Table 1.

X-Means and Bayesian Information Criterion were utilized to determine the optimal number of acini groupings. Examining the table we can see three distinct types of acini: the smaller acini are less elongated, but more round, whereas larger acini are more elongated and less round. These three clusters demonstrate that as the area of acini increases, elongation will increase, thus decreasing roundness.

Area	Elongation	Perimeter	Roundness	# of Acini in Cluster
1181.58	0.48	118.26	0.84	363 (28%)
1368.51	0.60	135.23	0.66	510 (38%)
2031.45	0.98	200.85	0.43	452 (34%)