Soft tissue chondroma of Hoffa's fat pad

Ingabire, MI; Deprez, F C; Bodart, A; Puttemans, T.

doi:10.5334/jbr-btr.72

Cited by 6 publications

(13 citation statements)

References 6 publications

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“…Indeed, the relatively larger tumor size in the current series (range = 2.6–10.2 cm, mean = 5.6 cm) contributed to the diagnostic dilemma. Similar to previous reports (12,17,18), our cases showed a predilection for the lower limb, specifically the knee region. One tumor was in close proximity to the sterno-clavicular joint but completely separable from the joint cavity and the clavicular bone.…”

Section: Discussionsupporting

confidence: 91%

“…They are rarely found in other parts of the body (7)(8)(9)(10). STCs are usually treated with conservative local excision sparing the patient unnecessary radical surgery and decreasing morbidity (11,12), with local recurrences reported in 10-18% of cases (4)(5)(6).…”

Section: Introductionmentioning

confidence: 99%

“…Occasionally, STCs may arise in more proximal nonacral locations in the appendicular skeleton, accompanied by non-classic imaging features and a relatively larger size compared to their acral counterparts. Radiologically, these tumors are problematic posing diagnostic concerns for more aggressive tumors that warrant aggressive radical surgery, and accordingly they are often labeled as indeterminate lesions (11)(12)(13)(14). Similarly, distinguishing benign from malignant cartilaginous tumors at extra-osseous sites may present a diagnostic challenge to the pathologist because of the frequent occurrence of atypical cellular features in STCs (15).…”

Section: Introductionmentioning

confidence: 99%

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Imaging of rare appendicular non-acral soft-tissue chondromas in adults with histopathologic correlation

2017

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Background Soft-tissue chondroma (STC) is a rare benign soft tissue tumor that arises primarily in acral extra-skeletal locations. Occasionally, STCs may arise in more proximal non-acral locations, accompanied by non-classic features that label them as indeterminate lesions and pose diagnostic challenge for both radiologists and pathologists alike. Purpose To explicate the potential of diagnostic imaging in the identification and characterization of appendicular non-acral STCs with emphasis on their morphologic magnetic resonance imaging (MRI) enhancement. Material and Methods Our clinical database records were searched for patients with histologically proven primary soft-tissue chondroid lesions over a five-year period. Two musculoskeletal (MSK) trained radiologists evaluated the imaging studies and an MSK pathologist revised the pathological findings. Results The study included six cases of appendicular non-acral STCs (mean age = 40.5 years). The mean size of the tumors was 5.6 cm, with four localized to the knee region, one in the thigh, and one in the sternoclavicular region. All cases showed high signal intensity matrix with low-signal intensity septa on T2-weighted MRI and post-contrast marginal/septal enhancement. The lesions were lobulated and lacked host tissue reaction except for one showing subjacent mild soft-tissue edema. Histologically, the cases lacked overt features of malignancy although one was originally misdiagnosed as chondrosarcoma. Conclusion Non-acral STCs are benign cartilaginous tumors that may pose a diagnostic challenge, both radiologically and pathologically. Collaborative imaging and pathologic workup is needed for better characterization of non-aggression of these lesions, and to avoid diagnostic pitfalls and unnecessary radical resections.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Imaging of rare appendicular non-acral soft-tissue chondromas in adults with histopathologic correlation

2017

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“…More specifically, they found that 49% were located at the fingers, 15% at the hands, 11% at the toes, 10% at the feet, 4% at the forearms, and 11% at other sites. ESCs have also been described in the popliteal region [13] , Hoffa's infrapatellar fat [14] , [15] , wrist [16] , elbow joint [17] , while some more rare locations can be the gluteal region [18] , diaphragm [19] , anterior abdominal wall [20] , axilla [21] , scalp [22] , preauricular region [4] , dura [23] , larynx [24] , pharynx [25] , neck [26] , oral cavity [27] , skin [28] , fallopian tube [29] , and parotid gland [30] .…”

Section: Discussionmentioning

confidence: 99%

Para-articular extraskeletal chondroma mimicking first metatarsophalangeal synovitis

Alaseirlis

Tsifountoudis

Konstantinidis

et al. 2017

Radiology Case Reports

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Extraskeletal chondroma is a rare benign tumor with symptoms that could mimic other common musculoskeletal pathological entities. We present a rare case of an extraskeletal para-articular chondroma of the first metatarsophalangeal joint which was initially misinterpreted as joint synovitis, based on magnetic resonance imaging findings. Histology revealed benign chondroma of the foot, which was finally treated with radical surgical excision. More than 2 years postoperatively, no recurrence of the tumor has been encountered.

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“…1 and 2). We recommend a plain knee radiograph as an initial imaging study, as findings such as soft tissue mass (haemangioma) or fat pad calcification (chondroma, synovial sarcoma) may help to suspect a tumour pathology and consider the possibility of malignancy [12,13]. An ultrasound demonstrating a hyperechoic, well-defined mass with phleboliths on plain radiographs and typical MRI features of high signal intensity on T2-weighted imaging, lobulation, septation, and central low-intensity dots may help arrive at the diagnosis of an haemangioma (Fig.…”

Section: Group Under 16 Years Oldmentioning

confidence: 99%

Hoffa’s fat pad tumours: What do we know about them?

Albergo

Gaston

Davies

et al. 2013

International Orthopaedics (SICOT)

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Purpose We report on a group of patients with tumours in the Hoffa's fat pad (HFP), their clinical presentation, histological type and treatment, including two synovial sarcomas with their clinical follow-up, which have not been described previously in the literature. Methods We performed a retrospective review of our prospectively collected database of 25 cases of HFP tumours with at least six months follow-up. Results The gender, age at presentation (over and under 16 years of age), clinical features, history of trauma, treatment chosen, and complications were recorded. The mean age of the patients was 32 years (three to 47). Six patients were under 16 years old. Pain was the most common symptom, present in 92 % (n =23/25). The final diagnoses included 23 (92 %) benign tumours and two (8 %) malignant tumours. The most common benign tumour was pigmented villonodular synovitis (PVNS) (48 % n =12). The two malignant tumours were synovial sarcomas and both presented in patients under 16 years old. Conclusions Hoffa's fat pad tumours are an uncommon and rarely diagnosed group of lesions that can be misinterpreted as any knee pathology. Although the majority of HFP tumours are benign, malignant tumours should be considered in the differential diagnosis for the paediatric population.

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Soft tissue chondroma of Hoffa's fat pad

Cited by 6 publications

References 6 publications

Imaging of rare appendicular non-acral soft-tissue chondromas in adults with histopathologic correlation

Imaging of rare appendicular non-acral soft-tissue chondromas in adults with histopathologic correlation

Para-articular extraskeletal chondroma mimicking first metatarsophalangeal synovitis

Hoffa’s fat pad tumours: What do we know about them?

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