Whereas Histopathology is the most objective form of investigation, there are many gray areas in arriving at a definitive diagnosis. On many occasions total lack of clinical information leads to avoidable errors in the diagnosis. The surgical pathologist is advised to keep the cases pending until adequate information is available. On the other hand there are numerous problems in histological interpretation even if the entire clinical information is at hand. This occurs because some lesions have inherent morphological ambiguities and no two surgical pathologists may agree on the correct...