Department of Clinical Sciences, Faculty of Medicine, Yarmouk University, Irbid, Jordan.
Faculty of Medicine, Yarmouk University, Irbid, Jordan.
Medicine (Baltimore). 2021 Nov 19;100(46):e27876. doi: 10.1097/MD.0000000000027876.
Parosteal lipomas are rare neoplasms comprising mature adipocytes situated in a proximity to bone. Although these tumors follow a benign course, the reactive osseous changes that may occur with such lesions might raise the suspicion of malignancy.
Here we present a case of a 33-year-old male patient complaining of pain and swelling in the right anterior forearm without history of trauma.
An magnetic resonance imaging of the region revealed a lobulated intramuscular fat intensity mass within the supinator muscle. Bony projection inseparable from the anterolateral radial diaphyseal cortex and periosteum was also seen. The radiological features suggested the diagnosis of parosteal lipoma.
After the radiological diagnosis of a parosteal lipoma, the patient was offered a total surgical excision of the mass.
The mass was removed successfully. Histopathology showed mature benign adipose tissue bordered by thin fibrous septa confirming the diagnosis of parosteal lipoma. Follow-up magnetic resonance imaging after 6 months did not reveal any signs of complications or recurrence.
Distinction of the features of parosteal lipomas is needed to establish the accurate diagnosis, discriminate it from malignant lesions, predict potential neurovascular compromises, and follow up until a curative action is planned.
骨旁脂肪瘤是一种罕见的肿瘤，由位于骨旁的成熟脂肪细胞组成。尽管这些肿瘤呈良性过程，但可能发生的与这些病变相关的反应性骨变化可能会引起恶性肿瘤的怀疑。
我们在此报告了 1 例 33 岁男性患者的病例，该患者抱怨右前臂疼痛和肿胀，无外伤史。
该区域的磁共振成像显示旋后肌内有分叶状肌肉内脂肪强度肿块。还可见与桡骨干前外侧分离的骨突和骨膜。放射学特征提示骨旁脂肪瘤的诊断。
在放射学诊断为骨旁脂肪瘤后，为患者提供了肿块的完全手术切除。
肿块成功切除。组织病理学显示成熟良性脂肪组织，边界为薄纤维间隔，证实了骨旁脂肪瘤的诊断。6 个月后的磁共振成像随访未显示任何并发症或复发的迹象。
需要区分骨旁脂肪瘤的特征，以建立准确的诊断，将其与恶性病变区分开来，预测潜在的神经血管并发症，并进行随访，直到计划进行治愈性治疗。
