| Literature DB >> 34797330 |
Asma'a Al-Mnayyis1, Sarah Al Sharie2, Mohammad Araydah2, Muna Talafha2,3, Fadi Haddad2.
Abstract
RATIONALE: 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. PATIENT CONCERNS: 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. DIAGNOSIS: 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. INTERVENTION: After the radiological diagnosis of a parosteal lipoma, the patient was offered a total surgical excision of the mass. OUTCOMES: 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. LESSONS: 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.Entities:
Mesh:
Year: 2021 PMID: 34797330 PMCID: PMC8601361 DOI: 10.1097/MD.0000000000027876
Source DB: PubMed Journal: Medicine (Baltimore) ISSN: 0025-7974 Impact factor: 1.889
Figure 1Parosteal lipoma of the proximal anterolateral forearm. Axial T1-weighted (A), coronal T1-weighted (B), coronal proton density (PD) fat saturated (C), and sagittal PD fat saturated (D) MRI of the right elbow and forearm demonstrate a lobulated parosteal lipoma with a bone protuberance projecting inside.
Figure 2Parosteal lipoma of the proximal anterolateral forearm. Axial fat saturated T1-weighted (A), coronal fat saturated T1-weighted (B), and sagittal fat saturated T1-weighted (C) MRI of the right elbow and forearm after contrast administration showed enhancement of the septae and periosteum within the marginally enhanced parosteal lipoma.
Figure 3Parosteal lipoma of the proximal anterolateral forearm with internal radial bone protuberance. Axial bone window (A) and soft tissue window (B) computed tomography scan of the right forearm.
Figure 4Intraoperative image of the excised tumor.
Figure 5PRISMA flow diagram of the article selection process.
Literature review of case reports data summary.
| No. | Study ID | Year of publication | Age | Sex | Symptoms | Duration of symptoms, mo | Diagnostic methods | Location of the lipoma | Measurements of the lipoma, cm | Nerve compression | Follow-up period, mo |
| 1 | Henrique et al 2002 | 2002 | 57 | F | Sensory loss, weakness (Rt hand) | — | x-Ray, ultrasound, MRI | Rt humerus | 9 × 7 × 4 | Radial nerve | 1 |
| 2 | Berry et al 1973 | 1973 | 30 | M | Weakness (Rt hand) | 18 | Physical examination, EMG, and surgical exploration | Rt forearm | — | Radial nerve | — |
| 3 | Le Minor et al 1992 | 1992 | 67 | M | Pain (Lt hand) | 1/4 | x-Ray, CT | Lt first metacarpal | 1.9 In diameter | — | — |
| 4 | Rishab et al 2021 | 2021 | 47 | M | Pain, swelling (Rt forearm) | 12 | x-Ray, MRI | Rt radius | 4 × 4 × 6 | Posterior interosseous nerve | 3 |
| 5 | Hashmi et al 2014 | 2014 | 45 | F | Difficulty in walking and maintaining up right posture during sitting | 18 | x-Ray, MRI | Femur | 8 × 6.5 × 14 | — | — |
| 6 | Thomas et 1953 | 1953 | 58 | M | Weakness, swelling (Rt forearm) | 3/4 | x-Ray | Rt radius | — | Posterior interosseous nerve | — |
| 7 | Jones et al 1989 | 1989 | 32 | M | Painless mass (Rt thigh) | 240 | CT, MRI | Rt femur | 18 × 13 × 8.5 | — | — |
| 8 | Goldman et al 1993 | 1993 | 53 | F | Swelling (Lt leg), 16 lb. weight loss | 60, 12, and recent respectively | x-Ray, CT, MRI | Lt calf | 11 × 7 × 5, 9 × 6 × 7 | — | — |
| 9 | Seki et al 2006 | 2006 | 66 | F | Painless mass (Rt leg) | — | x-Ray, MRI | Rt fibula | — | Common peroneal nerve | 48 |
| 10 | Cil et al 2008 | 2008 | 20 | M | Mass (forehead) | 36, 1 1/4 | CT | Frontal bone | 7 × 4.5 | — | — |
| 11 | Morishita et al 2015 | 2015 | 5 | M | Swelling (forehead) | 48 | CT, MRI | Frontal bone | — | — | 24 |
