ABSTRACT
A 60-year-old male was admitted with massive upper gastrointestinal bleeding following a gastric biopsy. Repeat gastroduodenoscopy failed to identify the source. Angiography identified bleeding from an arteriovenous malformation at the fundus of the stomach. This was controlled by embolisation.
Subject(s)
Arteriovenous Malformations/complications , Embolization, Therapeutic/methods , Gastrointestinal Hemorrhage/etiology , Angiography/methods , Arteriovenous Malformations/diagnostic imaging , Arteriovenous Malformations/therapy , Biopsy/adverse effects , Endoscopy, Gastrointestinal , Gastric Fundus/blood supply , Gastric Fundus/pathology , Gastrointestinal Hemorrhage/therapy , Hematemesis/etiology , Humans , Male , Melena/etiology , Middle AgedABSTRACT
Tc-99m labeled red blood cell scintigraphy is a valuable, noninvasive technique for differentiating hepatic hemangioma from other lesions by demonstrating a "perfusion blood pool mismatch." The characteristic finding on dynamic CT scan of peripheral and subsequent central enhancement is not usually seen on Tc-99m RBC angiography, probably due to rapid mixing and dilution of the radionuclide and low resolution of the gamma camera. A case of multiple hepatic hemangioma is presented in which Tc-99m RBC dynamic angiography demonstrated peripheral enhancement with subsequent central filling. In addition, delayed static images showed more hepatic lesions.
Subject(s)
Hemangioma/diagnostic imaging , Liver Neoplasms/diagnostic imaging , Neoplasms, Multiple Primary/diagnostic imaging , Adult , Erythrocytes , Humans , Liver/diagnostic imaging , Male , Radiography , Radionuclide Imaging , TechnetiumABSTRACT
The carotid angiographic studies performed in a teaching hospital (King Khalid University Hospital, Riyadh) in Saudi Arabia were reviewed, and the incidence of lesions demonstrated was analysed. Intracranial tumours accounted for 50% of the lesions, with meningiomas being 40%, whilst arteriovenous malformations accounted for 5.9% of lesions. It was noted that the incidence of atherosclerosis and arteritis was low, and the examination was almost without complications. Some lesions supplied by vertebral arteries were missed. In view of this, vertebral angiography is advocated in those cases with suspected supratentorial tumour especially when the carotid angiograms are normal.
Subject(s)
Angiography/standards , Brain Diseases/diagnostic imaging , Carotid Arteries/diagnostic imaging , Adolescent , Adult , Aged , Angiography/methods , Brain Diseases/epidemiology , Brain Diseases/pathology , Child , Child, Preschool , Female , Hospitals, Teaching , Humans , Incidence , Infant , Infant, Newborn , Male , Middle Aged , Saudi Arabia/epidemiology , Tomography, X-Ray ComputedABSTRACT
A detailed radiologic and anatomic study of one horseshoe lung syndrome has already been published from this centre. A further case of horseshoe lung, which was also diagnosed prospectively by radiology, is described. Alongside, this is a set of a group of three conditions: we describe a right accessory lung with a peculiar feeding arterial branch originating from the left basal pulmonary artery. The bronchogram and oesophagogram of this case were normal. The other is a case of bridging bronchus where the left lower lobe bronchus originates from the right main stem bronchus. This was discovered at post mortem bronchogram performed on a 19 weeks foetus. Finally, in the dog, we found that the pulmonary angiogram and bronchogram display close similarity to human horseshoe lung though the dog has two separate lungs. The common denominator of all above cases is the presence of a pulmonary arterial branch or bronchus crossing the midline from the ipsi to the contralateral side. Therefore, it may be concluded "in contradiction to the common belief" that pulmonary angiography or bronchography alone is not sufficient for the diagnosis of horseshoe lung. When only one of these investigations is available, computerized tomography is necessary to show the isthmic lung tissue before the diagnosis of horseshoe lung is confirmed.
