Search Results for biopsy

COMBINED NEUROENDOCRINE CARCINOMA Figure 2-30 COMBINED NEUROENDOCRINE CARCINOMA A: Needle core biopsy of a neck mass shows a mixed oropharyngeal nonkeratinizing SCC (left) with tightly defined nests and larger cells with a little more cytoplasm and small cell carcinoma (center and right More about this image found in COMBINED NEUROENDOCRINE CARCINOMA A: Needle core biopsy of a neck mass sho...

LYMPHOEPITHELIAL CARCINOMA Figure 6-66 LYMPHOEPITHELIAL CARCINOMA A,B: The biopsy shows a high nuclear to cytoplasmic ratio, malignant epithelioid cells with vesicular nuclei, and distinct nucleoli with a surrounding lymphoplasmacytic infiltrate. C: Malignant cells are positive for CK5/6. More about this image found in LYMPHOEPITHELIAL CARCINOMA A,B: The biopsy shows a high nuclear to cytopla...

MERKEL CELL CARCINOMA Figure 8-41 MERKEL CELL CARCINOMA A: This punch biopsy demonstrates the deeply infiltrative nature of the tumor, extending into the subcutaneous fat. The adnexal structures are destroyed. B: Large tumor islands are noted in the dermis, with areas of necrosis identified More about this image found in MERKEL CELL CARCINOMA A: This punch biopsy demonstrates the deeply infiltr...

CENTRAL ODONTOGENIC FIBROMA Figure 5-93 CENTRAL ODONTOGENIC FIBROMA Pericoronal biopsies from patients with odontogenic fibroma hamartoma syndrome appear similar to COF histologically. More about this image found in CENTRAL ODONTOGENIC FIBROMA Pericoronal biopsies from patients with odonto...

RHABDOMYOSARCOMA WITH TFCP1 REARRANGEMENT (RMS-TFCP2) Figure 5-196 RHABDOMYOSARCOMA WITH TFCP1 REARRANGEMENT (RMS-TFCP2) A: Soft tissue extension of RMS-TFCP2. A biopsy of the soft tissue was sampled to rule out squamous cell carcinoma. B: The biopsy shows a spindle cell More about this image found in RHABDOMYOSARCOMA WITH TFCP1 REARRANGEMENT (RMS-TFCP2) A: ...

LARYNGEAL AMYLOIDOSIS Figure 6-17 LARYNGEAL AMYLOIDOSIS Low-magnification view of laryngeal amyloidosis on biopsy shows amorphous sheets of densely eosinophilic material, particularly prominent in the upper half of the submucosa. More about this image found in LARYNGEAL AMYLOIDOSIS Low-magnification view of laryngeal amyloidosis on b...

ERYTHROLEUKOPLAKIA Figure 4-17 ERYTHROLEUKOPLAKIA A: Ill-defined area in the anterior floor of the mouth (black arrows) shows carcinoma in situ (CIS) on biopsy. B: CIS presents as speckled leukoplakia with a central granular area. C: Discrete area of leukoplakia (black arrow) with more More about this image found in ERYTHROLEUKOPLAKIA A: Ill-defined area in the anterior floor of the mouth ...

ADRENAL CORTICAL TISSUE IN A DONOR KIDNEY BIOPSY Figure 2-5 ADRENAL CORTICAL TISSUE IN A DONOR KIDNEY BIOPSY A: Uncircumscribed adrenal cortical tissue was present between the renal capsule and a renal subcortical cyst. A small amount of normal kidney is present at left. The empty space More about this image found in ADRENAL CORTICAL TISSUE IN A DONOR KIDNEY BIOPSY A: Uncircumscribed adrena...

POST-FINE NEEDLE ASPIRATION BIOPSY INVOLUTIVE CHANGES IN AN INCIDENTAL ADRENAL CORTICAL ADENOMA Figure 5-15 POST-FINE NEEDLE ASPIRATION BIOPSY INVOLUTIVE CHANGES IN AN INCIDENTAL ADRENAL CORTICAL ADENOMA Incidental nonfunctional adrenal cortical adenoma in a 73-year-old man who had gallstones More about this image found in POST-FINE NEEDLE ASPIRATION BIOPSY INVOLUTIVE CHANGES IN AN INCIDENTAL ADRE...

DIFFERENTIATING NEUROBLASTOMA Figure 11-29 DIFFERENTIATING NEUROBLASTOMA Left adrenal biopsy of 13-month-old boy shows morphologically heterogeneous tumor with varying ganglion cell differentiation, next to areas with neuroblasts, separated by neuropil. More about this image found in DIFFERENTIATING NEUROBLASTOMA Left adrenal biopsy of 13-month-old boy show...

GANGLIONEUROBLASTOMA INTERMIXED Figure 11-30 GANGLIONEUROBLASTOMA INTERMIXED Biopsy of paravertebral mass in 11-year-old girl shows areas of schwannian stroma, intermingled with areas of immature stroma containing cells with varying differentiation toward ganglion cells, but also including More about this image found in GANGLIONEUROBLASTOMA INTERMIXED Biopsy of paravertebral mass in 11-year-ol...

NEUROBLASTOMA METASTATIC TO BONE AND BONE MARROW Figure 11-37 NEUROBLASTOMA METASTATIC TO BONE AND BONE MARROW This trephine biopsy shows extensive involvement by NB, which is even appreciated without immunohistochemistry. More about this image found in NEUROBLASTOMA METASTATIC TO BONE AND BONE MARROW This trephine biopsy show...