| first_indexed | 2024-12-17T03:10:21Z |
| format | Article |
| id | doaj.art-78a10dfffcfb4a44bfe60f8d79b60a18 |
| institution | Directory Open Access Journal |
| issn | 1756-0500 |
| language | English |
| last_indexed | 2024-12-17T03:10:21Z |
| publishDate | 2018-06-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Research Notes |
| spelling | doaj.art-78a10dfffcfb4a44bfe60f8d79b60a182022-12-21T22:05:51ZengBMCBMC Research Notes1756-05002018-06-011111510.1186/s13104-018-3523-2Chondroid lipoma of the neck: a case reportYusei Katsuyama0Toshiharu Shirai1Ryu Terauchi2Shinji Tsuchida3Naoki Mizoshiri4Yuki Mori5Toshikazu Kubo6Department of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of MedicineDepartment of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of MedicineDepartment of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of MedicineDepartment of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of MedicineDepartment of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of MedicineDepartment of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of MedicineDepartment of Orthopedics, Graduate School of Medical Science, Kyoto Prefectural University of MedicineAbstract Background Chondroid lipoma, first described in 1993 by Meis and Enzinger, is a very rare lipomatous tumor. Because it is a benign tumor, it does not require radiotherapy, chemotherapy, or extensive resection. However, histologically, it is often confused with a sarcoma. It is crucial to differentiate chondroid lipoma from sarcoma to avoid choosing an inappropriate treatment strategy. Although MRI, radiography, and ultrasound have been used to evaluate chondroid lipomas, imaging cannot accurately differentiate chondroid lipoma from sarcoma. Case presentation A 39-year-old man presented to a local clinic with a 1-month history of a painless mass in his left neck. Results of a needle biopsy suggested an atypical lipomatous tumor, and the patient was referred to our hospital. Physical examination revealed a hard and mobile mass in the left neck. Plain X-ray radiographs showed an absence of calcification in the soft tissue mass. MRI revealed a well-defined and lobulated mass, and on T1-weighted images, the lesion showed heterogeneity, with higher signal intensity than that of muscle. On T2-weighted images, the septum had low-signal intensity. On T2-weighted fat-suppressed images, the signal of the mass was completely suppressed. The SUVmax of the mass on FDG PET was 1.84. An additional needle biopsy was performed, and on the basis of the results, we arrived at a diagnosis of well-differentiated liposarcoma. The mass was resected marginally. Macroscopically, the mass was encapsulated and markedly harder than well-differentiated liposarcoma. Histologically, the tumor was composed of myxoid and cartilaginous matrix, and mature fat cells and lipoblast-like cells were present. The final diagnosis was chondroid lipoma, and no recurrence was observed 1 year after surgery. Conclusions Chondroid lipoma is an extremely rare benign soft tissue tumor that is often confused with sarcoma. It is very important to differentiate chondroid lipoma from sarcoma when the SUVmax value of the mass is low, even when biopsy results suggest that it is a sarcoma.http://link.springer.com/article/10.1186/s13104-018-3523-2Chondroid lipomaSarcomaFDG PET |
| spellingShingle | Yusei Katsuyama Toshiharu Shirai Ryu Terauchi Shinji Tsuchida Naoki Mizoshiri Yuki Mori Toshikazu Kubo Chondroid lipoma of the neck: a case report BMC Research Notes Chondroid lipoma Sarcoma FDG PET |
| title | Chondroid lipoma of the neck: a case report |
| title_full | Chondroid lipoma of the neck: a case report |
| title_fullStr | Chondroid lipoma of the neck: a case report |
| title_full_unstemmed | Chondroid lipoma of the neck: a case report |
| title_short | Chondroid lipoma of the neck: a case report |
| title_sort | chondroid lipoma of the neck a case report |
| topic | Chondroid lipoma Sarcoma FDG PET |
| url | http://link.springer.com/article/10.1186/s13104-018-3523-2 |
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