[Anorectal manometry: standardisation of the execution technique]. / La manometria anorettale: standardizzazione della tecnica di esecuzione.

Anorectal manometry is the basic investigation for the study of anorectal function. The lack of a standard execution technique and of any common definition of the manometric parameters constitutes a major limitation. The aim of the present study is to propose a standard technique for performing manometry. In addition we also focus on those manometric parameters that are easily identified and interpreted for the systematic study of a proctological patient. The protocol used is organised in three phases: (i) tests with a radial channel probe with continuous extraction, which provide information on the length of the anal canal and on the precise site of maximum pressure; (ii) tests with a radial channel probe with stationary extraction, which does not involve reflex contraction of the sphincter apparatus and therefore permits better evaluation of sphincter pressure when the muscles are relaxed as well as the identification of slow and ultra-slow waves; (iii) tests with a helicoidal probe and a balloon for the evaluation of the anorectal inhibitory reflex and of anorectal sensitivity. Using this protocol it is possible to perform manometry in less than 30 minutes and to define the importance of anorectal function with approximately 10 parameters which are easily identified and interpreted.

[Medullary carcinoma of the thyroid: a clinical contribution]. / Il carcinoma midollare della tiroide: contributo clinico.

The authors report 20 cases of medullary thyroid carcinoma over the period from 1980 to 2000. Two patients turned out to be inoperable and 18 patients underwent total thyroidectomy, associated with dissection of the central lymphatic compartment in 5 patients and with dissection of the central and lateral lymphatic compartments in 10 patients with clinical or instrumental evidence of cervical lymphadenomegaly. Serum calcitonin levels proved to be a reliable marker for the diagnosis of persistence or recurrence of the disease. The follow-up, lasting from 1 to 208 months, demonstrated that in 7 cases in which serum levels of calcitonin underwent normalization there was no recurrence of disease. Among 11 cases with persistence of high calcitonin levels, 6 died and only 2 presented no evidence of metastases. On the basis of our analysis of the cases reported, total thyroidectomy associated with dissection of the central lymphatic compartment is an adequate treatment for patients in stages I and II. The authors regard routine dissection of the lateral lymphatic compartment as unadvisable.