Imaging
A pleural effusion appears as an area of whiteness on a standard posteroanterior chest X-ray. Normally, the space between the visceral pleura and the parietal pleura cannot be seen. A pleural effusion infiltrates the space between these layers. Because the pleural effusion has a density similar to water, it can be seen on radiographs. Since the effusion has greater density than the rest of the lung, it gravitates towards the lower portions of the pleural cavity. The pleural effusion behaves according to basic fluid dynamics, conforming to the shape of pleural space, which is determined by the lung and chest wall. If the pleural space contains both air and fluid, then an air-fluid level that is horizontal will be present, instead of conforming to the lung space. Chest radiographs in the lateral decubitus position (with the patient lying on the side of the pleural effusion) are more sensitive and can detect as little as 50 mL of fluid. Between 250 and 600mL of fluid must be present before upright chest X-rays can detect a pleural effusion (e.g., blunted costophrenic angles).Chest computed tomography is more accurate for diagnosis and may be obtained to better characterize the presence, size, and characteristics of a pleural effusion. Lung ultrasound, nearly as accurate as CT and more accurate than chest X-ray, is increasingly being used at the point of care to diagnose pleural effusions, with the advantage that it is a safe, dynamic, and repeatable imaging modality.
Diagnosis
The diagnosis for argininemia can usually be done using fetal blood sample. One can look for the following indicators as to the presence of the condition:
Plasma ammonia concentration. Urinary orotic acid concentration
Red blood cell arginase enzyme activity (measurement)

Treatment
The treatment for infants (individuals) with argininemia is the following, including medications:

References
Further reading
(editors), Jean-Marie Saudubray, Georges van den Berghe, John H. Walter; Berghe, Georges van den; Walter, John H. (2012). Inborn metabolic diseases diagnosis and treatment (5th ed.). Berlin: Springer. ISBN 9783642157202. Retrieved 28 November 2016. {{cite book}}: |last1= has generic name (help)
Piña-Garza, J. Eric (2013). Fenichels Clinical pediatric neurology a signs and symptoms approach (7th ed.). Oxford: Saunders. ISBN 978-1455748129. Retrieved 28 November 2016. == External links ==