9. LCNEC- დიდუჯრედული ნეიროენდოკრინული კიბო
vs
SCLC-წვრილუჯრედული ფილტვის კიბო’
მორფოლოგიური სურათი
LCNEC SCLC
დიდი ზომის უჯრედები მცირე ზომის უჯრედები
დაბალი ბირთვი/ციტოპლაზმის
ფარდობა
მაღალი ბირთვი/ციტოპლაზმის
ფარდობა
მაღალი მიტოზის ხარისხი (>10)
ნეკროზის მაღალი ხარისხი
მჭიდროდ ჩამწკრივებული
უჯრედები
თხელი ციტოპლაზმური შრე
მრავლობითი ბირთვაკები არ არის ბირთვაკები
B, Histologic features of large cell neuroendocrine carcinoma (LCNEC) (×40).
C, Histologic features of small cell lung carcinoma (SCLC) (×40).
D, Histologic features of LCNEC (×400). The tumor cells exhibit neuroendocrine morphologic features with organoid nesting, palisading, and rosettes. Cytologic features include large cell, low nuclear/cytoplasmic ratio, fine chromatin, and nucleoli.
E, Histologic features of SCLC (×400). The tumor cells are small and densely packed and contain scant cytoplasm,
E-cadherin--Loss of E-cadherin function or expression has been implicated in cancer progression and metastasis.[9][10] E-cadherin downregulation decreases the strength of cellular adhesion within a tissue, resulting in an increase in cellular motility. This in turn may allow cancer cells to cross the basement membrane and invade surrounding tissues.[10] E-cadherin is also used by pathologists to diagnose different kinds of breast cancer. When compared with invasivductal carcinoma
B-catenine -β-catenin is a dual function protein, involved in regulation and coordination of cell–cell adhesion and gene transcription. Mutations and overexpression of β-catenin are associated with many cancers, including hepatocellular carcinoma, colorectal carcinoma, lung cancer, malignant breast tumors, ovarian and endometrial cancer.
❚ Differences in immunostaining of cytokeratin (CK)7, CK18, E-cadherin, and β-catenin between large cell neuroendocrine carcinoma (LCNEC) and small cell lung carcinoma (SCLC).
A, CK7 immunostaining in LCNEC showing a staining score of 270 (positive cells, 90%; staining intensity, 3+) (×400).
B, CK7 immunostaining in SCLC showing a staining score of 10 (positive cells, 10%; staining intensity, 1+) (×400).
C, CK18 immunostaining in LCNEC showing a staining score of 240 (positive cells, 80%; staining intensity, 3+) (×400).
D, CK18 immunostaining in SCLC showing a staining score of 40 (positive cells, 40%;
E- immunostaining in LCNEC showing a staining score of 80 (positive cells, 80%; staining intensity, 1+) (×400).
F- E-cadherin immunostaining in SCLC showing a staining score of 10 (positive cells, 10%; staining intensity, 1+) (×400).
G, Membranous β-catenin immunostaining in LCNEC showing a staining score of 200 (positive cells, 100%; staining intensity, 2+) (×400).
H, Membranous β-catenin immunostaining in SCLC showing a staining score of 60 (positive cells, 60%;