Pseudoaneurysm of the right hepatic artery following cholangiocarcinoma resection. A case report and review of the literature.

Pseudoaneurysms of the hepatic artery are infrequent, but potentially fatal. Apart from the performance of percutaneous techniques, such lesions are fundamentally produced as a result of surgery. The causal surgical techniques may sometimes be quite complex, though in other cases they are very common (e.

[Single preoperative dose of metronidazole plus gentamicin for antimicrobial prophylaxis in colorectal surgery].

Background And Objective: To prove that a single-preoperative dose (SD) of metronidazole plus gentamicin guarantees the same clinical effectiveness than the same dose administered in a multiple-perioperative schedule (MD), with a reduction of the direct costs.

Patients And Method: A retrospective cohort study with patients undergoing elective colorectal surgery between 1995 and 2003 was designed. Patients in the cohort of cases received a SD of metronidazole 1500 mg plus gentamicin 240 mg between 1999 and 2003.

[Usefulness of computed tomography in determining risk of recurrence after a first episode of primary spontaneous pneumothorax: therapeutic implications].

Objective: The main cause of primary spontaneous pneumothorax is the rupture of subpleural blebs or bullae. The presence of bullae may also lead to an increased risk of recurrence. The best way to detect them is by means of computed tomography (CT).

[Gastric cancer: probability assessment after lymph node-negative staging and its consequences].

Objective: To provide an approach to calculating the probability of error after lymph node-negative staging in gastric cancer.

Patients And Method: Retrospective data of 75 gastric resections for cancer were used to calculate the probability of error in general, according to T staging of the TNM classification (6th edition) and according to the type of lymphadenectomy performed. A modification of a procedure based on Bayes' theorem was used.