Pulmonary alveolar microlithiasis (PAM) is a rare chronic lung disease characterized by deposition of intra alveolar calcium and phosphate in bilateral lung parenchyma with predominance in lower and mid zones. Etiology and pathogenesis is not fully understood. However, mutation in SLC34A2 gene that encodes a sodium phosphate co-transporter in alveolar type-II cells resulting in formation and ac...

Microliths and ossification were found in the lungs of a 12-year-old bitch suffering from compound mammary gland tumor which has disseminated in the inguinal lymph node glands and the lungs. Pulmonary ossification appeared grossly as irregular stony sharp particles which infiltrated the lung tissue and were readily recognizable from under the pleura as grayish sharp protruding particles. Micros...

1. Universidade Federal Fluminense, Niterói, Brasil. 2. Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brasil. 3. Faculdade de Medicina de Petrópolis, Petrópolis, Brasil. 4. Santa Casa de Misericórdia de Porto Alegre, Porto Alegre, Brasil. 5. Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, Brasil. A 47-year-old male, previously diagnosed with dilated cardiomyop...

This pictorial essay aims to present various lesions that could present as consolidations with diffuse of focal high attenuation on computed tomography, helping to make the diagnosis more confident and specific. The radiologic literature has limited information about such findings and the role of computed tomography in the differential diagnosis. The following diseases are presented: metastatic...