| 12 | Kim et al 2006 | 2006 | 57 | F | Mass (posterior chest wall), progressive intercostal neuralgia | 36 | CT | Lt 6th rib | 9 × 6 × 4 | 6th Intercostal nerve | 2 |
| 13 | Aoki et al 2015 | 2015 | 64 | M | Rapidly growing mass (Rt thigh) | 2 | x-Ray, MRI | Rt femur | 18 × 13 × 6 | — | 6 |
| 14 | Balani et al 2014 | 2014 | 38 | M | Painless swelling (Lt upper back) | 36 | x-Ray, MRI | Lt scapula | 4.5 × 5.5 × 6.0 | — | — |
| 15 | Yu et al 2000 | 2000 | 37 | M | Asymptomatic | — | x-Ray, MRI | Lt femur | 7.5 × 2.5 × 4.5 | — | — |
| 16 | Fernández-Sueiro et al 2006 | 2006 | 52 | M | Pain, swelling (wrists, hands, ankles and feet) | 6 | Bone scan, x-ray, CT, MRI | Both wrists | — | — | 72 |
| 17 | Sun et al 2013 | 2013 | 48 | M | Slow-growing mass (chin), occasional numbness (Rt lower lip) | 240 | CT | Mandible | 7 × 5 × 5 | — | — |
| 18 | Myint et al 2015 | 2015 | – | M | Slowly growing painless mass (thoracic spine) | 36 | Ultrasound | Thoracic spine (T4, T5, T6 spinous processes) | 7.8 in diameter | — | — |
| 19 | Asirvatham et al 1994 | 1994 | 40 | F | Gradually increasing swelling, discomfort (Rt thigh) | — | x-Ray, CT, MRI, bone scan | Rt femur | — | — | 18 |
| 20 | Başarir et al 2017∗ | 2017 | 46 | M | Pain, swelling | 60 | MRI | Rt humerus | 13 × 8 × 8 | 1 Case: the brachial plexus, 4 cases: the radial nerve, the rest had no nerve compression | 16 |
| 10 | F | Swelling | 12 | MRI | Rt tibia | 6 × 6 × 6 | |||||
| 40 | M | Swelling | 36 | CT, MRI | Lt forearm | 7 × 5 × 5 | |||||
| 50 | F | Swelling | 84 | MRI | Lt radius | 9 × 6 × 4 | |||||
| 39 | F | Pain, swelling, muscle weakness | 12 | MRI | Rt forearm | 10 × 3 × 3 | |||||
| 46 | F | Swelling | 18 | MRI | Rt humerus | 10 × 6 × 3 | |||||
| 62 | F | Pain, swelling | 240 | CT, MRI | Rt humerus | 6 × 4 × 1 | |||||
| 33 | M | Pain, Swelling | 60 | MRI | Rt forearm | 7 × 5 × 3 | |||||
| 46 | F | Pain, swelling | 24 | MRI | Lt humerus | 10 × 8 × 4 | |||||
| 57 | F | Pain, swelling | 96 | MRI | Rt thigh | 10 × 8 × 6 | |||||
| 56 | F | Pain, swelling | 3 | MRI | Lt humerus | 5 × 5 × 7 | |||||
| 60 | M | Numbness (shoulder) | 4 | MRI | Rt humerus | 10 × 7 × 5 | |||||
| 21 | Chaudhary et al 2013 | 2013 | 65 | F | Mass (Rt arm) | 12 | x-Ray, MRI | Rt humerus | 12 × 5 × 8 | — | — |
| 22 | Murugharaj et al 2019 | 2019 | 55 | M | Progressively growing mass (Rt forearm) | 360 | x-Ray, MRI | Rt radius | 8 × 8 × 4.5 | — | 24 |
| 23 | Rustagi et al 2020 | 2019 | 32 | F | Painless swelling (Rt forearm) | 12 | x-Ray, MRI | Rt radius | 4.8 × 3 × 2 | — | 12 |
| 24 | Yamamoto et al 2001 | 2001 | 68 | F | Painless mass (Rt small finger) | 36 | x-Ray, CT, MRI | Rt small finger | 12 × 8 × 8 | — | 28 |
| 25 | Brooks et al 1989 | 1989 | 64 | M | Gradually enlarging Rt index finger mass. | 360 | x-Ray, CT | Rt index finger | — | — | — |
| 26 | Steiner et al 1981 | 1981 | 50 | M | Pain, Swelling (mandible) | 3/4 | x-Ray | Mandible | 1.5 In diameter | — | — |
| 27 | Moon et al 1964 | 1964 | 62 | F | Painless mass (Lt forearm) | 24 | x-Ray | Lt radius | 6 × 3.5 × 3.5 | Posterior interosseous nerve | 60 |
| 28 | Lidor et al 1992∗ | 1992 | 72 | F | Complete extensor paralysis | 24 | x-Ray | Radius | — | 2 cases: Posterior interosseous nerve, 2 cases: superficial radial nerve, 1 case: no nerve compression | — |
| 40 | F | Complete extensor paralysis | 4 | x-Ray | Radius | — | — | ||||
| 53 | F | Painful growing tumor with paresthesia of ring finger | 10 | x-Ray | Radius | — | |||||
