Lingual metastasis as the first presentation of clear cell renal cell carcinoma: Report of a rare case clinically mimicking a benign lesion.

Metastases in the oral cavity are rare and frequently associated with widespread disease and poor prognosis. Clear cell renal cell carcinoma (ccRCC) is the most common subtype of renal cell carcinoma (RCC), known for its propensity for metastatic spread. The diagnosis of oral metastases from ccRCC is challenging, especially when the patient has no history of primary neoplasm. Herein, we reported a rare metastatic ccRCC in a 58-year-old female presenting clinically as a painless nodule on the tongue mimicking a benign lesion. Microscopically, the tumor showed a proliferation of clear cells organized in nests with a predominantly lobular arrangement. The dense connective tissue stroma was highly vascularized, exhibiting some areas with a hyalinized aspect. Immunohistochemistry showed focal positivity for pan-cytokeratin AE1/AE3 and strong positivity for CK8, CK18, epithelial membrane antigen (EMA), vimentin, and CD10. S-100 protein, HMB-45, CK7, and CK20 were negative. The definitive diagnosis was metastatic ccRCC. The treatment was initiated with sunitinib. However, the disease progressed, and the patient was submitted to palliative care. Despite the low survival rate of patients with metastases, the clinician's experience in identifying an oral metastatic lesion may reveal undiagnosed primary tumors and provide better prognosis and survival rates.

Sífilis: aspectos clínicos, transmissão, manifestações orais, diagnóstico e tratamento / Syphilis: clinical aspects, transmission, oral manifestations, diagnosis and treatment

A sífilis é uma doença que pode ser transmitida de diversas maneiras, mas as mais frequentes são por contato sexual desprotegido ou verticalmente pela mãe contaminada para o seu feto. Todas as suas fases podem apresentar manifestações orais, sendo uma doença de grande importância para o cirurgião-dentista, visto que essas manifestações são de atribuição diagnóstica e podem ser confundidas com outras enfermidades. Quanto mais rápido o diagnóstico, seja pelo cirurgião-dentista ou pelo médico, melhor é o prognóstico do paciente. As alterações mais frequentemente observadas em boca são o cancro duro, as placas mucosas e as gomas, além dos incisivos de Hutchinson e molares em amora no caso de sífilis congênita. O melhor fármaco disponível hoje para o tratamento da sífilis é a penicilina benzatina, sendo as suas doses e intervalos definidos pela fase em que se encontra o paciente. A prevenção da doença e o controle do paciente devem ser feitos com aconselhamento sobre práticas sexuais seguras, e o profissional de saúde que for examiná-lo deve estar atento às normas de biossegurança, pois as lesões das primeiras fases são altamente contagiosas. Uma atenção especial tem que ser dada às gestantes, visto que pode ocorrer a transmissão vertical da doença, a é totalmente passível de tratamento. A sífilis é uma doença curável, e por isso, é dever dos profissionais de saúde conhecerem suas manifestações, como fazer seu diagnóstico e como deve ser o tratamento adequado.(AU)

Syphilis is a disease that can be transmitted in several ways, but the most common are by unprotected sex or vertical transmission from infected mother to her fetus. All the disease stages present oral manifestations, which characterizes it as being of a great relevance to a dentist, since the disease are manifested in oral cavity the dentist is able to give an early diagnosis, but it can be confused with other illnesses. The quicker the diagnosis made either by a dentist or a physician, the better the prognosis. The most frequently observed oral alterations are: chancre, mucous plaques, and gummas; in congenital syphilis cases Hutchinson and Mulberry's molar have been reported as signs of this disease. Benzathine penicillin is the best available drug for syphilis' treatment nowadays, and the drug posology is defined by the patient's disease stage of evolution. The prevention and control of the disease are made through counseling regard safe sex habits and the professional treating an infected patient should be aware of biosecurity protocols, especially if this patient is on the first stages of the disease, which are the most contagious. Furthermore, special attention should to be given to pregnant women due to the fact of vertical transmission of the disease to the fetus, although the disease's transmission can be treated in this case. Therefore, syphilis is a curable disease, and health professionals's responsibility to know the disease's manifestations, how to make its diagnosis, and how the treatment should be approached.(AU)