Para-articular Chondroma Research Articles

Intrakapsularni i paraartikularni hondromi kolena - prikazi slučaja

Introduction: Intracapsular and Para-articular chondroma is a rare variant of the extraskeletal chondromas. It arises from the capsule and/or the para-articular connective tissue of the large joints (mostly the knee) and is a result of cartilaginous metaplasia. In the course of time these tumors ossify and this is where their second name comes from: Para-articular osteochondromas. Case reports: We report six new cases of para-articular chondroma of the knee. On physical examination there was slow-growing solid mass in the knee and moderate pain. The radiological findings and CT scan show soft-tissue mass with variable amount of ossification, and on histological examination the presence of mature hyaline and connective cartilage was confirmed in all of the cases. Conclusion: The diagnosis of these benign tumors is made with correlation of clinical, radiological and histological features. Treatment of choice is surgical excision.

A rare case of para-articular chondroma of the hip joint in an adolescent

Extraskeletal chondromas are unusual benign skeletal tumors which do not arise from the bone or perisoteum. They are predisposed to occur in adults usually around the knee joint. We report a rare form of Extraskeletal chondroma arising from the outer layer of the capsule of the hip joint in an adolescent male which was excised surgically and it turned out to be a para-articular chondroma of the hip joint. In conclusion, ESPAOC lesions are extremely rare. It requires a thorough clinical examination and radiographic investigation to diagnose these tumors. The treatment is surgical excision of the tumor mass. A total excision might not be possible in all patients such as ours. In these cases, the part of the tumor causing symptomatic disconcern might be excised to allow functional range of movements of the affected joint.

Para-articular Osteochondroma of the Knee

Abstract We report a case of para-articular chondroma located in the infrapatellar fat pad of the knee of a 42-year-old woman with a history of anterior knee pain and restricted range of motion. On clinical examination, a solid palpable mass in the infrapatellar region was detected. Radiography and computed tomography of the knee revealed the presence of 3 different “popcorn”-like gross calcifications within Hoffa’s fat pad. Magnetic resonance imaging showed areas of signal intensity in Hoffa’s fat pad that were consistent with calcific nodules surrounded by chondral tissue. During arthroscopy, a dense extrasynovial mass was discerned within Hoffa’s fat pad. The mass was entirely removed through an open approach medial to the patellar tendon. Resection specimens consisted of 3 well-circumscribed nodules of 5 × 2.5 × 1.5, 2 × 2 × 1, and 1.5 × 2 × 1 cm, respectively. Grossly, these nodules were surrounded by adipose tissue and presented a thin fibrous membrane. Histologic examination showed that the nodules were composed of cartilaginous tissue surrounded by fibrous connective and adipose tissue with multifocal endochondral ossification. The precise pathogenetic mechanism of these tumors remains unknown, but cartilaginous metaplasia of articular and para-articular connective tissue seems to be the primary cause. Patients with these lesions are currently treated with the use of marginal resection or excision.

Intracapsular and Paraarticular Chondroma of the Knee: Case Report

We report here on a case of intracapsular and paraarticular chondroma of the left knee in a patient with a 6-month history of knee pain and swelling. Magnetic resonance image (MRI) revealed a well-defined solid mass with central hemorrhagic necrosis in the infrapatellar area of the knee.

Paraarticular Chondroma of the Knee: A Case Report

Paraarticular chondroma of the knee is a very rare benign tumor that seems to develop from cartilageous metaplasia. This lesion should be differentiated from calcifying soft tissue lesions like tumoral calcinosis, and cartilageous lesions like chondrosarcoma and synovial chondromatosis. We experienced a case of paraarticular chondroma of the knee in an Osgood-Schlatter disease patient.

膝か部に生じた軟骨腫の１例

We report a case of chondroma on the popliteal region. A 37 year-old man presented a soft mass on the popliteal fossa. The mass was located on the left popliteal fossa measuring 6×4×3cm. MRI revealed low intensity on T1 weighted images and high intensity lesion on T2* weighted inages. The tumor was located between the semimembranosus and medial head of gastrocnemius muscles. All specimens showed typical characteristics of chondrocytes and hyaline cartilage.Histopathological diagnosis was Chondroma. After resection of the tumor, whitish tumors the size of a grain of rice were found in the left knee joint. The origin of the tumor was thought to be synovial chondromatosis or paraarticular chondroma.

Synovial osteochondromatosis of the temporomandibular joint: An historical review with presentation of 3 cases

Loose bodies in joints have long held the fascination of surgeons and their recognition clearly enjoys a most distinguished antiquity (Pare, 1558; Haller, 1764; Barwell, 1876; Halstead, 1895) despite the rarity of their occurrence. This paper presents an historical review of the subject in conjunction with a report of three cases operated upon by one of the authors (JdeBN). The results have been critically reviewed by pathologists with a catholicity of experience in the field. The condition is singularly uncommon in the jaw joint, and must rank with synovial cyst and para-articular chondroma as an unusual cause of a swelling of firstly the temporomandibular joint and secondly the parotid gland. Earlier workers recognized the value of comparative pathology to illustrate the nature of a genus of tumours and it is educative to read the following: "A good physiological type for the loose cartilaginous bodies which infest joints is furnished by the temporomandibular joint of the skate. A recess communicating with this articular cavity usually contains a collection of smooth cartilaginous bodies, in contour and size like melon seeds." Bland-Sutton (1907).