In this case, uncommon clinical and radiographic findings at presentation, including a well-defined smoothly marginated
purely sclerotic lesion in a middle aged patient without complex periosteal reaction in an extremely rare location, may have contributed to diagnostic uncertainty.
(%) ([dagger]) Prominent nucleoli 141 (94) 25 (25) <.001 Marginated
nucleoli 132 (88) 7 (7) <.001 Multiple nucleoli 96 (64) 0 <.001 Blue-tinged mucinous secretions 78 (52) 0 <.001 Intraluminal crystalloids 61 (40.6) 1 (1) <.001 Intraluminal amorphous eosinophilic material 130 (86.7) 2 (2) <.001 Collagenous micronodules 3 (2) 0 .28 Glomerulations 23 (15.3) 0 <.001 Perineural invasion 33 (22) 0 <.001 3+/4+ retraction clefting 58 (38.6) 7 (7) <.001 Invasion of adipose tissue 1 (0.7) 0 >.99 * Frequency in neoplastic acini only.
(27) Another well marginated
, irregular, CSF density lesion in cerebellopontine angle had features similar to that of epidermoid cyst.
Specific CT scan characteristic of mature mesenteric cystic teratoma is a well marginated
mass with one or more cystic components of varying proportions, frequently processing areas of calcification or fat.
The chest radiograph shows a large left mediastinal soft tissue mass with smoothly marginated
borders and no calcification (Figure 1A).
The typical CT appearance of EMH is smoothly marginated
, soft-tissue masses with homogeneous enhancement along the paravertebral regions.
At CT, it appears as a soft-tissue mass, either sharply marginated
, as most commonly seen in abdominal-wall tumours, or with ill-defined infiltrative margins, as seen in extra-abdominal or mesenteric tumours.
When examined with contact polarized dermoscopy, the papules were white and poorly marginated
Results of a contrast-enhanced computed tomography (CT) scan revealed a tubular, irregularly marginated
structure along the medial aspect of the duodenum, consistent with an inflamed pancreas.
Hypertrophied astrocytes with scant cytoplasm, vesicular nucleus, marginated
chromatin were frequently observed in pairs (Alzheimer type II astrocytes); and also severe vacuolization in the white matter of the brain, cerebellum and brain stem (spongiosis) was found (FIG.
Grossly, lesions are well marginated
. Microscopically, lesions are low to moderately cellular, and consist of bland spindle or stellate-shaped cells in a myxoid to collagenous matrix (Figure 2, B).