Other Lung Neoplasms

Question 1

~ UNDIFFERENTIATED malignant epithelial tumor
~ NO evidence of squamous, glandular, or neuroendocrine differentiation
~ Cells: LARGE nuclei, PROMINENT nucleoli, MODERATE amount of cytoplasm

Answer 1

LARGE CELL CA

Question 2

~ CENTRAL OR PERIPHERAL location
~ Gross: FINGER-LIKE or spherical masses projecting into bronchial lumen (covered by intact mucosa)
~ COLLAR-BUTTON LESION: Penetration of tumor into the peribronchial tissue
~ Histology: Organoid, trabecular, palisading, ribbon, rosette-like arrangements of cells separated by delicate fibrovascular stroma
~ Clinical presentation: Bronchial obstruction and CARCINOID syndrome

Answer 2

BRONCHIAL CARCINOID tumor

***CB-BC
COLLAR-BUTTON lesion — BRONCHIAL CARCINOID tumor

Question 3

MOST COMMON SITE of METASTATIC Neoplasms

Answer 3

LUNG metastasis

Question 4

Most common pattern in Lung metastasis

Answer 4

MULTIPLE DISCRETE lesions (CANNON-BALL lesions)