Leimyosarcoma of the buccal mucosa and review of literature

A Rare Case of Leiomyosarcoma Next to the Iliac Crest

Leiomyosarcoma is an aggressive soft tissue cancer frequently seen in the female gastrointestinal and genital tracts due to the preponderance of smooth muscle. We report the case of a patient with leiomyosarcoma next to the iliac crest, discussing this rare location with data from the literature.

Maxillary Leiomyosarcoma with Lymph Node Metastasis: Report of an Unusual Case

Leiomyosarcoma is an unusual, malignant, mesenchymal neoplasm that is extremely rare in head and neck region. It clinically presents as a well-defined, painless mass which could easily be misdiagnosed as a benign lesion, posing a diagnostic challenge to the clinician. Head and neck leiomyosarcomas are very aggressive and have a poor prognosis. Hence, early diagnosis plays a vital role in its appropriate management.

Invasive leiomyosarcoma involving the tongue of an Arabian mare

A 10 year-old endurance Arabian mare was presented with an invasive, firm, multilobulated mass at the left ventral face of the tongue. The mare had a history of four months of ptyalism, dysphagia, severe halitosis, and dysmastication. The Evaluation of the horse included physical and oral examination, complete blood count and serum biochemistry profile, computed tomography evaluation of the head, and histopathology of the mass. The computerized tomography (CT) head scan showed the homogeneous mass in the oral cavity confirming the degree of invasion on the tongue, as well as a small mineral focus at the left dorsal mandibular border and increased density of the submandibular lymph nodes. At necropsy, gross findings in the oral cavity revealed an irregular, nodular and partially ulcerated mass at the level of the body of the tongue in the ventral aspect, with a size of approximately 10 × 15 × 8 cm. Histologically, the tongue revealed a neoplastic process of mesenchymal muscle origin. The tumor cells showed distinctive morphological and architectural patterns in some areas. An immunohistochemistry panel was done yielding a positive reaction for Calponin and Desmin, confirming diagnostics of as a soft tissue leiomyosarcoma in the tongue. Immunohistochemistry results, in combination with histopathologic morphology, were suggestive of a leiomyosarcoma originating in the perivascular wall tissue. Oral leiomyosarcoma are very rare in veterinary medicine, and to the authors' knowledge, this is the first case report to utilize histopathology, immunohistochemistry and imaginology to describe oral leiomyosarcoma in a horse.

A recurrent leiomyosarcoma of the buccal mucosa: An immunohistochemistry study and literature review

Leiomyosarcoma is a rare type of cancer that affects smooth muscle tissue. Leiomyosarcomas are exceedingly rare in the oral cavity, particularly in the buccal mucosa. The diagnosis is challenging due to non-specific clinical features and significant overlap of morphological findings with several spindle cell tumors. We reported the clinicopathological and immunohistochemical features of a rare recurrent case of leiomyosarcoma in a 73-year-old female presenting clinically as a painful nodule on the posterior right buccal mucosa. Microscopically, the lesion showed atypical spindle cells arranged in a fascicular pattern and frequent mitotic figures. Immunohistochemistry showed strong positivity for vimentin, α-SMA, HHF35, h-caldesmon, and focal positivity for desmin. CD34 highlighted numerous blood vessels distributed throughout all tumor stroma. S-100 protein, myogenin, and pan-cytokeratin (AE1/AE3) were negative. Surgical excision followed by chemotherapy was carried out, and no recurrence was observed after 1 year of follow-up. Careful histopathological and immunohistochemistry analysis of these lesions is essential to ensure a correct diagnosis. Early surgical excision with tumor-free margins and prolonged follow-up is strongly recommended.

Primary oral leiomyosarcoma: A systematic review and update

The aim of this systematic review was to address the clinicopathologic inconsistencies noted with primary oral leiomyosarcoma in the literature by amassing the available data published into a comprehensive analysis. Eligibility criteria included publications of cases with dedicated immunohistochemical work-up along with radiographs to evaluate location. Based on these criteria, the systematic review compiled 29 cases. Four primary location sites were identified in the reported cases: soft tissue presentation only, soft tissue with bony involvement, bony involvement only, and bony involvement with a soft tissue component. The majority of primary oral leiomyosarcoma cases reviewed showed a soft tissue predilection, which is in contrast to prior reports of jawbones being the most common site. In addition, there was an improved 5-year survival rate for primary oral leiomyosarcoma limited to the oral cavity and gnathic bones without extension into paranasal sinuses.

Primary Leiomyosarcoma of the Buccal Mucosa: Report of a Case and Review of the Literature

This clinicopathologic study of primary oral leiomyosarcoma of the buccal mucosa involves a literature review of 15 cases with the addition of our report of a case. The demographic details, tumor size, treatment and outcome are documented for all the cases. In addition, this review examines the histologic features of leiomyosarcoma while noting that differentiation from other spindle cell tumors can be challenging, underscoring the necessity of an immunohistochemical work up for an accurate diagnosis. The unpredictability of the clinical behavior of these aggressive tumors requires, at the very least, wide local surgical excision and prolonged follow up.

Primary leiomyosarcoma in the floor of mouth: a case report

Leiomyosarcoma (LMS) is a malignant soft tissue tumor that exhibits smooth muscle differentiation, and its occurrence in the oral cavity is exceedingly rare, especially in the floor of mouth. A 54-year-old male was admitted for evaluation of a painless nodular mass in the left floor of mouth with a 3-month history. With the help of computed tomography (CT) and magnetic resonance imaging (MRI) examination, the patient went on a surgery excision, and by pathological and immunohistochemical findings, a diagnoses of LMS was confirmed. Then the patient went on chemotherapy, and six-month follow up showed no recurrence of cancer. The diagnosis of LMS is difficult to be made, and it is usually confirmed by immunohistochemical stains, such as positive for smooth muscle actin (SMA), vimentin, and Ki-67.