Hibernomas Tumors are solitary well-circumscribed nodules that typically are asymptomatic. Usually, tumors are located in the interscapular region, axillae, neck, or mediastinum. Histologically, hibernomas are composed of embryonic brown lipoblasts termed mulberry cells because of their appearance. Lipomas present as subcutaneous nodules of 2-10 cm. Lipomas often are lobulated.
Consistency is rubbery.
Skin overlying the lesion is normal and is not connected to the tumor. Neck, back, and proximal extremities are affected most commonly. CT scan is indicated in suspected liposarcoma. CT scans are useful in distinguishing between lipomas and liposarcomas. Fine-needle aspiration is indicated when the diagnosis of liposarcoma is suspected.