Juxtacortical Chondroma Research Articles

Juxtacortical Chondroma: A Rare Entity Involving the Phalanges

Periosteal chondroma or juxtacortical chondroma is a rare benign bone tumor of cartilaginous origin. It arises from the periosteum, particularly that of the long tubular bones. We present an interesting case of periosteal chondroma involving the phalanx of the right hand presenting as a palpable mass in a 22-year-old male. The slowly growing mass lesion was investigated in our institute. Characteristic imaging findings on the radiograph and MRI were correlated with histopathological findings to confirm the diagnosis. Establishment of benignity of the lesion guided the surgical management of the patient.

Is This Juxtacortical Chondroma or Chondrosarcoma?: A Case Report

Low grade chondrosarcoma shows similar imaging findings compared with chondroma. We report a case of juxtacortical chondrosarcoma, initially misdiagnosed as a juxtacortical chondroma. Case report and literature review. A 15-years old man was hospitalized to treat a painful mass in the right lower leg. Ultrasonography (US) and MRI were performed to identify the location and characterize the mass. Excisional biopsy was done to confirm the diagnosis. 3 months later, he had recurrent symptom. So, US and MRI were performed again. And initial pathologic slides were retrospectively reviewed. In our case, initial US showed well-marginated, hypoechoic mass with internal septation and echogenic dots in the pretibial area. Initial MRI showed well-marginated, hyperintense lesion on T2WI and hypointense on T1WI with heterogeneous enhancement in the pretibial area. Underlying cortex and bone marrow of the tibia was intact. There was not shown any periosteal reaction. Juxtacortical chondroma was confirmed by excisional biopsy. About 3 months later, MRI showed the large recurrent mass with cortical involvement and focal eccentric intramedullary extension at the pretibial operation area. As compared with previous MRI, it was shown similar signal intensity. US revealed the large hypoechoic mass with internal echogenic dots and cortical irregularity of the proximal tibia. Initial pathologic slides were retrospectively reviewed by pathologist. Thus, the final diagnosis was juxtacortical low grade chondrosarcoma. On this case, radiologist and pathologist initially misdiagnosed as a juxtacortical chondroma. However initial imaging findings were more favorable to juxtacortical chondroma. Therefore, radiologist and pathologist should be careful to distinguish low grade juxtacortical chondrosarcoma from chondroma.

Imaging features of juxtacortical chondroma in children

Juxtacortical chondroma is a rare benign bone lesion in children. Children usually present with a mildly painful mass, which prompts diagnostic imaging studies. The rarity of this condition often presents a diagnostic challenge. Correct diagnosis is crucial in guiding surgical management. To describe the characteristic imaging findings of juxtacortical chondroma in children. We identified all children who were diagnosed with juxtacortical chondroma between 1998 and 2012. A single experienced pediatric radiologist reviewed all diagnostic imaging studies, including plain radiographs, CT, MR and bone scans. Seven children (5 boys and 2 girls) with juxtacortical chondroma were identified, ranging in age from 6years to 16years (mean 12.3years). Mild pain and a palpable mass were present in all seven children. Plain radiographs were available in 6/7, MR in 7/7, CT in 4/7 and skeletal scintigraphy in 5/7 children. Three lesions were located in the proximal humerus, with one each in the distal radius, distal femur, proximal tibia and scapula. Radiographic and CT features deemed highly suggestive of juxtacortical chondroma included cortical scalloping, underlying cortical sclerosis and overhanging margins. MRI features consistent with juxtacortical chondroma included isointensity to skeletal muscle on T1, marked hyperintensity on T2 and peripheral rim enhancement after contrast agent administration. One of seven lesions demonstrated intramedullary extension, and 2/7 showed adjacent soft-tissue edema. Juxtacortical chondroma is an uncommon benign lesion in children with characteristic features on plain radiographs, CT and MR. Recognition of these features is invaluable in guiding appropriate surgical management.

Subungual Exostosis of the Finger with Nail Plate Induction

Subungual exostosis (SE) is a solitary, commonly sessile, bony growth firmly attached to the tuft of the underlying distal phalanx. It is a benign osteocartilaginous tumor arising underneath or beside the nail bed and may disrupt nail growth. Initially described in the hand by Hutchinson in 1857 [8], Dupuytren wrote about his experience with its manifestation in the foot a decade earlier [4]. The differential diagnosis of SE spans many possible nail, soft tissue, and bony pathologies. Onchomycosis, granuloma pyogenicum, epithelioma, verruca, keratoacanthoma [12], fibroma, glomus tumor [11], melanotic whitlow [3], osteochondroma [2], turret exostosis [13], juxtacortical chondroma, and myositis ossificans [1] have all been mentioned as potential diagnoses. The etiology and pathogenesis of SE is not clearly established. It is most commonly thought to reflect a fibrocartilaginous metaplasia from trauma or chronic infection [5, 9]. Although the latter may be a secondary consequence, as SE can elevate the nail causing exposure of the underlying soft tissue. However, others have alluded to genetic etiology [6], supranumery digits, cartilaginous rests, or a forme fruste of hereditary multiple exostoses [10]. SE is seen predominantly in females in a ratio of up to 2:1 [2, 5], though one series documented occurrence more often in males [8]. It occurs primarily in children and young adults in the second or third decades of life and more often affects the great toe, up to 77% of the time [9]. SE is best diagnosed on lateral radiographic view. It is usually seen as a bony projection on the dorsal or dorsomedial aspect of the distal phalanx capped with fibrous tissue. Early lesions may have insufficient bony formation to show up on X-rays [7]. No surrounding destructive changes are seen, supporting this as a benign diagnosis. SE is treated surgically. The nail plate may be removed, and excision is either through the nail bed [11] or via a midlateral incision [2]. Complete resection of the fibrocartilaginous cap is compulsory as local recurrence rates of 11% have been reported [9]. On histology, SE is composed of a mature trabecular pattern of a cancellous bone base with a proliferating fibrocartilaginous cap. The growth, which can reach more than 2 cm in diameter, is always benign. Our case report is the first description of aberrant induced nail plate growth with SE in the literature.

