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The Authors, starting from observation of a hydatid cyst of the thyroid, make an examination of this very rare pathological occurrence. They then put forward and evaluate the fundamental problem linked to this localisation of hydatidosis, a problem which can be summed up as the lack of pathological identification of the clinical pattern and the consequent ease of making a diagnostic error. They conclude by stating that the sole differential diagnostic criterion in relation to other diseases that may be considered (cystic uninodular goitre, adenoma, epithelial cyst, haematic pseudocyst) consists in the simple recollection of the possible existence of this very rare localisation of the echinococcus.

With a view to evaluating whether and how far a fuller case documentation may contribute to a better knowledge of the real possibilities of multifilament stainless steel wires in surgery of the colon, the Authors present and discuss the results they obtained during the course of experimental research on extramucosa single-layer sutures. In the light of their personal histological documents, they emphasize the absolute biological inertia of this suture material, a property which, together with the capacity of not suffering the colliquative action of germs, means that multifilament stainless steel wires can be given full rights of domicile in colon surgery.