Figure 5.

The tumor was generally crystal-deficient and only very rare, slightly elongated membrane-bound crystalloid inclusions with a vague lattice-like architecture were found. The spectrum of these crystalloid inclusions is demonstrated here in panels A-E. As shown in A and C these inclusions were sometimes seen in close association with electron dense granules. The “classic” rhomboid crystals with lattice-like architecture were not identified (illustrated from a different case in F for comparison to A-E).