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Cavitation, Thin-walled Cysts and Bullae, their Association with Tumours. Emphysema. Fat and Calcification. Spurious Tumours. Intravascular, Pulmonary Interstitial & Mediastinal Gas, and Pneumoperitoneum.
Published in Fred W Wright, Radiology of the Chest and Related Conditions, 2022
There are two types of adipose tissue (i) white fat, which is: more common, and is widely distributed throughout the human body, and (ii) brown fat, which is more commonly found in hibernating animals, but which may also be found in man and especially in infants. The former tends to form lipomas, and the latter 'hibernomas', which are much less common. A 'hibernoma' may show IV contrast enhancement similar to that seen with a liposarcoma (Illus. LIPOSARCOMA, Pt. 2a).
Soft Tissues
Published in Joseph Kovi, Hung Dinh Duong, Frozen Section In Surgical Pathology: An Atlas, 2019
The following is a partial listing of soft tissue tumors which have been well characterized ultrastructurally: elastofibroma,212 nodular fascitis,213 fibromatosis,214-216 fibrosarcoma,217,218 fibroxanthoma,219 dermatofibrosarcoma protuberans,220,221 malignant fibrous histiocytoma (MFH),222-227 malignant schwannoma,123,228-231 hibernoma,232,233 liposarcoma,234,235 hemangioma,236 hemangiopericytoma,237 angiosarcoma,238 leiomyosarcoma,123,239 rhabdomyoma,240 rhabdomyosarcoma,241-243 synovial sarcoma,244 malignant mesenchymoma,245 alveolar soft part sarcoma123,246 and epitheloid sarcoma.247,248
Liposarcoma
Published in Dongyou Liu, Tumors and Cancers, 2017
Classified along with fibroblastic or myofibroblastic tumors, so-called fibrohistiocytic tumors, smooth muscle tumors, pericytic or perivascular tumors, skeletal muscle tumors, vascular tumors, chondro-osseous tumors, gastrointestinal stromal tumors, nerve sheath tumors, tumors of uncertain differentiation, and undifferentiated or unclassified sarcomas under tumors of soft tissues [1], adipocytic tumors are divided into (1) benign (lipoma, lipomatosis, lipomatosis of nerve, lipoblastoma or lipoblastomatosis, angiolipoma, myolipoma, chondroid lipoma, extrarenal angiomyolipoma, extra-adrenal myelolipoma, spindle cell or pleomorphic lipoma, and hibernoma), (2) intermediate (locally aggressive) (atypical lipomatous tumor [ATL] or well-differentiated liposarcoma [LPS]), and (3) malignant (dedifferentiated LPS, myxoid LPS, pleomorphic LPS, and LPS not otherwise specified [NOS]) [1].
Cervical hibernoma
Published in Baylor University Medical Center Proceedings, 2022
Mohammed Bhairis, Massime El Hammoumi, Moaad Amraoui, Faycal El Oueriachi, El Hassane Kabiri
A 58-year-old man had a mass for 18 years in the left cervical region (Figure 1a). Recently, pain and a sensation of heaviness developed in the area. The mass was less mobile and soft. No lymph nodes were palpable. Computed tomography (CT) revealed a 157 × 118 × 123 mm tumor, well circumscribed, heterogeneously enhancing, with areas of fat attenuation (Figure 1b). The patient underwent complete excision of the mass, and pathology examination revealed a hibernoma.