case_images: PMC4451677_01
case_images: Extraoral photograph showing facial asymmetry with a smooth surfaced swelling on the right lower side of the face
case_images: JOMFP-19-92-g001.jpg
case_images: PMC4451677_01_JOMFP-19-92-g001.jpg
case_images: F1
case_images: The tumor was hard and elastic and had a smooth surface [Figure 1].
case_images: MRI - STIR image showing hypointense areas suggestive of fat
case_images: JOMFP-19-92-g002.jpg
case_images: PMC4451677_01_JOMFP-19-92-g002.jpg
case_images: F2
case_images: T1 with small fatty component and cystic focus [Figure 2]. There was no fat plane with adjacent tongue suggesting its involvement. The right sub mandibular gland was abutted.
case_images: Hemangiopericytoma-like areas (black arrow) admixed with areas of mature adipocytes (red arrow) (H&E stain, x40)
case_images: JOMFP-19-92-g003.jpg
case_images: PMC4451677_01_JOMFP-19-92-g003.jpg
case_images: F3
case_images: HPC like areas admixed with mature adipocytes [Figure 3]. However, no lipoblasts were seen.
case_images: Typical staghorn pattern with proliferating lesional cells (H&E stain, x200)
case_images: JOMFP-19-92-g004.jpg
case_images: PMC4451677_01_JOMFP-19-92-g004.jpg
case_images: F4
case_images: The intervascular spaces were occupied by monomorphous plump spindle cells which had round to oval nuclei with scant to moderate cytoplasm, the cell borders were indistinct [Figure 4].
case_images: Reticulin stain showed distinctive reticulin pattern and each pericyte is surrounded by reticulin fibers (Reticulin stain, x100)
case_images: JOMFP-19-92-g005.jpg
case_images: PMC4451677_01_JOMFP-19-92-g005.jpg
case_images: F5
case_images: Immunohistochemical staining demonstrated that the neoplastic cells were strongly positive for reticulin [Figure 5] and negative for CD 99 [Figure 6], Bcl-2 [Figure 7], S-100 [Figure 8], Pancytokeratin [Figure 9], Desmin [Figure 10], CD34 [Figure 11] and smooth muscle actin (SMA) [Figure 12].
case_images: Immunohistochemistry revealing CD99 negativity (IHC stain, x100)
case_images: JOMFP-19-92-g006.jpg
case_images: PMC4451677_01_JOMFP-19-92-g006.jpg
case_images: F6
case_images: Immunohistochemical staining demonstrated that the neoplastic cells were strongly positive for reticulin [Figure 5] and negative for CD 99 [Figure 6], Bcl-2 [Figure 7], S-100 [Figure 8], Pancytokeratin [Figure 9], Desmin [Figure 10], CD34 [Figure 11] and smooth muscle actin (SMA) [Figure 12].
case_images: Immunohistochemistry revealing Bcl-2 negativity (IHC stain, x100)
case_images: JOMFP-19-92-g007.jpg
case_images: PMC4451677_01_JOMFP-19-92-g007.jpg
case_images: F7
case_images: Immunohistochemical staining demonstrated that the neoplastic cells were strongly positive for reticulin [Figure 5] and negative for CD 99 [Figure 6], Bcl-2 [Figure 7], S-100 [Figure 8], Pancytokeratin [Figure 9], Desmin [Figure 10], CD34 [Figure 11] and smooth muscle actin (SMA) [Figure 12].
case_images: Immunohistochemistry revealing S-100 negativity with positivity in fat containing cells (IHC stain, x100)
case_images: JOMFP-19-92-g008.jpg
case_images: PMC4451677_01_JOMFP-19-92-g008.jpg
case_images: F8
case_images: Immunohistochemical staining demonstrated that the neoplastic cells were strongly positive for reticulin [Figure 5] and negative for CD 99 [Figure 6], Bcl-2 [Figure 7], S-100 [Figure 8], Pancytokeratin [Figure 9], Desmin [Figure 10], CD34 [Figure 11] and smooth muscle actin (SMA) [Figure 12].
case_images: Immunohistochemistry revealing Pan cytokeratin negativity (IHC stain, x100)
case_images: JOMFP-19-92-g009.jpg
case_images: PMC4451677_01_JOMFP-19-92-g009.jpg
case_images: F9
case_images: Immunohistochemical staining demonstrated that the neoplastic cells were strongly positive for reticulin [Figure 5] and negative for CD 99 [Figure 6], Bcl-2 [Figure 7], S-100 [Figure 8], Pancytokeratin [Figure 9], Desmin [Figure 10], CD34 [Figure 11] and smooth muscle actin (SMA) [Figure 12].
case_images: Immunohistochemistry revealing Desmin negativity (IHC stain, x100)
case_images: JOMFP-19-92-g010.jpg
case_images: PMC4451677_01_JOMFP-19-92-g010.jpg
case_images: F10
case_images: Immunohistochemical staining demonstrated that the neoplastic cells were strongly positive for reticulin [Figure 5] and negative for CD 99 [Figure 6], Bcl-2 [Figure 7], S-100 [Figure 8], Pancytokeratin [Figure 9], Desmin [Figure 10], CD34 [Figure 11] and smooth muscle actin (SMA) [Figure 12].
case_images: Immunohistochemistry revealing CD34 negativity in lesional cells, positivity in endothelial cells of vessels (IHC stain, x100)
case_images: JOMFP-19-92-g011.jpg
case_images: PMC4451677_01_JOMFP-19-92-g011.jpg
case_images: F11
case_images: Immunohistochemical staining demonstrated that the neoplastic cells were strongly positive for reticulin [Figure 5] and negative for CD 99 [Figure 6], Bcl-2 [Figure 7], S-100 [Figure 8], Pancytokeratin [Figure 9], Desmin [Figure 10], CD34 [Figure 11] and smooth muscle actin (SMA) [Figure 12].
case_images: Immunohistochemistry revealing Smooth muscle actin negativity in lesional cells and positivity in vessel walls (arrow), (IHC stain, x100)
case_images: JOMFP-19-92-g012.jpg
case_images: PMC4451677_01_JOMFP-19-92-g012.jpg
case_images: F12
case_images: Immunohistochemical staining demonstrated that the neoplastic cells were strongly positive for reticulin [Figure 5] and negative for CD 99 [Figure 6], Bcl-2 [Figure 7], S-100 [Figure 8], Pancytokeratin [Figure 9], Desmin [Figure 10], CD34 [Figure 11] and smooth muscle actin (SMA) [Figure 12].