ABSTRACT
Primary lung tumors mimicking the salivary gland-type neoplasms are extremely rare. These types of tumors originate from submucosal bronchial glands. Epithelial-myoepithelial carcinoma is an uncommon tumor in this group, and only 7 cases have been reported. It is considered to be a low-grade malignant neoplasm. We report a case of epithelial-myoepithelial carcinoma of bronchial gland origin in a 73-year-old man who presented with coughing and dyspnea. The bronchus of the left lower lobe contained a tumor mass that had a polypoid growth pattern. The tumor also extended into the pulmonary parenchyma, forming a well-circumscribed mass with a pushing margin. The tumor consisted of epithelial and myoepithelial cells. The epithelial cells were positive for cytokeratins and epithelial membrane antigen, while the myoepithelial cells were positive for S100 protein and muscle-specific actin. According to these findings, we diagnosed epithelial-myoepithelial carcinoma. After undergoing pneumonectomy, the patient has been disease free for 34 months.
Subject(s)
Carcinoma/diagnosis , Carcinoma/secondary , Lung Neoplasms/diagnosis , Lung Neoplasms/secondary , Neoplasms, Glandular and Epithelial/diagnosis , Neoplasms, Glandular and Epithelial/secondary , Aged , Bronchial Neoplasms/diagnosis , Bronchial Neoplasms/pathology , Bronchial Neoplasms/surgery , Carcinoma/surgery , Humans , Lung Neoplasms/surgery , Male , Neoplasms, Glandular and Epithelial/surgery , Pneumonectomy/methodsABSTRACT
The relation of Epstein-Barr virus (EBV) and Hodgkin's disease (HD) has been suggested by serologic, epidemiological and molecular biologic studies. According to these studies the incidence of EBV in HD is high. In the present study, the EBV association with HD in Trakya Region of Turkey was investigated. We investigated the presence of EBV in 44 cases of HD. Fluorescein-labelled antisense EBV (EBER-RNA) was performed by in situ hybridization. There were 28 males and 16 females, with a mean age of 40 years (range 4-80 years). Histological subtypes included nodular sclerosis Hodgkin's disease (NSHD) in 18 (40.9%), mixed cellularity (MCHD) in 16 (36.4%), lymphocyte predominance (LPHD) in 7 (15.9%), and lymphocyte depletion (LDHD) in 3 (6.8%). EBV was expressed in 30 cases (68.2%). High EBV association was found with mixed cellularity 75% and nodular sclerosis 72.2%. In lymphocyte predominance and in lymphocyte depletion cases the EBV positivity was 57.1% and 33.3%, respectively. All of 7 cases, younger than 15 years old, were positive for EBV. HD in Trakya Region showed a high association with EBV as in developing countries. Our findings suggest that EBV plays an important role in the pathogenesis of HD in Turkey.
