title: [Slow-resolution pneumonia: radiologic and tomodensitometric features].
abstract: To assess the radiologic findings of unresolving pneumonias (radiologic signs not normalized at the end of the fourth week of antibiotic therapy), the radiologic (192) and CT examinations (33) of 50 patients were reviewed, for a total of 64 pulmonary parenchymal lesions. These lesions presented as masses (3; 4.6%), parenchymal thickenings with aerial bronchogram (41; 63.7%), sometimes escavated (4; 10%), alveolar ground glass alterations (4; 6.2%), more frequent on the right side (49; 73%), mostly in the upper lobe (21; 32.8%). Pleural effusion was demonstrated in 16 patients (32%) and lymphadenopathies were shown in 8 patients (8%). When possible, the responsible germ was isolated with microbiological expectoration test (14; 35.3%), bronchoscopy associated with bronchoalveolar lavage (7; 37.5%) and needle biopsy in the mass (2; 5%). The germs were Candida (9), haemophilus influentiae (1), Klebsiella (1), pneumococcus (1), Pseudomonas (3), Staphylococcus aureus (4), streptococcus alpha hemoliticus (6). There are no typical radiologic and CT findings for the described lesions in different-patients and different germs can produce the same changes. Therefore, pulmonary inflammations must be followed to their complete resolution, to rule out the chance of a neoplastic process (obstructive pneumonia). The first radiologic control must be made at least 15 days after the beginning of therapy for the anatomo-pathologic processes of recovery to show radiographically. CT can be fundamental in the differential diagnosis with neoplasm, in unresolving pneumonia, to study the tracheobronchial tree, to study lymphadenopathies and to guide needle biopsy.
authors.affiliation: Servizio di Radiologia, Ospedale di Montebelluna (TV).
authors.forename: R
authors.initials: R
authors.lastname: Polverosi
authors.forename: E
authors.initials: E
authors.lastname: Zanellato
authors.forename: P
authors.initials: P
authors.lastname: Zanlungo
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011014:Pneumonia / Q000000981:diagnostic imaging*; D013997:Time Factors; D014057:Tomography, X-Ray Computed