Bilateral popliteal arterial dissection.

A clinical feature of bilateral popliteal arterial dissection without involving the descending aorta, bilateral iliac, as well as femoral arteries has never been reported in the past literature. We report a 56-year-old man with hypertension and coronary artery disease who presented to our emergency department with complaints of bilateral knee pain after long-distance walking. Physical examination was notable for elevated blood pressure, but there was no palpable pulsation over dorsalis pedis arteries on his feet. Laboratory evaluation revealed a d-dimer level of 35.2 mg/L (FEU) on the day of the test and 1.2 mg/L one and a half months ago (normal level, <0.55). These findings were suggestive of a recent-onset peripheral arterial occlusive disorder. Computed tomography of the aorta showed bilateral popliteal arterial dissection with arterial intimal flap. Abdominal aorta, bilateral iliac, and femoral arteries remained intact with only arteriosclerotic change. Minimally invasive endovascular stent grafting was then performed. The patient had an uneventful recovery.

Pseudoaortic dissection.

A 72-year-old man was brought to our emergency department (ED) because of upper abdominal pain. Initial vitals at the triage station were significant only for high blood pressure. Computed tomography (CT) of the abdomen with contrast enhancement revealed an intimal flap over his descending aorta, the infrarenal part. The flap was found throughout the descending aorta until its bifurcation. Stanford type B dissection was initially suspected. However, a reconstructed CT discovered an interesting feature of the aorta. A high aortic bifurcation at the level of the second lumbar vertebrae, in conjunction with bilateral common iliac arteries, appeared in pair, masquerading the CT image as infrarenal aortic dissection. Actually, that was a variant in human anatomy. A reconstructed sagittal view of the CT scan is mandatory for a patient with abdomen pain to avoid misinterpretation of the radiographic image.

Recurrent choking as a presenting feature of aortic arch aneurysm.

Aortic arch aneurysm occurs more commonly in the aging population. Rapid expansion and symptomatic patients should undergo aneurysm resection regardless of size. An 87-year-old man was brought to our emergency department because of choking on food during his dinner. The patient did not have hoarseness, dysarthria, dysphagia, as well as other neurologic symptoms. He was finally found to have an aortic arch aneurysm. Swallowing is complex neuromuscular activity consisting essentially of 3 phases: oral, pharyngeal, and esophageal. The pharyngeal phase was mainly mediated by the pharyngeal plexuses of both the glossopharyngeal and vagus nerves. Uncoordinated movement of the pharyngeal muscles because of a stretch of the left vagus nerve or its plexus by an enlarging aneurysm may be the possible mechanism of choking in this patient.

Ovarian cystic teratoma torsion in pregnancy.

Acute abdominal pain during pregnancy is encountered frequently and the differential diagnosis is extensive. Acute ovarian torsion in a pregnant patient is rare and is difficult to diagnose. Infarction caused by ovarian torsion will result if the twist is not unwound spontaneously or surgically in a timely fashion. The case is described of a 28-year-old primigravida who originally presented to the emergency department with right lower abdominal pain. The patient was ultimately found to have an extremely large cystic teratoma of the right ovary with concomitant torsion. Bedside ultrasonography is a highly accessible tool that can be used in a pregnant woman for screening a mass or ascites. Laparoscopic surgery has now been accepted as a safe modality for definitive diagnosis and therapeutic intervention. Because acute ovarian torsion is not encountered frequently, timely diagnosis is required to prevent mortality and minimise morbidity. It is important to keep ovarian torsion in the differential diagnosis of any pregnant woman with acute abdominal pain. Emergency physicians should be aware of the possibility of acute ovarian torsion in pregnant women and should have a high index of suspicion. Early surgical intervention should be undertaken.