General Thoracic 3.0 Flashcards
2017 Lung Cancer Staging
T0 –
T0 – no primary tumor
T1a (mi) – Minimally invasive adenoma
T1a ss –superfical spreading in central airways (any size but confined to the tracheal or bronchial wall)
T1a Tumor =< 1cm
T1b tumor > 1 but =< 2 cm
T1c Tumor > 2 but =< 3cm
Lung Cancer 2017 Staging
T1a (mi) –
Lung Cancer 2017 Staging
T1a (mi) – Minimally invasive adenoma
Lung Cancer 2017 Staging
T1a ss
Lung Cancer 2017 Staging
T1a ss:
superfical spreading in central airways
(any size but confined to the tracheal or bronchial wall)
Lung Cancer 2017 Staging
T1a
Lung Cancer 2017 Staging
T1a Tumor =< 2cm
Lung Cancer 2017 Staging
T1b
tumor > 2, but =< 3cm
Lung Cancer 2017 Staging
T1c?
Tumor > 2 but =< 3cm
ACOSOG Z0050 trial
Trial purpose
Trial Conclusion
ACOSOG Z0050 trial (2011)
- Examined the utility of PET for staging patents with potentially operable NSCLC
- The authors concluded that their study validated that mediastinoscopy (prior to the widespread use of EBUS) is the gold standard for mediastinal staging when compared to the CT and/or PET interpretations.
- Therefore: N2 disease should be confirmed pathologically.
Specificty of PET for N2/N3 disease ?
ACOSOG Z0050 trial (2011)
PET for N2/N3
Specificity: 84%
PPV of PET for mediastinal lymph nodes
ACOSOG Z0050 trial (2011)
The PPV (positive predictive value) of PET in that study was only 56%.
Comparison of VATS vs. Thoracotomy
Mortality
No differences in mortality
Comparison of VATS vs. Thoracotomy
Respiratory issues:
Perioperative respiratory complications (12.2% vs. 7.6%, p=0.0001)
Comparison of VATS vs Thoracotomy
Atrial arrhythmia:
Comparison of VATS vs Thoracotomy
Atrial arrhythmia:
atrial arrhythmias (11.5% vs. 7.3%, p=0.0004) were higher in the thoracotomy group.
Comparison of VATS vs Thoracotomy
Lymph Node Status and Up Staging
Mediastinal and hilar lymph node staging
Mediastinal Lymph nodes
no difference in the number of mediastinal stations sampled or of upstaging of mediastinal nodes (5.0% with thoracotomy vs. 4.9% with VATS; p = 0.52).
Peribronchial lymph nodes
There was, however, a difference in the rates of hilar and peribronchial upstaging for N1 disease favoring thoracotomy (9.3% vs. 6.7%, p<0.001).
This was assumed to indicate variability in the completeness of hilar and peribronchial lymph node dissection during the VATS cases.
Cameron’s Ulcers
- Patients with a type III hernia may have an associated unexplained anemia.
-
Aetiology
- The blood loss is from the stomach moving up and down through the hernia ring leading to irritation of the gastric mucosa and subsequent bleeding. This may or may not be seen on endoscopy. These erosions are referred to as Cameron’s erosions or Cameron’s ulcers.
-
Epidemiology
- It occurs in 20%-30% of patients with large type III hernias.
-
Work up
- A full investigation of other sources of gastrointestinal blood loss is warranted. This usually involves a colonoscopy and CT scan to rule out other causes of bleeding.
Incidence of Cameron’s ulcer
-
Epidemiology
- It occurs in 20%-30% of patients with large type III hernias.
Quantification of AFB and B-HCG in young patient with anterior mediastinal mass
? how much is too high?
Any elevation of alpha-fetoprotein (αFP) and elevation of beta human chorionic gonadotropin(βhCG) elevation > 100 mIU/mL is diagnostic for a primary mediastinal nonseminomatous germ cell cancer.
IHC staining for germ cell tumors
ALK
- Eighty percent of seminomatous germ cell cancers stain positive for placental alkaline phosphatase, which is also diagnostic.
what is more comminon
Seminoma or non-seminoma
Seminoma
what has a better prognosis ? seminoma or non-seminoma
Seminoma - 5 year survival 80%
Non seminoma 50-60%
Most common malignant germ cell tumor in the mediastinum
Seminoma
###
A.Seminoma
1.Epidemiology
- Frequency of mediastinum
- Gender prevlance
- Age?
###
- Most common malignant germ cell tumor in the mediastinum
- Occurs almost exclusively in Males
- 30’s – 40s
###
Seminoma
Diagnosis
Lab and Imaging ?
###
a) Serum Tumor markers are slightly elevated.
b) CT: reveal characteristically large, homogenous math with smooth boaders
c) Eighty percent of seminomatous germ cell cancers stain positive for placental alkaline phosphatase, which is also diagnostic.
###
Seminoma
Treatment
- Radiation therapy: traditionally the primary treatment.
- Cisplatin-based chemotherapy is used for metastatic disease
- Surgical resection is reserved for any residual disease that is manifested as the local growth of a residual mass.
Non-seminomatous germ cell tumors
Epidemiology
Age and gender
###
A.Non-seminomatous germ cell tumors
Epidemiology
a)most often in young men 20 to 30 years old
###
Non-seminomatous germ cell tumors
pathologic subtypes
###
(1) yolk sac carcinoma
(2) embryonal carcinoma
(3) choriocarcinoma
###
Most common side effects to Cisplatin
The most common side effects of cisplatin are:
nausea and vomiting
arthralgias
nephrotoxicity
sensory polyneuropathy
electrolyte abnormalities
(hypomagnesemia, hypocalcemia, hypokalemia), ototoxicity,
anemia and leukopenia (usual onset after 10 days, with nadir between 14-23 days, and recovery after 21-39 days).
Bronchopleural Fistula
Epidemiology
- incidence of bronchopleural fistula (BPF)following pneumonectomy: 0.8% to 15%?
Bronchopleural Fistula
Epidemiology
- incidence of bronchopleural fistula (BPF)following pneumonectomy: 0.8% to 15%
*
Bronchopleural Fistula
Risk factors?
Pneumonectomy
Neoplastic disease
Right >> Left
neoadjuvant chemotherapy or radiation
hypoalbuminemia
long residual bronchial stump
more severe chronic obstructive lung disease
the need for postoperative mechanical ventilation.
B
CTA findings consistent with chronic pulmonary HTN
- A CT-determined main pulmonary artery diameter greater than 29 mm predicts PHTN with a sensitivity of 87% and specificity of 89%.
- The specificity reaches 100% if additionally an artery-to-bronchial ratio greater than 1:1 is found at the segmental level in at least three lobes.