Periosteal chondroma of the cuboid with secondary aneurysmal bone cyst in a setting of secondary hyperparathyroidism.

We report the case of a 35-year-old woman with painful, nontender mass at the right lateral hindfoot. Computed tomography (CT) and magnetic resonance imaging (MRI) indicated the suspect of a chondroid tumour in the cuboid. The tumour was resected en bloc and histology revealed the presence of a periosteal (juxtacortical) chondroma with secondary aneurysmal bone cyst. Secondary hyperparathyroidism was detected in laboratory tests and put into context with the histopathologic findings. In conclusion, a rare case of periosteal chondroma of the cuboid with secondary aneurysmal bone cyst in a setting of secondary hyperparathyroidism due to vitamin D deficiency is presented. LEVEL OF CLINICAL EVIDENCE: 4.

Laryngeal Chondroma: An Unusual Complication Endotracheal Entubation.

INTRODUCTION: Laryngeal cartilaginous framework tumors are very rare. Chondroma and chondrosarcoma are the most common types of these tumors. PATIENT PRESENTATION: A 27-year-old man with a history of intubation presented with exercise-induced dyspnea. A computed tomography scan of larynx showed a rounded and circumscribed mass without infiltration of the adjacent structures which obstructs 75% of airway. Histopathological investigation of the mass revealed the chondroma of the larynx. The patients' history of intubation trauma with the subsequent progressive onset of clinical symptoms demonstrates the relationship between these 2 entities. CONCLUSION: Clinicians should consider laryngeal chondroma in the differential diagnosis of dyspnea after endotracheal intubation.

A case of bilateral multiple pulmonary chondroma: necessity of follow-up for Carney's triad.

We report a case of pulmonary bilateral multiple chondromas that were possibly an initial clinical presentation of Carney's triad. A 56-year-old Japanese non-smoking asymptomatic woman was admitted to the hospital for further examination of small, multiple, bilateral nodules in the lungs. Although chest radiological findings suggested that the nodules were possibly metastatic pulmonary tumors, the malignant origin was not detected. During diagnostic video-assisted thoracic surgery, wedge resections including the nodules were performed. Since pathological examination showed nodules were surrounded by fibrous and eosinophilic stroma, we diagnose the nodules as chondromas. These chondromas were possibly components of Carney's triad, because each nodule had a thin fibrous pseudocapsule and did not have an entrapped epithelium and fat. Some patients die of Carney's triad because of malignant alteration of lesions. Therefore, the patients with Carney's triad should be taken a medical check periodically. This patient was scheduled to undergo the check-up for several years.

Association between previous meniscal surgery and the incidence of chondral lesions at revision anterior cruciate ligament reconstruction.

BACKGROUND: Knees undergoing revision anterior cruciate ligament (ACL) reconstruction typically have more intra-articular injuries than do knees undergoing primary reconstruction. HYPOTHESIS: Previous partial meniscectomy (PM) is associated with a higher rate of chondral lesions at revision ACL reconstruction, whereas previous meniscal repair (MR) is not associated with a higher rate of chondral lesions at revision ACL reconstruction, compared with knees undergoing revision ACL with no previous meniscal surgery. STUDY DESIGN: Cohort study (Prevalence); Level of evidence, 2. METHODS: Data from a multicenter cohort was reviewed to determine the history of prior meniscal surgery (PM/MR) and the presence of grade II/III/IV chondral lesions at revision ACL reconstruction. The association between previous meniscal surgery and the incidence of chondral lesions was examined. Patient age was included as a covariate to determine if surgery type contributes predictive information independent of patient age. RESULTS: The cohort included 725 ACL revision surgeries. Chondrosis was associated with patient age (P < .0001) and previous meniscal surgery (P < .0001). After adjusting for patient age, knees with previous PM were more likely to have chondrosis than knees with previous MR (P = .003) or no previous meniscal surgery (P < .0001). There was no difference between knees without previous meniscal surgery and knees with previous MR (P = .7). Previous partial meniscectomy was associated with a higher rate of chondrosis in the same compartment compared with knees without previous meniscal surgery (P < .0001) and knees with previous MR (P ≤ .03). CONCLUSION: The status of articular cartilage at the time of revision ACL reconstruction relates to previous meniscal surgery independent of the effect of patient age. Previous partial meniscectomy is associated with a higher incidence of articular cartilage lesions, whereas previous meniscal repair is not. Although this association may reflect underlying differences in the knee at the time of prior surgery, it does suggest that meniscal repair is preferable when possible at the time of ACL reconstruction.

Otolaryngologic manifestations of Maffucci's syndrome.

Maffucci's syndrome is an uncommon congenital disease marked by multiple vascular malformations and enchondromas throughout the body. Otolaryngologic manifestations are relatively rare but potentially can cause symptoms such as respiratory distress and dysphagia if the lesions appear in the upper aerodigestive tract or larynx. We report a case of a young woman who demonstrated a wide range of head and neck pathology associated with this unique disease, including sphenoid enchondroma, bilateral petrous apex lesions, and rarely reported laryngeal and hypopharyngeal vascular malformations, over a period of nearly 20 years.

Delayed occurrence of intracranial supratentorial chondroma following compound depressed skull fracture.

