[Intraluminal crystalloids in prostatic carcinoma: morphologic and histochemical study]

The histological sections of 302 diagnosed cases of prostate carcinoma were analyzed for intraluminal crystalloids, correlating their presence, number and characteristics with other morphological parameters used for the diagnosis of prostate carcinoma. Evidence of these structures was found in 65 cases (21.5%). The majority developed in malignant glands though they were also found in benign glands adjacent to cancerous foci. Their presence indicates good tumoral differentiation and both their number and shape are dependent on the tumour's histological grade.