The authors describe the characteristics of branchiogenic carcinoma as that of a pathological entity on the occasion of reporting four cases. The clinical course of the disease and the cytological and histological features are discussed on the basis of our observations and literature data. The authors stress the importance of careful and repeated clinical examinations, which exclude the possibility of a primary tumor of other localization, in establishing the diagnosis of branchiogenic carcinoma.

The gastric pseudolymphoma (GP) is regarded as a benign non-tumorous hyperplastic alteration starting out from the lymph elements of the gastric wall. The gastric ulcer can play the role of an eliciting factor. In the reported GP angioproliferative foci were observed. GP is related to or identical with lymphoid hyperplasia in other localisations. The presence of angioproliferative foci is an important differential diagnostic sign.

Histogenesis and histology of papillary cystadenoma lymphomatosum (PCL) is summarized. A case is described in detail in which PCL recurred after surgical removal and the epithelial elements of the PCL underwent malignant transformation. The literature of similar cases is reviewed and the alternatives for the histogenesis of malignant PCL is briefly discussed.

Investigators discuss the aetiological, pathological, clinical, diagnostical and therapeutic problems of carcinoma of the lip. 2623 cases treated in our institute are analyzed; the treatment methods and their results are presented. For patients of stages I and II, certain forms of radiotherapy were applied; for those of stage III, surgical intervention plus radiotherapy was employed. In cases with metastases to cervical lymph nodes, surgical operations and radiotherapy were used. The 5-year survival average of patients with carcinoma of the lower lip was 86.0%, of those with carcinoma of the upper lip, 57.8%.

The patho-histological, diagnostical and therapeutical problems of the mixed tumours of the parotid gland are discussed. In the cases of the benign mixed tumours the extensive excision has mostly been combined with radium treatment, and less frequently with post-operative X-ray radiation treatment. The percentage of the 5 years’ relapses corresponded to 4.2% in the authors’ material. In the cases of malignant mixed tumours similarly combined treatment has been made. The 5-years’ tumour-free condition corresponded to 9% and the 5 years’ survival to 41%. On the basis of the data of the literature and his own experiences the augmented radicality of the surgical intervention and the simultaneous radiation treatment are emphasized by the authors.