Adenocarcinoma of mammary origin in the maxillary gingiva: a case report and brief literature review.

Maxillofacial metastases are rare but represent advanced disease progression and a poor prognosis. The primary purpose of this article is to describe a patient with previously diagnosed and treated invasive ductal breast carcinoma who developed a metastatic lesion in the maxillary gingiva. In addition, this article presents a brief literature review of case reports on metastatic breast cancer manifestations in the gingiva.

Oral and oropharyngeal diffuse large B-cell lymphoma and high-grade B-cell lymphoma: A clinicopathologic and prognostic study of 69 cases.

Objective: The objective of this study was to describe the clinicopathological, molecular, and prognostic features of oral/oropharyngeal diffuse large B-cell lymphoma (DLBCL) and high-grade B-cell lymphoma.

Study Design: All cases were retrieved from 7 Brazilian institutions. Immunohistochemical reactions were performed to confirm the diagnoses and to categorize the tumors.

Benefits of intraoral stents in patients with head and neck cancer undergoing radiotherapy: Systematic review.

Intraoral stents aim to reduce the oral complications associated with head and neck cancers radiotherapy. The aim of this study is to determine the benefits associated with these devices. A systematic review was conducted in PubMed, Web of Science, and Scopus databases selecting full articles published in English, Portuguese, or Spanish until June 6, 2020 (PROSPERO registration: CRD42020185065).

Peripheral giant cell granuloma associated with a dental implant.

Background: Peripheral giant cell granuloma (PGCG) is an uncommon pathology that affects gingival or alveolar mucosa. Although PGCG can be associated with dental implants, little is known about this lesion and implant osseointegration as well as its etiopathogenesis and the treatments available. This study sought to report a rare case of PGCG associated with dental implant, emphasizing its clinical and histopathological aspects.

Diagnosis and treatment of oral lichen sclerosus in a pediatric patient.

Lichen sclerosus is an uncommon chronic inflammatory disease, which rarely affects the oral mucosa. Here, we describe the occurrence of oral lichen sclerosus with gingival destruction in a 12-year-old female patient. After diagnostic confirmation by histopathology, intralesional injection of corticosteroid was performed, producing satisfactory remission of the lesion.

Chondroid Tenosynovial Giant Cell Tumor of the Temporomandibular Joint: A Rare Case Report.

Tenosynovial giant cell tumor of diffuse type (TGCT-d) or pigmented villonodular synovitis (PVNS) is a locally aggressive lesion that mostly affects the joints of long bones. Chondroid tenosynovial giant cell tumor (CTGCT) or PVNS with chondroid metaplasia is a rare distinct subset of synovial tumors that has a predilection for the TMJ. We report a rare case of CTGCT in the TMJ, initially misdiagnosed as temporomandibular disorder (TMD).

Evaluation of KGF, EGF, VEGF, bcl-2, IL-6 and ki67 expression in oral epithelium adjacent to bisphosphonate-related osteonecrosis and florid osseous dysplasia: a comparative immunohistochemical study.

Objective: The aim of this study was to compare the expression of proliferative markers and apoptosis-associated proteins in the oral mucosa adjacent to bone sequestrum associated with osteonecrosis (ON) of the jaws and florid osseous dysplasia (OD).

Study Design: Oral mucosal samples derived from surgical procedures performed for treatment of ON and OD (10 cases each) were retrieved. Histologic analysis was done on hematoxylin and eosin-stained slides; immunohistochemical reactions against epidermal growth factor (EGF), keratinocyte growth factor (KGF), vascular endothelial growth factor (VEGF), Bcl-2 protein, interleukin-6 (IL-6), and Ki-67 antigen were performed with the immunoperoxidase technique.

BPI-fold (BPIF) containing/plunc protein expression in human fetal major and minor salivary glands.

The aim of this study was to determine expression, not previously described, of PLUNC (palate, lung, and nasal epithelium clone) (BPI-fold containing) proteins in major and minor salivary glands from very early fetal tissue to the end of the second trimester and thus gain further insight into the function of these proteins. Early fetal heads, and major and minor salivary glands were collected retrospectively and glands were classified according to morphodifferentiation stage. Expression of BPI-fold containing proteins was localized through immunohistochemistry.

