[Technique of cellular clot-block for the processing of material obtained by puncture-aspiration with fine needle].

A method is described for the processing of material obtained by fine needle aspiration. During the procedure, continuous aspiration, movement and rotation of the needle is performed in order to obtain at least 2 ml of material and blood. Samples are processed immediately for cytology and the rest of the material is left in the syringe until it coagulates. The clot is withdrawn from the syringe by retrieving the embolus and the formed material is introduced in formol and processed as usual for histology. This allows for the examination of all the material obtained by a pathologist who may not have experience in cytology.