| 55 | F | Slow-growing mass | 3 | x-Ray | Radius | — | |||||
| 40 | F | Painful growing tumor with paresthesia of fingers | 8 | x-Ray, CT | Rt radius | 4 × 3.5 × 4 | |||||
| 29 | Jang et al 2009 | 2009 | 50 | M | Rt pleuritic pain accompanied by acute respiratory symptoms, such as cough, sputum, and fever | 2 | x-Ray, CT | Rt 7th rib | 8 × 6 × 2.5 | — | 4 |
| 30 | Imbriaco et al 2003 | 2003 | 60 | M | Progressive painful mass (Rt posterior upper chest) | 4 | CT | Rt 4th rib | 5 × 3.5 | — | 26 |
| 31 | Xu et al 2020 | 2020 | 59 | M | Painless swelling (Rt upper back) | — | x-Ray, CT, MRI | Rt scapula | 3.2 × 7.6 × 6.6 | — | — |
| 32 | Rau et al 2006 | 2006 | 70 | M | Mass (Lt thigh) | — | MRI | Lt femur | 9.0 × 7.5 × 4.0 | — | 12 |
| 33 | Demos et al 1984 | 1984 | 51 | F | Mass (Lt arm), pain, numbness (Lt hand) | 60 | x-Ray, CT | Lt humerus | 6 In diameter | — | — |
| 34 | Kim et al 1999 | 1999 | 46 | F | Progressive painful mass (Lt thigh) | 7 | x-Ray, MRI | Lt femur | 3 × 3 | — | — |
| 35 | Nie et al 2017 | 2017 | 40 | M | Slowly growing mass (Rt clavicle) | 240 | x-Ray, MRI | Rt clavicle | 3 × 2 × 2 | — | — |
| 36 | Saksobhavivat et al 2012 | 2012 | 35 | F | Mass (Lt leg) | 3 | x-Ray, MRI | Lt fibula | 3.5 × 3.0 × 3.0 | — | 4 |
| 37 | Kawashima et al 1993 | 1993 | 44 | F | Mass (Rt leg) | 24 | x-Ray, CT, MR | Rt tibia | 4.5 × 3 × 2 | — | 4 |
| 38 | Avram et al 2004 | 2004 | 69 | M | Progressive difficulty with extending left long and ring fingers | 4 | — | Lt forearm | 5 in length | Posterior interosseous nerve | 8 |
| 39 | Vikas et al 2020 | 2020 | 54 | F | Progressive weakness of the right-hand extensors including thumb | 5 | x-Ray, MRI | Rt radius | — | Posterior interosseous nerve | 7 |
| 40 | Nishida et al 1998∗ | 1998 | 60 | F | Inability to extend (Lt hand) | 2 | CT, MRI | Lt radius | 6.5 × 4.5 × 2.0 | Posterior interosseous nerve | 40 |
| 61 | F | Painless Mass (Lt forearm) | — | x-Ray, CT, MRI | Lt radius | 4.5 × 4.2 × 2.8 | — | 15 | |||
| 41 | Salama et al 2010 | 2010 | 83 | F | Acute and progressive weakness (Rt-hand extensors), painless swelling (Rt forearm) | 1 1/2 | x-Ray, MRI | Rt radius | — | Posterior interosseous nerve | 6 |
| 42 | Saaiq et al 2017 | 2017 | 53 | M | Weakness of extension of the fingers and the thumb (Lt hand) | 7 | MRI, electromyography, nerve conduction studies | Lt radius | 6 × 5 × 4 | Posterior interosseous nerve | 4 |
| 43 | Aydingoz et al 2000 | 2000 | 39 | F | Mass (Lt thigh) | 4 | x-Ray, CT, MRI | Lt femur | — | — | — |
| 44 | Murakami et al 2014 | 2014 | 50 | F | Mass (Lt parieto-occipital portion) | 240 | CT, MRI | Skull | 5 × 8 | — | — |
| 45 | Tzeng et al 2005 | 2005 | 56 | F | Pain (Lt forearm), numbness, pain (Lt thumb) | 2 | x-Ray, CT, ultrasound | Lt radius | 3 × 2 × 2.3 | Superficial radial nerve | 15 |
| 46 | Go et al 2018 | 2018 | 33 | M | Mass (chest wall) | 24 | CT, MRI | Rt 4th rib | 3 in diameter | — | — |
| 47 | Sathe et al 2008 | 2008 | 20 | M | Slow growing mass (Rt side of chest) | 168 | CT | Rt 4th rib | 5 × 3 × 2.5 | — | — |
| 48 | Lu et al 2020 | 2020 | 70 | M | Mass (Lt arm) | 288 | x-Ray, MRI | Lt humerus | 2.7 × 1.9 × 0.9 | — | 60 |
| 49 | Present case | 2021 | 33 | M | Pain, swelling (Rt forearm) | — | CT, MRI | Rt humerus | 4.3 × 3.1 × 5.4 | Posterior interosseous nerve | 6 |
Case series.
CT = computed tomography, EMG = Electromyography, F = female, M = male, MRI = magnetic resonance imaging, Rt = right, Lt = left.