Epithelial-myoepithelial carcinoma of the minor salivary glands: a case report and review of the literature.

Epithelial-myoepithelial carcinoma (EMC) is a rare tumor, especially in the minor salivary glands. This case report describes a 40-year-old man who presented with an EMC on the palate. Histologically, the tumor was characterized by a biphasic structure consisting of duct-lining cuboidal cells in the inner layer and clear myoepithelial cells in the outer layer.

Clinical, demographic, and radiographic analysis of 82 patients affected by florid osseous dysplasia: an international collaborative study.

Objective: The aim of this study was to correlate the clinical, demographic, and radiographic aspects of 82 cases of florid osseous dysplasia (FOD) from four countries assessed by five reviewers.

Study Design: Retrospective data of patients diagnosed with FOD were obtained from archives of five institutes and analyzed according to clinical and radiographic criteria.

Results: A total of 82 cases of FOD were included in the study.

Oral and maxillofacial considerations in Gardner's syndrome: a report of two cases.

Gardner's syndrome (GS) is a genetic disorder characterised by intestinal polyps, multiple osteomas, and soft-tissue tumours. Dentists play an important role in the syndrome diagnosis considering that craniomaxillofacial osteomas are a major criteria for Gardner's syndrome diagnosis. This study aimed to describe the main stomatological manifestation of GS and the importance of dentists in its diagnosis.

Florid osseous dysplasia associated with multiple simple bone cysts: a patient with 22 years of follow-up.

Florid osseous dysplasia (FOD) has been described as a condition that typically affects the jaws of middle-aged women of African descent and usually presents as multiple radiopaque masses distributed throughout the jaws. The diagnosis is generally based on clinical and radiographic presentation, often involving various regions of the jaws without evident bone expansion. This article describes the course of FOD in a 27-year-old African-American woman during 22 years of follow-up, emphasizing the dynamic radiographic characteristics of this entity and unusual co-occurrence with multiple simple bone cysts.

Intraosseous Non-Hodgkin Lymphoma Mimicking a Periapical Lesion.

Non-Hodgkin lymphomas are a group of disorders involving malignant monoclonal proliferation of lymphoid cells, which appear at extranodal sites in approximately 40% of the cases, particularly in the gastrointestinal tract. Intraosseous lymphomas of the head and neck region are extremely rare and can mimic other diseases such as periodontitis or periapical pathologies. This report presents an additional case of intraosseous lymphoma that was previously misdiagnosed as periapical disease.

Autophagy interplays with apoptosis and cell cycle regulation in the growth inhibiting effect of Trisenox in HEP-2, a laryngeal squamous cancer.

Laryngeal squamous cell carcinoma (LSCC) is the most common among several types of head and neck cancers. Current treatments have a poor effect on early and advanced cases, and further investigations for novel agents against LSCCs are desirable. In this study, we elucidate the cytotoxic enhancing effect of arsenic trioxide (As2O3) combined with L-buthionine sulfoximine (BSO) in LSCC.

Survivin and P-glycoprotein are associated and highly expressed in late phase chronic myeloid leukemia.

Resistance to tyrosine-kinase inhibitors is a serious problem in the treatment of chronic myeloid leukemia (CML). Using Western blot, real-time qRT-PCR and flow cytometry, we investigated the expression of survivin, Smac/DIABLO and P-glycoprotein (Pgp) in patients with CML. Survivin overexpression has been associated with cancer progression, multidrug resistance, poor prognosis and short survival in several types of neoplasms including hematological malignancies.

LQB-118, a pterocarpanquinone structurally related to lapachol [2-hydroxy-3-(3-methyl-2-butenyl)-1,4-naphthoquinone]: a novel class of agent with high apoptotic effect in chronic myeloid leukemia cells.

Despite the relevant therapeutic progresses obtained with imatinib, clinical resistance to this drug has emerged and reemerged after cytogenetic remission in a group of patients with chronic myeloid leukemia (CML). Therefore, novel treatment strategies are needed. In this study, we evaluated the anti-CML activity and mechanisms of action of LQB-118, a pterocarpanquinone structurally related to lapachol [2-hydroxy-3-(3-methyl-2-butenyl)-1,4-naphthoquinone].