[Experience of a Rapid Diagnostic and Short Stay Unit implemented in Argentina].

Introduction: Rapid diagnostic units (RDUs) represent an alternative to conventional hospitalization diagnosis, enabling outpatient care for patients with suspected potentially severe disease. The first year of operation of a Rapid Diagnostic and Short Stay Unit (RDSSU) is described.

Materials And Methods: Retrospective study involving 696 patients, documenting 739 events defined as each patient's entry into the RDU for specific reasons.

[Carotid sinus syndrome associated to cervical B-cell lymphoma].

We present the case of a 75-year-old male with history of 5 months of right submaxillary tumor, with no clear etiology, who consulted for episodes of syncope preceded by dyspnea and sudden onset of profuse sweating. During his stay at the hospital, electrocardiographic records showed more than 3-second-long pauses after head movements, with a sensation of imminent loss of consciousness associated. A temporary pacemaker was required.

[Tumor lysis syndrome].

Tumor lysis syndrome (SLT) is a rare and potentially fatal entity. It represents an oncological emergency. It can be diagnosed by its clinical presentation and also by laboratory results.

[Hemophagocytosis secondary to dengue fever].

Dengue virus infection constitutes a major public health problem worldwide. It is caused by a virus belonging to the Flaviviridae family. It produces a wide range of clinical presentations, from asymptomatic infection to severe forms of the disease with hemorrhagic fever or shock secondary to capillary leak syndrome.

[Clinical manifestations of organizing pneumonia].

Organizing pneumonia is a clinical entity asociated with nonspecific symptoms and radiological findings and abnormalities in pulmonary function tests. It is defined by the characteristic histopathological pattern: filling of alveoli and respiratory bronchioles by plugs of granulation tissue. It can be idiopathic (COP) or secondary to other causes (SOP).

[Granulomatous meningitis, crescentic glomerulonephritis and vasculitis].

Meningeal involvement is an infrequent manifestation of Wegener's granulomatosis. Clinical manifestations can be headache with high protein level in the cerebrospinal fluid and an enhanced MRI signal of granulomatous thickening of the duramater in the brain. We report a 57 year-old male with Wegener granulomatosis with onset manifestations of asymptomatic granulomatous meningitis, upper respiratory tract, ears and orbits involvement.