... tone (sympathetic activity). Acknowledgment The technical assistance of G. Percoco and BD Lur... more ... tone (sympathetic activity). Acknowledgment The technical assistance of G. Percoco and BD Luraschi is gratefully appreciated. Vincenzo Sciacca, MD, F.ICA Via Eleonora Duse, 22 00197 Rome, Italy References 1. Shealy CN ...
We describe how the Harry Dym equation fits into the the bi-Hamiltonian formalism for the Kortewe... more We describe how the Harry Dym equation fits into the the bi-Hamiltonian formalism for the Korteweg-de Vries equation and other soliton equations. This is achieved by means of a certain Poisson pencil constructed from two compatible Poisson structures. We obtain an analogue of the Kadomtsev-Petviashivili hierarchy whose reduction leads to the Harry Dym hierarchy. We call such system the HD-KP hierarchy. Then, we construct an infinite system of ordinary differential equations (in infinitely many variables) that is equivalent to the HD-KP hierarchy. Its role is analogous to the one played by the Central System for the Kadomtsev-Petviashivili hierarchy.
The authors present a new diagnostic procedure to quickly and noninvasively diagnose the poplitea... more The authors present a new diagnostic procedure to quickly and noninvasively diagnose the popliteal artery entrapment syndrome. A large personal experience on the surgical treatment of such a disease (29 cases in 22 patients) allowed us to focus on the optimal diagnostic procedure useful to detect this problem at an early stage. The technique is based on continuous-wave Doppler and duplex scanning studies done both in the resting state and during active contraction of the calf muscles. If compression of the popliteal artery occurs with contraction of the calf muscles, it will be detected by a decrease in flow. This finding will also direct the radiologist to obtain films when the maneuver is repeated. This makes it unlikely that the diagnosis will be missed. Since July 1988 a total of 1212 patients were evaluated with continuous-wave Doppler for suspected chronic ischemia. From this group 41 patients were selected to be studied again with the combined continuous-wave Doppler and duplex scanning method for possible popliteal artery entrapment syndrome. Two cases were discovered and verified by dynamic angiography guided by continuous-wave Doppler and treated surgically.
We report the case of a patient with a gastric remnant relapse of an antral carcinoma resected 5 ... more We report the case of a patient with a gastric remnant relapse of an antral carcinoma resected 5 years before and presenting with the clinical feature of a secondary achalasia (pseudoachalasia). In spite of the patient's 4-month history of dysphagia and weight loss that suggested a malignant lesion, barium swallow, repeated endoscopic biopsies and computed tomography (CT) scan of the upper abdomen did not reveal any abnormalities to indicate a recurrence. However, in the following months, because of worsening symptoms, a further CT scan was performed and revealed thickening of the cardia and gastric wall. The patient underwent an exploratory laparotomy that showed an unresectable lesion involving the gastric fundus, the diaphragm and penetrating into the mediastinum, and therefore a palliative jejunostomy was performed.
Of ten patients with Takayasu&amp... more Of ten patients with Takayasu's disease (TD), all women, hospitalized in our Service in the last 5 years, seven were more than 38 years old. In these subjects the mean age at diagnosis was 41.2 years. These findings confirm that, in Italy as in other Western countries, including the United States, the diagnosis of TD is usually made later than in Asia and Latin America. This circumstance is probably related to actual later onset of the disease. In most of our cases both the anamnestic data and the angiographic findings demonstrated an evolution of the disease with further involvement of other arteries. Several arterial biopsies consistently showed, within a diffuse sclerosis, more or less extensive inflammatory aggregates characterized by a lymphoplasmacellular infiltration often associated with giant cells. Such a pattern testifies to the persistence of an active arteritis even a long time after the onset of the disease - "persistent active arteritis" instead of "residual arteritis." Pointing out such an evolution of the TD in every stage, our clinicopathologic study emphasizes the importance of a careful followup of the patients; it also advises continuous treatment with corticosteroid drugs, sometimes associated with immunosuppressors, to attain a reduction of the inflammatory process.
... Antonino Cavallaro, MD, FICA Vincenzo Sciacca, MD, FICA Antonio Sterpetti, MD and Sergio Stip... more ... Antonino Cavallaro, MD, FICA Vincenzo Sciacca, MD, FICA Antonio Sterpetti, MD and Sergio Stipa, MD, FACS ... Our findings agree with those of Shionoya and associates9 and of Sumner and Strandness 10 about the lack of correlation between preoperative ankle pres-...
