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To describe a prospective method of quality assurance adjusted to an ideal group of pathologists, easily feasible in routine surgical pathology. The Authors examined the same slides (EE) independently and without time-limits. In the same session the individual diagnosis were compared and discussed in order to provide only one conclusive diagnoses. After the discussion, diagnostic agreement is 100%. Peer and simultaneous review yields sufficient benefits in increasing the accuracy of diagnostic reports. It stimulates discussion of diagnostic criteria and terminology, creates more uniform reports, and serves as an educational vehicle for pathologists.

A case of inflammatory pseudotumor of lymph node in a 56-year-old man is described. The awareness of this benign reaction pattern is of great importance for differential diagnosis with many nodal lesions.

We reported a case of lipoid proteinosis with severe respiratory symptomatology. Diagnosis has been made out of clinical and histological data by laryngeal biopsy. Immunohistochemistry confirms the altered composition of extracellular matrix.

Multilocular cyst of the adult kidney is a benign lesion of uncertain pathogenesis. We report a case studied by immunohistochemical techniques. A malformative histogenesis is suggested.

Proliferating cell index has been valued in colic adenomas, using anti PCNA-PC10 antibody. The results have been compared with grading. An high proliferating grade has been shown in patients with multiple adenomas: this finding suggests a prognostic value of proliferating cell index.