Abnormal Behavior in Historical Context Abnormal Psychology Chapter 1.
Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be...
Transcript of Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be...
![Page 1: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/1.jpg)
1
Chest Radiology Interpretation: Findings of Tuberculosis
Get out your laptops, smart phones or other devices…
pollev.com/chestradiology
Case #1
![Page 2: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/2.jpg)
2
Plombage
Pneumonia
Cancer
![Page 3: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/3.jpg)
3
Reading the TB CXR
Be systematic!
Start centrally and work outwards
Normal or abnormal
If abnormal, consider technique as cause
Describe the finding(s)
Consider the significance of the finding(s)
Mediastinum
Hila
Lungs
Pleura
Bones
Mediastinum
![Page 4: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/4.jpg)
4
Lymphoma
AbnormalNormal
Metastatic disease (unknown primary)
Normal Abnormal
![Page 5: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/5.jpg)
5
Lung Cancer
Normal Abnormal
AO
PA
Heart
<55% thoracic diameter
Technique important
Larger in: AP film
Poor inspiration
Rotation
Children
True enlargement Chamber enlargement
Pericardial effusion
Mass
Artifactual cardiomegaly
![Page 6: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/6.jpg)
6
End stage rheumatic heart disease
Pericarditis
![Page 7: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/7.jpg)
7
Hila
Sarcoidosis
Normal Abnormal
![Page 8: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/8.jpg)
8
Pulmonary Hypertension
Normal Abnormal
Lungs
Pleura & Diaphragms
![Page 9: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/9.jpg)
9
Pleura & Diaphragms
![Page 10: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/10.jpg)
10
![Page 11: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/11.jpg)
11
Lung Pleura
Lung Pleura
Lung Pleura
![Page 12: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/12.jpg)
12
Lung Pleura
TB Empyema
Don’t forget about the bones
![Page 13: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/13.jpg)
13
Case #1
Case #2
![Page 14: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/14.jpg)
14
Inspiration: (≥10 posterior ribs)
1st rib
2nd rib3rd rib
![Page 15: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/15.jpg)
15
2nd3rd
4th
5th
6th
7th
8th
9th
10th
1st
Poor inspiration
Good inspiration
![Page 16: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/16.jpg)
16
Rotation
Rotation
![Page 17: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/17.jpg)
17
PenetrationIntervertebralDisks
Over-penetrated
![Page 18: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/18.jpg)
18
Case #3
Categories of lung opacities
1. Nodule(s) or mass(es)
2. Alveolar, airspace, consolidation
3. Interstitial (diffuse lines or nodules)
4. Airways (circular or tubular)
![Page 19: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/19.jpg)
19
Nodule ≤ 3cm, Mass > 3 cm
2.7 cm3.4 cm
Consolidation
Confluent opacity
Fluffy around the periphery
Air bronchograms
ARDS
![Page 20: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/20.jpg)
20
Normal Nodular Reticular
Interstitial disease
Miliary TB
Idiopathic pulmonary fibrosis
![Page 21: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/21.jpg)
21
Airways disease
Circular
Tubular
![Page 22: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/22.jpg)
22
Tuberculosis
Case 3
Questions
Could this be TB?
Is TB the most likely diagnosis?
If so, what form of TB does the radiology suggest?
Is active disease likely or unlikely?
What are possible alternative diseases to produce the radiographic pattern?
(the answer is always yes!)
![Page 23: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/23.jpg)
23
Key points
TB patterns overlap with each other
TB patterns overlap with other diseases
If there is an abnormality, it could be due to TB
You must know the classic TB patterns
But, if it doesn’t fit into a typical TB pattern, it is unlikely to be TB
It’s all about likelihood!
Clinical-radiographic correlation
Case #3
Reactivaton TB- radiology
LocationApical/posterior segments upper lobes
Superior segment lower lobes
Isolated anterior disease very unusual
Presence of cavities
Pleural disease
Volume loss/scarring early in disease
Diff dx: fungal, bacterial infections
![Page 24: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/24.jpg)
24
Chest Radiology Interpretation: Findings of Tuberculosis (Part 2)
Is this likely TB?
