1. A pulmonary hamartoma is a benign lung tumor composed of various tissues that is common and typically asymptomatic. 2. A tuberculoma is a well-defined mass caused by infection with Mycobacterium tuberculosis, most commonly appearing in the lungs and brain. 3. Less common focal lung lesions include bronchial carcinoids, rheumatoid nodules, and intrapulmonary lymph nodes.

1. IMAGING OF FOCAL
LUNG LESIONS
DR SAKHER-ALKHADERI
CONSULTANT RADIOLOGISTAMC

9. A pulmonary hamartoma is a benign neoplasm composed of cartilage,
connective tissue, muscle, fat, and bone. It is one of the commonest
benign tumours of the lung, and accounts for ~8% of all lung
neoplasms and 6% of solitary pulmonary nodules.

11. PULMONARY HAMARTOMA

12. PULMONARY HAMARTOMA

13. TUBERCULOMA
A tuberculoma or tuberculous granuloma is a well defined focal mass that results from
infection with Mycobacterium tuberculosis, and is one of several morphological forms of
tuberculous disease.Tuberculomas occur most commonly in the brain and lung.
when the bronchus is blocked, caseous material can no longer drain, the contained air is
absorbed, and on the radiograph a rounded homogeneous tuberculoma replaces cavitation.

31. Less common
nodules
Bronchial
carcinoid
Rheumatoid
nodule
Inta pulmonary
lymph node

32. BRONCHIAL CARCINOID TUMOR

33. Clinical presentation
Presentation can vary dependent on location. Central neoplasms usually
give symptoms due to bronchial obstruction (such symptoms can include
pneumonia, atelectasis, bronchiectasis, emphysema or even a lung abscess);
if airway obstruction is partial, symptoms such as cough, wheezing and
recurrent pulmonary infections can occur. Peripheral tumours on the
contrary are generally asymptomatic and they are discovered
occasionally. Most (~60%) tend to be central within the tracheo-bronchial
tree 3.

34. Rheumatoid pulmonary nodules are a rare pulmonary
manifestation of rheumatoid arthritis.The are thought to
occur in <1% of patients with rheumatoid arthritis.
Rheumatoid nodules tend to be located in peripheral
zones of the upper and middle lung with tendency of
cavitation .

35. INTRAPULMONARY LYMPHNODE

60. Chronic

61. PNEUMATOCELE

62. Pneumatocoeles are intrapulmonary air-filled cystic spaces that can have a variety of sizes
and appearances.They may contain air-fluid levels and are usually the result of ventilator-
inducted lung injury in neonates or post-pneumonic.They should not be mistaken for
a cavitating lung mass.
The majority of pneumatocoeles occur as a result of pneumonia (post pneumotic
pneumatocoele).
In addition to infection, pneumatococele are also seen in a number of other settings
including:
trauma - usually blunt trauma
positive pressure ventilation, especially in preterm neonates 4
hydrocarbon ingestion
-smooth inner margins
-contain little if any fluid
-wall (if visible) is thin and regular
-persist despite absence of symtpoms

68. THE END