Download MBBS Pulmonary Medicine Presentations 4 Lung Cancer Lecture Notes

Download MBBS (Bachelor of Medicine, Bachelor of Surgery) 1st Year, 2nd Year, 3rd Year and Final year Pulmonary Medicine 4 Lung Cancer PPT-Powerpoint Presentations and lecture notes




Lung Cancer

Age-Standardised Ten-Year Survival for Common Cancers in Males and Females, England and Wales, 2010-2011


Reasons why lung cancer survival is stil

variable and poor?

? Late presentation
? Deprivation (not just smoking, but mainly)
? Lack of advocacy & research
? Stigma

? Access to staff,diagnostics and treatment

Symptoms in patients who turn out to have lung

cancer




Red flags are not always reliable but......NICE says

? Any haemoptysis
? Three weeks of unexplained clubbing or.....
? Cough
? Breathlessness
? Chest or shoulder pain
? Weight loss
? Hoarseness
? Chest signs

? Or just because smokes and tired? Unclear. But probably.
? Don't wait for antibiotics to work

Causes and Risk factors of Lung Cancer






Diagnostic Tests

? CXR
? CT Scans
? MRI
? Sputum cytology
? Fibreoptic bronchoscopy
? Transthoracic fine needle aspiration
Laboratory Tests

?Blood Tests
*CBC-to check red/white blood cell & platelets

-to check bone marrow and organ function

*Blood Chemistry Test-to assess how organs

are functioning such as liver and kidney

?Biopsy-to determine if the tumor is cancer or not


-to determine the type of cancer
-to determine the grade of cancer (slow
or fast)

Biopsy


Endoscopy

? Bronchoscopy

? Mediastinoscopy

? VATS (video assisted thoracoscopic surgery)



Bronchoscopy
Mediastinoscopy

VATS (video assisted thoracoscopic surgery)


DIAGNOSTIC WORKUP

? History: metastasis symptoms

? PE: H & N lymph nodes

? Chest X-ray

? CT: the most valuable radiologic study for evaluation,

staging, and therapeutic planning of lung cancer

? MRI: mediastninum or paravetebral region

? Bone scans: stage II before curative therapy




? PET influenced radiation delivery in 65% for definitive

radiotherapy (Kalff et al.).

? Brain CT scan: small cell carcinoma.

? Pulmonary function tests: ability to undergo surgical

resection or withstand irradiation

? Sputum cytology: 20% to 30% sensitivity

? Bronchoscopic examination: 90% positive

? CT-guided Bx: 95% positive

? Bx: Primary tumor lesion, scalene node
Pathology

? Sputum cytology: 20% to 30% sensitivity

? Bronchoscopic examination: 90% positive

? CT-guided Bx: 95% positive

? Bx: Primary tumor lesion, scalene node

Incidence

Taiwan (TCOG) USA

NSCLC

85-88 %

80 %

SCLA

12-15 %

20 %




Lung Cancer Re-cap

Small Cell Lung Cancer

Non-Small-Cell Lung Cancer

Squamous cel

Adenocarinoma

Squamous cell carcinoma

? Moderate to poor differentiation
? makes up 30-40% of all lung cancers
? more common in males
? most occur centrally in the large bronchi
? Uncommon metastasis that is slow effects the liver, adrenal glands and lymph

nodes.

? Associated with smoking
? Not easily visualized on xray (may delay dx)
? Most likely presents as a Pancoasts tumor


Adenocacinoma

? Increasing in frequency. Most common type of Lung cancer (40-50% of all lung

cancers).

? Clearly defined peripheral lesions (RLL lesion)
? Glandular appearance under a microscope
? Easily seen on a CXR
? Can occur in non-smokers
? Highly metastatic in nature

? Pts present with or develop brain, liver,

adrenal or bone metastasis

Large cell carcinomas

? makes up 15-20% of all lung cancers
? Poorly differentiated cells
? Tends to occur in the outer part (periphery) of lung, invading sub-segmental

bronchi or larger airways

? Metastasis is slow BUT
? Early metastasis occurs to the kidney, liver organs as well as the adrenal glands
TMN Staging system for Lung Cancer

T= Tumors : tumor size, (local

invasion)


N= Node : node involvement

(size and type)

M= Metastasis : general

involvement in organs and

tissues

Lung Cancer Staging Continued

? T: Tx, T0, Tis, T1-T4 (T3-tumors greater

than 7cm, T4 is a tumor of any size)

? N: N0, N1, N2, N3
? M: M0, M1a, M1b
Stage grouping (AJCC 2002)

T1 T2 T3 T4

N0 IA IB I B I IB

N1 I A I B I IA I IB

N2 I IA I IA I IA I IB

N3 I IB I IB I IB I IB

Man, age: 76, cough and BWL
Man, age: 72, LLL

Smal cell lung Ca

Limited stage
Woman, age: 68

SVC syndrome

Treatment

? Surgery is preferred radical option

? `Resectable' versus `operable'

? Radical RT (or SBRT) should be considered even if patient not fit for surgery

(`operable')

? Performance status at diagnosis is crucial:

Grade

Explanation of activity

0

Fully active, able to carry on all pre-disease performance without restriction

1

Restricted in physically strenuous activity but ambulatory and able to carry out work of a light or

sedentary nature, e.g., light house work, office work

2

Ambulatory and capable of all selfcare but unable to carry out any work activities. Up and about more

than 50% of waking hours

3

Capable of only limited selfcare, confined to bed or chair more than 50% of waking hours

4

Completely disabled. Cannot carry on any selfcare. Totally confined to bed or chair

5

Dead
Medical Management

?The three main cancer treatments

are: *surgery (lung resections)

*radiation therapy

*chemotherapy

?Other types of treatment that are

used to treat certain cancers are

hormonal therapy, biological therapy,

Immunotherapy, targeted

chemotherapy or stem cell transplant.

Prognostic Factors

?The best estimate on how a patient will do based on:

*type of cancer cells
*grade of the cancer
*size or location of the tumor
*stage of the cancer at the time of diagnosis
*age of the person
*gender
*results of blood or other tests
*a persons specific response to treatment
*overall health and physical condition

This post was last modified on 08 April 2022