![Page 25: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/25.jpg)
25
Lobar anatomy
Left Lung
LLL
LUL
Right Lung
RLLRML
RUL
Lobar anatomy
Right Lung
RLLRML
RUL
Lobar anatomy
![Page 26: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/26.jpg)
26
RUL Pneumonia
Right Lung
RLLRML
RUL
Lobar anatomy
Right Lung
RLLRML
RUL
Lobar anatomy
![Page 27: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/27.jpg)
27
Silhouette sign
A B A B
Silhouette sign
A B A B
![Page 28: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/28.jpg)
28
Right Lung
RLLRML
RUL
Lobar anatomy
Diaphragm
RLL
ObscuredDiaphragm
ClearHeartBorder
RLL pneumonia
? Which lobe is involved
![Page 29: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/29.jpg)
29
Right Lung
RLLRML
RUL
Lobar anatomy
RML
RML pneumonia
ClearDiaphragm
ObscuredHeartBorder
? pneumonia
![Page 30: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/30.jpg)
30
? pneumonia
Anterior Posterior
Superior
Inferior
Lateral Viewof the Chest
Heart
![Page 31: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/31.jpg)
31
Lateral Viewof the Chest
Spine
Lateral Viewof the Chest
Diaphragm
Lateral Viewof the Chest
Diaphragm
![Page 32: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/32.jpg)
32
Normal LLL Pneumonia
Normal Pleural effusion
Normal Nodule
![Page 33: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/33.jpg)
33
Normal Pott’s disease
Case #4
![Page 34: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/34.jpg)
34
Abnormal Normal
Prior reactivation tuberculosis
Upper lobe scarringVolume loss
Retraction of hila superiorly
Band-like (linear) opacities
Architectural distortion
Asymmetric > symmetric
Bronchiectasis
Cystic changes
Diff dx: fungal, sarcoid, pneumoconioses
Prior TB
![Page 35: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/35.jpg)
35
Warning signs
Consolidation outside areas of fibrosis
Consolidation with cavitation
Lower lobe abnormalities
Non-calcified nodules (ill-defined)
Change from prior CXR
Reactivation TB
![Page 36: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/36.jpg)
36
Case #5
Solitary nodule/mass- the top 5
Granuloma
Hamartoma
Solitary metastasis
Bronchogenic carcinoma
Lots of others
![Page 37: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/37.jpg)
37
So you see a nodule on CXR…
1. Look for old films
2. Is diffuse calcification present?
3. Get a CT scan
When to get a CT scan?
Questionable CXR findings
Further characterization of CXR findings
Concern for cancer
![Page 38: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/38.jpg)
38
Role of CT scan for nodules1. Attempt to prove they are definitively
benignBenign pattern of calcification (diffuse, central,
ring-like, popcorn)
Fat
≥2 years of stability
Features of benign nodules include:
PopcornRing-like
CentralDiffuse Initial CT
24 monthfollow-up
Benign patterns of calcification
Presenceof fat
Long term stability
Hamartoma
Hamartoma
.
![Page 39: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/39.jpg)
39
Irregular calcification: adenocarcinoma
Role of CT scan for nodules1. Attempt to prove they are definitively
benignBenign pattern of calcification (diffuse, central,
ring-like, popcorn)
Fat
≥2 years of stability
2. Determine likelihood of nodule being benign or malignantLow likelihood -> CT follow-up
High likelihood -> immediate action (e.g. biopsy)
Suspicious features of nodules include:
Initial CT
Follow-up
Large size Spiculatedborders
Growth
The size threshold above which malignancy is likely demonstrates geographic variability, depending upon the prevalence of endemic granulomatous infection.
![Page 40: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/40.jpg)
40
Size and likelihood of cancer
Swensen. Radiology 2005; 235: 259
0% 1%
15%
81%
Follow-up recommendationsNodule size Low-risk patient High-risk patients
≤4 mm No follow-up 12 months
>4-6 mm 12 months 6-12 months
18-24 months
6-8 mm 6-12 months
18-24 months
3-6 months
9-12 months
24 months
>8 mm 3 months
9 months
24 months
3 months
9 months
24 months
Fleischner Guidelines. Radiology 2005; 237: 395.
Old tuberculosis
![Page 41: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/41.jpg)
41
Bronchogenic carcinoma
Case #6
Case #6Ghonfocus
![Page 42: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/42.jpg)
42
Case #6Rankecomplex
Case #7
![Page 43: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/43.jpg)
43
Primary tuberculosis
Difficult radiologic diagnosis
Mimics other diseases
FindingsNonspecific consolidation
Nodule
Lymphadenopathy
Cavitation unusual
LAD more common than with 2° TB (particularly kids + HIV)
Primary tuberculosis
Primary tuberculosis
![Page 44: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/44.jpg)
44
Case #8
Miliary pattern CXR
Miliary tuberculosis
Fungal infection (histo, cocci, blasto)
Metastases
Sarcoidosis
![Page 45: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/45.jpg)
45
Miliary tuberculosis
Miliary TB
Sarcoidosis
![Page 46: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/46.jpg)
46
Metastases
Case #10
Pleural + pericardial disease
Primary or secondary
May be only manifestation in 1° TB
Empyema more common in secondary
Adults >> kids
![Page 47: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/47.jpg)
47
Suspected pleural effusion
Case #11
![Page 48: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/48.jpg)
48
Case #11
Lymphoma
Leukemia
Germ cell tumor
Bacterial mediastinitis
Fungal infection
Tuberculosis
![Page 49: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/49.jpg)
49
Lymphadenopathy with TB
Kids >> adults
Primary >> secondary
Asymmetric (right > left)
Most common locationsHilar
Right paratracheal
Necrosis very common
TB lymphadenitis
Case #12
![Page 50: Chest Radiology Interpretation: Findings of Tuberculosisnid]/6a_printable...3 Reading the TB CXR Be systematic! Start centrally and work outwards Normal or abnormal If abnormal, consider](https://reader030.fdocuments.net/reader030/viewer/2022040818/5e62b1b9322283283b745f66/html5/thumbnails/50.jpg)
50
heart <65% thoracic diameter
thymus
Conclusions
Be systematic when reading CXR
Typical TB patterns
Mimics of TB
Get a CT scan when appropriate