... tone (sympathetic activity). Acknowledgment The technical assistance of G. Percoco and BD Lur... more ... tone (sympathetic activity). Acknowledgment The technical assistance of G. Percoco and BD Luraschi is gratefully appreciated. Vincenzo Sciacca, MD, F.ICA Via Eleonora Duse, 22 00197 Rome, Italy References 1. Shealy CN ...
We describe how the Harry Dym equation fits into the the bi-Hamiltonian formalism for the Kortewe... more We describe how the Harry Dym equation fits into the the bi-Hamiltonian formalism for the Korteweg-de Vries equation and other soliton equations. This is achieved by means of a certain Poisson pencil constructed from two compatible Poisson structures. We obtain an analogue of the Kadomtsev-Petviashivili hierarchy whose reduction leads to the Harry Dym hierarchy. We call such system the HD-KP hierarchy. Then, we construct an infinite system of ordinary differential equations (in infinitely many variables) that is equivalent to the HD-KP hierarchy. Its role is analogous to the one played by the Central System for the Kadomtsev-Petviashivili hierarchy.
The authors present a new diagnostic procedure to quickly and noninvasively diagnose the poplitea... more The authors present a new diagnostic procedure to quickly and noninvasively diagnose the popliteal artery entrapment syndrome. A large personal experience on the surgical treatment of such a disease (29 cases in 22 patients) allowed us to focus on the optimal diagnostic procedure useful to detect this problem at an early stage. The technique is based on continuous-wave Doppler and duplex scanning studies done both in the resting state and during active contraction of the calf muscles. If compression of the popliteal artery occurs with contraction of the calf muscles, it will be detected by a decrease in flow. This finding will also direct the radiologist to obtain films when the maneuver is repeated. This makes it unlikely that the diagnosis will be missed. Since July 1988 a total of 1212 patients were evaluated with continuous-wave Doppler for suspected chronic ischemia. From this group 41 patients were selected to be studied again with the combined continuous-wave Doppler and duplex scanning method for possible popliteal artery entrapment syndrome. Two cases were discovered and verified by dynamic angiography guided by continuous-wave Doppler and treated surgically.
We report the case of a patient with a gastric remnant relapse of an antral carcinoma resected 5 ... more We report the case of a patient with a gastric remnant relapse of an antral carcinoma resected 5 years before and presenting with the clinical feature of a secondary achalasia (pseudoachalasia). In spite of the patient's 4-month history of dysphagia and weight loss that suggested a malignant lesion, barium swallow, repeated endoscopic biopsies and computed tomography (CT) scan of the upper abdomen did not reveal any abnormalities to indicate a recurrence. However, in the following months, because of worsening symptoms, a further CT scan was performed and revealed thickening of the cardia and gastric wall. The patient underwent an exploratory laparotomy that showed an unresectable lesion involving the gastric fundus, the diaphragm and penetrating into the mediastinum, and therefore a palliative jejunostomy was performed.
Of ten patients with Takayasu&amp... more Of ten patients with Takayasu's disease (TD), all women, hospitalized in our Service in the last 5 years, seven were more than 38 years old. In these subjects the mean age at diagnosis was 41.2 years. These findings confirm that, in Italy as in other Western countries, including the United States, the diagnosis of TD is usually made later than in Asia and Latin America. This circumstance is probably related to actual later onset of the disease. In most of our cases both the anamnestic data and the angiographic findings demonstrated an evolution of the disease with further involvement of other arteries. Several arterial biopsies consistently showed, within a diffuse sclerosis, more or less extensive inflammatory aggregates characterized by a lymphoplasmacellular infiltration often associated with giant cells. Such a pattern testifies to the persistence of an active arteritis even a long time after the onset of the disease - "persistent active arteritis" instead of "residual arteritis." Pointing out such an evolution of the TD in every stage, our clinicopathologic study emphasizes the importance of a careful followup of the patients; it also advises continuous treatment with corticosteroid drugs, sometimes associated with immunosuppressors, to attain a reduction of the inflammatory process.
... Antonino Cavallaro, MD, FICA Vincenzo Sciacca, MD, FICA Antonio Sterpetti, MD and Sergio Stip... more ... Antonino Cavallaro, MD, FICA Vincenzo Sciacca, MD, FICA Antonio Sterpetti, MD and Sergio Stipa, MD, FACS ... Our findings agree with those of Shionoya and associates9 and of Sumner and Strandness 10 about the lack of correlation between preoperative ankle pres-...
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