Microscopic Growth Pattern of Metastatic Colorectal Carcinomas, Morphological Findings of the Non-Neoplastic Liver,...

Area of Science:

• Oncology
• Pathology
• Gastroenterology

Background:

• Prognosis in metastatic colorectal carcinoma is influenced by various factors, including tumor growth patterns.
• Histopathological growth patterns of liver metastases significantly affect patient outcomes.

Purpose of the Study:

• To investigate the prognostic significance of metastatic tumor histopathological growth patterns.
• To analyze morphological findings in the non-neoplastic liver surrounding metastases.
• To correlate these findings with survival in metastatic colorectal carcinoma patients.

Main Methods:

• Re-examination of hematoxylin and eosin-stained liver tumor slides.
• Evaluation of histopathological diagnosis, growth pattern, and peritumoral changes (lymphocytic infiltration, steatosis, cholestasis, ductular reaction).

Main Results:

• Tumor growth patterns observed: replacement (47%), desmoplastic (37%), and pushing (16%).
• A significant difference in overall survival was found between desmoplastic and replacement growth patterns (P=.011).
• Patients with replacement growth patterns exhibited shorter survival periods.

Conclusions:

• Histopathological growth patterns of liver metastases are a promising prognostic parameter for colorectal carcinoma.
• Incorporating growth pattern analysis into routine pathology reports is recommended due to its prognostic value and ease of evaluation.
• This parameter requires no additional equipment or cost and can be routinely assessed by pathologists.