Progress in the Study of Cardiovascular Physiology During the Italian Renaissance.

This short report underlines the importance of collaboration and communication among scientists. The ideals of progress in medicine and in the care of suffering people have represented continuous stimuli allowing to overcome prejudices, religious and political differences. The modern concepts of blood circulation have been established through a close collaboration and exchanges of ideas among scientists coming from different countries, different religious and political backgrounds. In those days Europe was theater of continuous wars based on political and religious contrasts. There were continuous outbreaks of Plague in several countries. Religious contrasts occurred inside the Christianity and between the Christianity and Islam; contrasts which were based on theological disputes associated with economic and expansionist ambitions, resulting in extreme and rigid religious orthodoxy. Despite these difficulties, medical scientists collaborated overcoming the close boundaries of everyday general confrontations. The ambition for advancement in science and for progress with the potential consequent common good inspired a general sense of community and drove to overcome the boundaries based on contrasts. Science, scientific thinking, dedication to research and to improve knowledge represented yesterday and continue to represent today the common ambition to break down cultural, religious and economic walls. The generosity of science is superior to the superstition of contrasts and arrogance. A message we can bring from the past back to the future and back to today.

Siblings Diagnosed With Primary Neuroendocrine Tumor of the Left Hepatic Duct.

Primary left hepatic duct neuroendocrine tumors are extremely rare. We describe 2 cases of siblings, a 51-year-old brother and a 48-year-old sister, who were both diagnosed with primary left hepatic duct neuroendocrine tumor. Both patients underwent successful left hepatectomy and are both alive with no recurrence. For this rare malignancy, while definitive diagnosis is made only by histopathology, a margin-free surgical resection remains the only curative treatment modality to date.

Lung neovascularity in pulmonary arterial hypertension associated with congenital heart defects and idiopathic pulmonary arterial hypertension: study of 198 patients.

OBJECTIVES: To correlate the severity of lung neovascularity (Sheehan vessels) with the cause and haemodynamic severity of pulmonary arterial hypertension (PAH), pulmonary artery (PA) size and heart disease type in patients with PH associated with congenital heart diseases (PAH-CHD) and idiopathic PH (IPAH). METHODS: We reviewed the HRCT and CT pulmonary angiography studies of 87 patients with PAH-CHD and 111 with IPAH; all had undergone right heart catheterisation. We evaluated the PA size and severity of neovascularity on CT. RESULTS: Neovascularity, which was found in 72% of PAH-CHD (56% with Eisenmenger's syndrome) and in 22% of IPAH patients, is significantly related to the severity of PH and all patients with severe neovascularity had intermediate or high PH. All PAH-CHD patients had a dilated PA with a greater risk of developing severe dilatation (diameter >5 cm). The neovascularity correlated with the PA size only in IPAH. CONCLUSIONS: Neovascularity even if not pathognomonic for PAH-CHD, is significantly more common in these patients, especially in Eisenmenger's syndrome. It is often the first CT sign to indicate the severity of PH in PAH-CHD and IPAH. A neovascularity ≥5 on CT indicates a intermediate or high PH. KEY POINTS: • Large retrospective studying specific lung disorders in patients with pulmonary arterial hypertension. • Neovascularity is often the first CT sign indicating the severity of pulmonary hypertension Alterations of lung parenchyma on CT in pulmonary hypertension are described • The first study to assess the severity of pulmonary hypertension by CT • If substantiated, CT might eventually replace some cardiac catheterisation for evaluating PH.