Extraskeletal chondroma of the masseter muscle: a case report with review of the literature

Falleti, Jessica; Cecio, Rossella De; Mentone, A.; Lamberti, V.; Friscia, Marco; Biasi, S. De; Califano, Luigi; Insabato, Luigi

doi:10.1016/j.ijom.2009.02.020

Cited by 19 publications

(12 citation statements)

References 36 publications

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“…Less common locations include the chest and abdominal wall, lung, fallopian tube, and other visceral organs. In the head and neck, extraskeletal chondromas are most prevalent in the tongue [3, 4] and rare in the cheek [6, 7], parotid gland [8, 9], neck [10], masticatory space [11], parapharyngeal space [12], and masseter muscle [13]. Our literature survey found only one previous account of a chondroma in the preauricular region [5].…”

Section: Discussionmentioning

confidence: 99%

Extraskeletal Chondroma of the Preauricular Region: A Case Report and Literature Review

Watanabe¹,

Saiki²,

Ochochi³

2012

Case Reports in Medicine

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An extraskeletal chondroma is a rare benign cartilaginous tumor that develops in soft tissue. Histologically, it is a lobulated nodule surrounded by a fibrous capsule; the inside consists of mature hyaline cartilage containing a few normal chondrocytes. We present a rare case of extraskeletal chondroma in the preauricular region. A 43-year-old man presented with a 2-cm-diameter right preauricular tumor that had been developing for 1 year. Magnetic resonance imaging showed a solid lobulated tumor in the right preauricular region, which was proximate to the capsule of the right temporomandibular joint (TMJ). This was subsequently resected under general anesthesia. The tumor was not in contact with the TMJ capsule and had not invaded the surrounding tissue, facilitating en bloc excision. Histopathologically, the tumor comprised mainly of hyaline cartilage containing chondrocytes with chondrocytic lacunae and was diagnosed as a chondroma. The postoperative period was uneventful, and there was no evidence of recurrence at the 2-year followup. We describe the clinical characteristics of our case and review the literature, emphasizing the differential diagnosis.

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Section: Discussionmentioning

confidence: 99%

Extraskeletal Chondroma of the Preauricular Region: A Case Report and Literature Review

Watanabe¹,

Saiki²,

Ochochi³

2012

Case Reports in Medicine

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“…This tumor typically arises in the extremities but rarely is found in the neck, tongue, auricle, cheek, parotid gland, parapharyngeal space, and masticator space (81)(82)(83). It is thought that soft tissue chondroma develops from embryonal remnants ance with low to intermediate signal intensity on T1-weighted images, high signal intensity on T2-weighted images, and peripheral or septal contrast enhancement.…”

Section: Soft Tissue Chondromamentioning

confidence: 99%

Soft Tissue Tumors of the Head and Neck: Imaging-based Review of the WHO Classification

Razek

Huang²

2011

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The World Health Organization (WHO) system for defining and classifying soft tissue tumors is usually applied to lesions that occur in the trunk and extremities, but it also provides an excellent framework for characterizing nonepithelial extraskeletal tumors of the head and neck. Although nonepithelial extraskeletal tumors are in the minority among head and neck lesions, they are by no means rare. The WHO classification system recognizes nine major types based on histologic differentiation: adipocytic, fibroblastic or myofibroblastic, fibrohistiocytic, smooth muscle, skeletal muscle, vascular, pericytic, and chondro-osseous tumors, as well as soft tissue tumors of uncertain differentiation. Tumors of each histologic type may be further subclassified on the basis of their biologic behavior as benign, intermediate (ie, having malignant potential), or malignant. Imaging plays an important role in the noninvasive diagnosis and characterization of nonepithelial soft tissue tumors of the head and neck, providing clues about tumor grade, composition, extent, and involvement of adjacent structures. Although the imaging characteristics of many such tumors are nonspecific, consideration of the clinical history in concert with the imaging findings may help limit the differential diagnosis or even allow reliable diagnosis of some of these tumors.

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“…In the head and neck, they are most prevalent in the tongue, cheeks, parotid gland, neck, masticatory space, parapharyngeal space, and masseter muscle, as well as in the preauricular region. 2,8,[13][14][15][16][17][18][19][20][21][22] In the preauricular region, we found only six cases in the literature, 2 including this report. The six cases of soft-tissue chondroma, including ours, included two in the parotid gland, three in the preauricular region, and one in the masseter muscle.…”

Section: Discussionmentioning

confidence: 99%

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

Bocchialini

Castellani

Bozzola

et al. 2018

Craniomaxillofacial Trauma & Reconstruction

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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.

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Extraskeletal chondroma of the masseter muscle: a case report with review of the literature

Cited by 19 publications

References 36 publications

Extraskeletal Chondroma of the Preauricular Region: A Case Report and Literature Review

Extraskeletal Chondroma of the Preauricular Region: A Case Report and Literature Review

Soft Tissue Tumors of the Head and Neck: Imaging-based Review of the WHO Classification

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

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