PMC7144577_01
Head, roe deer (Capreolus capreolus); a mass is expanding from the rostral aspect of the mandible.
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F1
Macroscopically, the mandibular mass consisted of a 6 x 7 x 4 cm exophytic growth, expanding from the rostral aspect of the mandible and associated with loss of incisors teeth (Figures 1, 2).
Skull, roe deer; the mass is composed of a bony center.
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F2
Macroscopically, the mandibular mass consisted of a 6 x 7 x 4 cm exophytic growth, expanding from the rostral aspect of the mandible and associated with loss of incisors teeth (Figures 1, 2).
Head, roe deer; computed tomography scan showing the contiguity of the bony mass with the mandible and the effacement of the latter by the tumor. This figure uses volume-rendering technique to provide a three-dimensional image of the skull.
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F3
CT examination revealed the presence of both osseous and soft tissue components, and confirmed that the neoplasm was originating from the mandible (Figures 3, 4).
Head, roe deer; computed tomography scan showing the contiguity of the bony mass with the mandible and the effacement of the latter by the tumor. This figure features a single sagittal MPR (multi-planar reconstruction) image through the skull at the level of the tumor.
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F4
CT examination revealed the presence of both osseous and soft tissue components, and confirmed that the neoplasm was originating from the mandible (Figures 3, 4).
Mandibular mass, roe deer (Capreolus capreolus); a proliferative fibrous-osseous mass comprising cancellous bone in the absence of a periosteal layer is elevating the ulcerated labial mucosa; H&E stain.
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F5
Histologically, the mass consisted of an unencapsulated fibro-osseous neoplasm, expanding the oral submucosa and elevating the partially ulcerated mucosa (Figure 5).
Mandibular mass, roe deer; the bony spicules increase in size from the periphery to the center of the mass; H&E stain.
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F6
This cancellous bone mass was not surrounded by a layer of periosteum, consistent with the edge of an expanding fibrous stromal tumor mass (Figure 6).
Mandibular mass, roe deer; embedding the bony spicules were streams and bundles of spindled cells supported by an abundant eosinophilic matrix; H&E stain.
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F7
Embedding the bony spicules were short anastomosing and branching streams and bundles of spindled cells supported by an abundant eosinophilic matrix (Figures 7, 8).
Mandibular mass, roe deer; spicules are lined by osteoblasts and those larger and deeper seated in the mass undergo bone remodeling at their surfaces; H&E stain.
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F8
Embedding the bony spicules were short anastomosing and branching streams and bundles of spindled cells supported by an abundant eosinophilic matrix (Figures 7, 8).
Mandible, roe deer (Capreolus capreolus); cauliflower-like proliferations expanding from the gingival surface and rimming the lower premolars and molars.
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F9
Additionally to the mandibular mass, multiple soft cauliflower-like proliferations (from ca. 3.5 x 2 x 1 cm to 7.5 x 4 x 2 cm) were present over the gingival surface, rimming the lateral and lingual aspects of the upper and lower premolars and molars and extending caudally up to the proximal tract of the pharynx (Figure 9).
Gingival mass, roe deer; cross section of the papillary projection; H&E stain.
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F10
Histologically, the soft oral masses were arranged in papillary elements composed of keratinized pluristratified squamous epithelium with long rete ridges extending into a rich underlying fibrovascular supportive stroma (Figure 10).