The 5 year survival of bronchial-pulmonary carcinomas remains poor, between 6 % and 14 %/men and 7 % to 18 %/women. Treatment orientation is influenced by clinical staging and morphological classification in biopsies of 70 % of the cases. Method: This study comprised 41 surgical specimens where we compared immunohistochemistry in-between Adenocarcinomas (18), Epidermoid Carcinomas (12) and the heterogeneous groups of Large Cell Neuroendocrine Carcinoma (3), Small Cell Lung Cancer (1), Large Cell Carcinoma (2), Adenosquamous Carcinoma (2) and Pleomorphic Carcinomas (3) with Max 18 F-Fluordesoxiglucose (FDG), a clinical parameter based in PET to preview diagnosis and prognosis. Results: We found significant differences (p=0.028) between TTF-1 positive and negative Adenocarcinomas where the 18 F-FDG capture was lower in TTF-1 positive cases, indicating lower metabolic activity. TTF-1 negative Adenocarcinomas have similar and higher metabolic activity as Epidermoid Carcinomas. The other histological types have FDG capture similar in between the two defined groups. Conclusion: Immunohistochemical and 18 F-FDG analysis correlate with clinical differences between Adenocarcinomas and Epidermoid Carcinomas, where TTF-1 negative Adenocarcinomas are biologically similar to Epidermoid Carcinomas, requiring a different medical approach as well as molecular pathology particular interpretation. These results strain the classification of bronchial TTF-1 negative Adenocarcinomas because they are different from the terminal respiratory unit TTF-1 positive Adenocarcinomas. Objective: According to researchers pneumonias are characterized by increase number of alveolar macrophages population after increased migration of monocytes from bone marrow and blood into the alveolar space. Method: We examined 60 observations of pneumonia with bacteriological, histological and blood monocytes examination in all cases. Bacteriological study was performed at the Institute of antimicrobial chemotherapy. Histological examination was performed in the Smolensk regional institute of pathology. Results: In the foci of pneumonias we discovered mainly mixed gram positive and gram negative microorganisms. Ten observations were characterized by an increase in the absolute number of blood monocytes. Fifty observations did not reveal excess levels of blood monocytes. In all cases with an increase in the number of blood monocytes, gram negative bacteria were isolated. In cases with normal number of blood monocytes some of the microorganisms were gram positive. Conclusion: Gram negative bacteria result in activation of the monocytes and their entry from the bone marrow into the blood more than gram positive bacteria. Objective: Bronchial carcinoids and schwannomas are uncommon, slowly growing, low-grade neoplasms. Carcinoid tumors are thought to arise from neuroendocrine/Kulchitsky's cells of bronchial epithelium. Schwannomas are thought to originate from schwann cells. Clinically they may be asymptomatic or present with non resolving recurrent pneumonia, hemoptysis, respiratory distress. Conclusion: We present two cases of respiratory distress in two teenage patients.