We describe an exceptional case of a frontal convexity chondroma arising at the site of a compound depressed skull fracture operated on 12 years earlier. We conclude that intracranial chondroma should be included in the differential diagnosis of a calcified mass for the patients who had had a compound, depressed skull fracture along the suture line, especially in cases of dural laceration by the fragmented bone.

[Chondroma of the lumbar spinal canal: a case report].

Chondroma is a benign cartilaginous tumor and fairly rare in the spine. A case of chondroma in the lumbar spine is presented. A male at age 66 was suffered from progressive low back pain associated with hypesthesia in his right leg. Radiographic examination showed an extradural mass in the dorsal part of spinal canal at L 5 level. No osteolytic change was noted by CT scan. MRI showed iso-intensity with marginal enhancement on T 1-weighted images and heterogeneous intensity on T 2-weighted image. The mass was totally removed by laminectomy and pathohistologically diagnosed as chondroma. Postoperative course was uneventful and the symptoms disappeared completely. One of the origin of chondroma is thought to be metaplasia of the connective tissue in contact with spine. This is why no pathological change was found in bone adjacent to the tumor. Careful preoperative diagnosis and total removal of the tumor is important since malignant transformation may happen in chondroma.

Benign and malignant cartilage tumors of bone and joint: their anatomic and theoretical basis with an emphasis on radiology, pathology and clinical biology. I. The intramedullary cartilage tumors.

We reviewed 845 cases of benign and 356 cases of malignant cartilaginous tumors from a total of 3067 primary bone tumors in our database. Benign cartilaginous lesions are unique because the epiphyseal plate has been implicated in the etiology of osteochondroma, enchondroma (single or multiple), periosteal chondromas and chondroblastoma. In the first part of this paper, we will review important clinical, radiologic and histologic features of intramedullary cartilaginous lesions in an attempt to support theories related to anatomic considerations and pathogenesis.

Condromalacia patelar. Correlación clínico-artroscópica de un nuevo signo clínico / Patellar chondromalatia. Clinical-arthroscopical correlation of a new sign

Se elaboro el presente trabajo, prospectivo longitudinal, tomando 200 artroscopias efectuadas en el servicio, con el diagnóstico clínico preoperatorio de condromalacia patelar. A todos los pacientes se les realizó anamnesis dirigida así como exploración física que incluyó la búsqueda de los signos clásicos: palpación de facetas rotulianas, cepillo rotuliano y escape rotuliano, además, se realizó la maniobra de Carriedo, variante del escape rotuliano. Al establecer la correlación clínico-artroscópica se encontró que los signos clásicos sólo son confiables en cuanto al diagnóstico y no así en cuanto a la clasificación del grado de lesión. El signo de Carreido, en forma opuesta, mostró una alta confiabilidad para fines diagnósticos y sobre todo, para determinar el grado de lesión particularmente en las condromalacias grados III y IV. Lo anterior es de relevante importancia debido al elevado número de pacientes sin condromalacia o con ella en grados I y II a quienes se les efectúa una intervención artroscópica cuando, preferentemente, deberían ser manejados en forma conservadora. Se propone que en los servicios de ortopedia sea investigado este nuevo signo en forma sistemática en los pacientes en quienes se sospecha condromalacia patelar

Giant chondroma of the falx. Case report and review of the literature.

The authors describe the radiological and pathological features in a patient with an intracranial chondroma originating in the falx cerebri. Diagnostic procedures and management in treatment are discussed, and a review of the literature is presented.

[Post-traumatic subperiosteal chondroma of the hand. Clinical case]. / Condroma sottoperiosteo post-traumatico della mano. Caso clinico.

The authors report a case of rapidly developing periosteal chondroma of the fifth metacarpal. No erosion of the bone cortex could be observed radiographically. The development of the tumor appears to follow a violent trauma without skeletal lesions occurred seven months before.

Skull base chondroma of extracranial origin.

METHODS: Two cases of chondroma at the skull base, most probably of extracranial origin, are presented: one at the apex of the petrous pyramid and the other in the infratemporal fossa. RESULTS: In the second case, the surgical findings suggested that the tumor originated in the cartilagineous part of the eustachian tube. The world literature was reviewed and only three cases of extracranial chondromas at the skull base, and ten cases of chondromas of the nasopharynx have been described so far. CONCLUSIONS: The potential origins of chondromas at the skull base are discussed: Cartilagineous remnants at the basisphenoid and basiocciput or the cartilagineous part of the eustachian tube seem to be the most probable origin.

Deposition of calcium pyrophosphate dihydrate crystals in a soft tissue chondroma.

Calcium pyrophosphate dihydrate (CPPD) crystal deposits were found in an extraarticular chondroma of the soft parts overlying the distal phalanx of the right middle finger. The lesion appeared to arise from the flexor tenosynovium. The pathogenesis of soft tissue chondroma and the relation of cartilage metaplasia to the process of CPPD crystal deposition were investigated.

Chondroma of the tongue. Report of a case and a consideration of the histogenesis of such lesions.

Chondroma of the tongue is a very rare condition. We describe a case that demonstrates unusual features in terms of its location in the tongue and the presence of noncartilaginous elements. Of the various hypotheses concerning the pathogenesis of lingual chondromas, it seems most likely that they are truly neoplasms (or hamartomas) of mesenchymal tissue that manifest metaplastic features.