Carcinoma epidermoide de seno maxilar: a propósito de un caso / Squamous cell carcinoma of the maxillary sinus: a case report

RESUMEN Fundamento: el carcinoma epidermoide de seno maxilar es de poca frecuencia, capaz de provocar compromiso estético-funcional por lo que su diagnóstico temprano permitirá al paciente un mejor pronóstico. Objetivo: exponer aspectos clínicos del carcinoma epidermoide de seno maxilar. Caso clínico: paciente masculino de raza blanca, 64 años de edad, con aumento de volumen en región orbito-cigomática izquierda de un mes de evolución. La tomografía axial computarizada de senos paranasales reveló imagen heterogénea sugestiva de tumor de seno maxilar del lado izquierdo. El diagnóstico histopatológico reportado fue de carcinoma epidermoide bien diferenciado. Se instauró el tratamiento con quimioterapia y radioterapia concurrente. El motivo de mostrar este caso consiste en aportar experiencias que permitan el diagnóstico temprano de la enfermedad y así mejorar el pronóstico para el paciente. Conclusiones: un examen clínico minucioso conducirá a un diagnóstico precoz de estas enfermedades que presentan una evolución tórpida y carecen de signos patognomónicos sobre todo en sus estadios iniciales. Es de vital importancia el papel protagónico que tiene la Atención Primaria de Salud para la detección del cáncer el cual constituye una de las primeras causas de muerte en Cuba.

ABSTRACT Background: squamous cell carcinomas of maxillary sinus are rare. It causes esthetic-functional compromise. Therefore, its early diagnosis will allow the patient better prognosis. Objective: to expose clinical aspects of squamous cell carcinoma in maxillary sinus. Case report: a clinical case is reported from 64-year-old white male patient with swelling over the orbit-zygomatic area that progressed over 1 month. The paranasal sinus CAT scan showed a heterogenic image suggesting a left maxillary tumor. The histopathological diagnosis reported a well- differentiated squamous cell carcinoma. Chemotherapy and radiotherapy can be used in this case. The scope of showing this case is to provide some aspects that allow the early diagnosis of the aforementioned disease as well as to improve the patients' prognosis. Conclusions: the deep clinical examination in patients will allow a soon diagnosis of these pathologies that present a torpid evolution lacking pathognomonic signs mainly in first stages. It is of paramount importance the role of the Primary Health Service in the early detection of cancer, which constitutes one of the main causes of death in Cuba.

Expression of Ezrin and phos-ezrin in skin squamous carcinomas and its clinical significance / 中国医师杂志

Objective To investigate the expressions of Ezrin and phos-ezrin in squamous cell carcinomas (SCC),and to an alyze their clinic significance.Methods Immunohistochemistry was used to detect the expressions of Ezrin and phos-Ezrin in 20 cases of normal skin,31 cases of seborrheic Keratosis (SK),36 cases of basal cell carcinoma (BCC),and 37 cases of SCC.Results (1) The positive rates of Ezrin in normal skin (NS),SK,BCC,and SCC were 20.0％,25.8％,66.7％,and 89.2％,respectively.The positive reates of phos-Ezrin in NS,SK,BCC,and SCC were 10.0 ％,22.6％,77.8％,and 94.6％,respectively.Ezrin and phos ezrin in cancers were higher than that in noncancer tissues (P ＜ 0.01).(2) The expressions of Ezrin,and phos-Ezrin were closely correlated with the cutaneous tumor's type(R1 =0.87,r1 =0.89,P ＜ 0.01),malignant degree (patho-grading of SCC) (R2 =0.80,r2=0.86,P ＜ 0.01),metastasis via lymph node (R3 =0.89,r3 =0.91,P ＜ 0.01).Conclusions Ezrin and phos-Ezrin expressions were closely related to the types of tumor,malignant degrees,and metastasis.The combined-detection of Ezrin and phos-ezrin would provide a novel clue to predicting metastasis and prognosis of cutaneous tumor.

Expression and its significance of protein kinase CK2α in human thyroid carcinoma SW579 cells / 中国医师杂志

Objective To investigate the expression of protein kinase CK2α in thyroid carcinoma SW579 cells and its significance.Methods SW579 cells and Hacat cells were cultured in vitro and the expression levels of protein kinase CK2α mRNA and protein in SW579 cells and Hacat cells were measured by reverse transcription-polymerase chain reaction (RT-PCR) and Western blotting.Moreover,CK2 activity was also measured.Results It was showed that the mRNA (0.92 ±0.01 vs 0.52 ±0.02,t =19.24,P ＜0.01)and protein(0.98 ±0.01 vs 0.37 ±0.02,t =24.14,P ＜0.01) expression of protein kinase CK2αwere significantly stronger in SW579 cells relative to Hacat cells.Conclusions Formation and development of thyroid carcinoma may be in connection with the overexpression of protein kinase CK2α.