International Histological Classification of Tumours:

WHO histological classification of odontogenic tumours

WHO histological classification of neural tumours

WHO histological classification of testis tumours

Germ cell tumours are the most frequent and important neoplasms at this site. They mainly affect young males and their incidence is steadily increasing in affluent societies. In several regions, including North America and Northern Europe, they have become the most common cancer in men aged 15 44. There is circumstantial epidimiological evidence that the steep increase in new cases is associate...

WHO histological classification of oesophageal tumours

Squamous cell carcinoma In Western countries, oesophageal carcinomas with squamous cell differentiation typically arise after many years of tobacco and alcohol abuse. They frequently carry G:C >T:A mutations of the TP53 gene. Other causes include chronic mucosal injury through hot beverages and malnutrition, but the very high incidence rates observed in Iran and some African and Asian regions r...

WHO histological classification of tumours of the small intestine