First occurrence of periosteal chondroma (juxtacortical chondroma) inUromastyx maliensis(Reptilia: Sauria: Agamidae)

The occurrence of a periosteal chondroma (juxtacortical chondroma) in an adult male Uromastyx maliensis is documented for the first time. The chondroma developed near the right shoulder joint from the periosteal membrane, causing partial atrophy in the surrounding skeletal muscles. In the chondroma tissues widespread central necrosis and secondary calcium salt deposition were observed. Monomorphic chondrocytes were irregularly spread in the chondromucin matrix. The lizard had locomotor problems due to irritation of the periosteum and reduced movement of the bones constituting the shoulder joint caused by the chondroma.

Juxtacortical Chondroma of the Hand: Treatment by Resection of the Tumour and the Adjacent Bone Cortex

A recurrence of a juxtacortical chondroma of the finger after marginal excision prompted us to review the treatment of this condition. Although the recommended treatment is simple curettage or marginal excision, the reported recurrence rate is significantly higher for lesions in the hand than those in other locations and recurrences only occurred in patients who had local treatments which did not include excision of the adjacent bone cortex. We report five patients with juxtacortical chondroma of the fingers. The first patient underwent marginal excision without resection of the underlying bone cortex. The other four patients underwent intralesional, marginal or wide excisions of tumour with resection of the bone cortex underlying the lesion. Recurrence was only seen in the patient who did not undergo resection of the bone cortex. Resection of the underlying bone cortex after excision of this tumour may be advisable for the treatment of this tumour in the hand to reduce the rate of recurrence.

Osteoma of the Hyoid Bone: Report of a Case

Osteoma of the Hyoid Bone: Report of a Case

Diagnosis of borderline cartilage lesions of bone.

Cartilage lesions of bone are the most difficult ones for the pathologist to classify. The reasons for this are discussed. The borderline cartilage lesions include osteochondroma, enchondroma, chondrosarcoma, chondroblastoma, chondromyxoid fibroma, juxtacortical chondroma and chondrosarcoma, clear cell chondrosarcoma, and the peripheral chondrosarcoma. Specific differential points are provided with illustrative material and a summary table in order to ease the pathologist's task.

A Case Report of Juxtacortical Chondroma (Jaffe) in the Digital Bone

Juxtacortical chondroma is an uncommon benign cartilaginous tumor that arises under or in the periosteum on the surface of the cortical bone. The term “Juxtacortical Chondroma” was coined by Jaffe in 1956. Recently we have exprienced a 10-year-old male with juxtacortical chondroma in the fourth proximal phalanx. In addition, this case had an enchondroma in the same phalanx. This time, we reported this case and gave consideration to the clinical and pathological findings of this case.

Periosteal chondroma

The periosteal chondroma (juxtacortical chondroma) is an unusual tumor which usually occurs on the surface of tubular bones in the metaphyseal area. In this study, we reviewed the clinicopathologic features of 22 patients representing 23 instances of periosteal chondroma and discuss the radiologic and histologic features necessary for accurate diagnosis. The characteristic radiologic appearance is of a single cartilaginous mass in the metaphyseal periosteum causing well-defined depression or "saucerization" of the adjacent cortex. The radiologic differential diagnoses include soft-tissue tumors compressing bone, fibrous cortical defect, and periosteal chondrosarcoma or osteosarcoma. Histologic features include lobules of hyaline cartilage with frequent areas of hypercellularity, binucleate chondrocytes, and focal mild cytologic atypia. The histologic features clearly identify the tumor as chondrogenic; however, familiarity with the x-rays may be necessary to recognize the tumor as benign.

A Case of Juxtacortical Chondroma

A case of Juxtacortical Chondroma was reported.A nineteen-year-old man had a mass on the left leg for 4 months prior to admission. On the medial side of the proxmal half of the left tibia, an elastic-hard extraosseous cartilaginous mass (6×4×1.5cm.) was detected.Roentgenogram showed a calcified soft-tissue and a shallow depression in the cortex of the tibia.A block rescetion of the tumor was performed.Histpathologically the specimens were composed of lobulated, focally calcified lying within a fibrous capsule. Nuclear variation and atypism were not prominent. One month after the first surgery the mass recurred and eight months later a block resection of the tumor was perfermed again.

A Case Report of Juxtacortical Chondroma of the Lumbar Spine in a Child

A 14 year-old boy visited us complaing of the low back pain.The diagnosis of juxtacortical chondroma of the fouth lumbar spine mas made based on the histological examination and roentogenograms. Histological examination of the specimen showed atypical chondroma.

Juxtacortical chondroma of the hyoid bone. Report of a case.

THE purpose of this article is to add to the literature an instance of a chondroma appearing in an unusual location. Report of a Case A 32-year-old white woman who first noted an asymptomatic swelling in the right submandibular area one year ago. This was not associated with a concurrent upper respiratory infection, trauma, or any inflammatory process about the head or neck. She continued to watch this mass grow until it became noticeable to her family, and at their insistence she visited her attending physician. Physical examination at that time revealed a large nontender firm mass which occupied the right submandibular area. There was no evidence of inflammation, no abnormal lymph nodes were palpable. Examination of the oropharynx revealed the right tonsillar area to be displaced medially almost to the midline by an underlying mass. This mass was contiguous with that in the submandibular area and could be balloted