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Crazy paving computed tomography pattern may be due to a number of causes, one of them being Pulmonary Alveolar Proteinosis, a rare condition leading to respiratory failure and often to death. We present the case of a young woman with a one-year history of progressive dyspnea and dry cough, who consulted for an acute onset of fever, chills, malaise and severe hypoxemic respiratory failure (PaO2 = 51.9 mmHg; FiO2 = 0.50) with a ‘crazy paving’ pattern on chest CT. This diagnostic challenge was resolved by a surgical lung biopsy that showed a pulmonary alveolar proteinosis.Takinginto account that the traditional treatment using whole lung lavage had already failed in this patient, a novel therapeutic approach was settled. A series of 4 lobar lavages with a perfluorocarbon (Perflubron) under local anesthesia followed by 5 plasmapheresis sessions were carried out. The patient showed radiographic and functional improvement almost immediately after this treatment. PaO2 was 89.9 mmHg breathing room air and FVC and FEV1 increased to reach 77 and 75% respectively of their normal reference values. Because of its chemical and physical properties we think this novel therapeutic approach should be a valuable alternative to saline solution for whole lung lavage in these cases.

Patrón Crazy Paving en una mujer joven. Hallazgo inesperado y tratamiento no tradicional en un caso de proteinosis alveolar pulmonar