A case of lingual chondroma

Chondroma Arising from the Temporomandibular Joint: A Case Report

Periarticular chondromas are common in the humerus and femur but rarely occur in the temporomandibular joint. We report a case of a chondroma in the anterior part of the ear. One year prior to his visit, a 53-year-old man became aware of swelling in the right cheek region which gradually increased in size. In the anterior part of the right ear, there was a palpable 25 mm tumor, elastic and hard, with poor mobility and without tenderness. A contrast-enhanced computed tomography CT showed a mass lesion with diffuse calcification or ossification in the upper pole of the parotid gland and areas of poor contrast within. A magnetic resonance imaging showed a low-signal mass lesion at the parotid gland with some high signals in both T1 and T2. Fine-needle aspiration cytology did not lead to diagnosis. Using a nerve monitoring system, the tumor was resected with normal tissue of the upper pole of the parotid gland in the same way as for a benign parotid tumor. Distinguishing between pleomorphic adenoma, including diffuse microcalcification of the parotid gland and cartilaginous tumors of the temporomandibular joint, may be sometimes difficult. In such cases, surgical resection may be a beneficial treatment option.

Soft-Tissue Chondroma in the Preauricular Region: An Unusual Presentation

Chondroma is a benign cartilaginous tumor composed of mature hyaline cartilage and represents only 2.38% of all osteocartilaginous tumors; cases that arise in the preauricular region are rarely found in the literature. This article presents an 80-year-old man with preauricular swelling on the right side and pain with no limitation of joint motion. This patient was evaluated by preoperative clinical manifestation, fine needle aspiration, ultrasound, and magnetic resonance imaging (MRI) scans. The MRI shows a solid lobulated lesion between the masseter muscle and the parotid gland whereas fine-needle aspiration did not provide a diagnosis. Based on these images and the patient's indications and symptoms, a surgical intervention was performed. It is possible to identify three different types of chondromas in the parotid region based on their location. Among the cases of chondroma in the literature, only six originating in the soft tissue of the parotid region have been reported, including this one.

True chondroma of the mandibular condyle: A rare case

Chondroma of the mandibular condyle is a rare benign tumor, with just a handful of cases reported in the literature. Chondromas are rare in the maxillofacial region, but are quite common in the bones of the hands and feet. So far only eight cases of true chondroma have been reported. Here, we present a case of true chondroma of the mandibular condyle of the right side, for which condylectomy was done. No signs of recurrence are noted at 2 years follow-up.

Massive cardiac chondroma presenting with heart failure and superior vena cava obstruction in a teenage boy

Histologically benign soft-tissue chondromas have been reported at many anatomical sites but are an uncommon cause of soft tissue mass lesions in childhood, accounting for less than 1% of cases. The most frequent sites for extraosseous soft-tissue chondromas are the hands and feet. For the extremely rare visceral chondromas, the site can be lung, where they may represent a component of Carney's syndrome of extra-adrenal paraganglioma, pulmonary chondroma, and epithelioid leiomyosarcoma of the gastrointestinal tract. Primary cardiac chondromas are exceptionally rare in patients of any age although cardiac chondrosarcoma, both primary and metastatic, is well reported. We present a case of a teenage boy with a fatal cardiac chondroma