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Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 12
Publisher: American Registry of Pathology
Published: 01 August 2022
DOI: 10.55418/9781933477220-03
ISBN-10: 1-933477-22-9
ISBN: 978-1-933477-22-0
... Developmental Potential Age Anatomic Sites 0 Parasitic twin; included twin; occasionally, on aneuploidization, YST, and STM Prenatally or at birth Sites where conjoined twins are attached: sacral region, retroperitoneum, abdomen, neck, face, orbit, and other rare sites I (Immature) teratoma...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 12
Publisher: American Registry of Pathology
Published: 01 August 2022
DOI: 10.55418/9781933477220-08
ISBN-10: 1-933477-22-9
ISBN: 978-1-933477-22-0
... in the epididymis and adjacent structures. This tumor is also called retinal anlage tumor, melanotic hamartoma, and melanotic progonoma (when in the jaws). General and Clinical Features. This rare tumor most commonly occurs in the head and neck region, typically in the maxillary alveolus...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 12
Publisher: American Registry of Pathology
Published: 01 August 2022
DOI: 10.55418/9781933477220-02
ISBN-10: 1-933477-22-9
ISBN: 978-1-933477-22-0
...; the connection with the nucleus is referred to as the neck ( 37 ). In the Sb2 stage, the nucleus is eccentrically positioned and begins to elongate, with the area covered by the acrosomal cap closely applied to its membrane ( fig. 2-35 ). The axoneme or flagellum continues to elongate. SPERMATID, TYPE SB2 Figure...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 12
Publisher: American Registry of Pathology
Published: 01 August 2022
DOI: 10.55418/9781933477220-05
ISBN-10: 1-933477-22-9
ISBN: 978-1-933477-22-0
... is mostly inconspicuous, but may be seen in foci corresponding to the normal proliferative zones of organoid structures, including the basal layer of skin, the base of intestinal crypts, and in the isthmic zone (located between the pit and neck regions) of gastric oxyntic mucosa. It is also found in rare...
Images
FEMORAL STRESS FRACTURE  Frontal radiograph of the hip demonstrates linear ...
Published: 01 October 2021
FEMORAL STRESS FRACTURE Figure 18-9 FEMORAL STRESS FRACTURE Frontal radiograph of the hip demonstrates linear sclerosis of the medial femoral neck (arrow), consistent with a stress fracture. The medial femoral neck is a common location for femoral stress fractures in runners. More
Images
FIBROUS DYSPLASIA  Axial CT image of the hip shows fibrous dysplasia with c...
Published: 01 October 2021
FIBROUS DYSPLASIA Figure 9-8 FIBROUS DYSPLASIA Axial CT image of the hip shows fibrous dysplasia with cartilaginous areas involving the femoral neck. Chondroid matrix mineralization with rings and arcs pattern is present. More
Images
<em>BCOR</em>-REARRANGED SARCOMA  Left: Frontal radiograph of the h...
Published: 01 October 2021
BCOR-REARRANGED SARCOMA Figure 11-23 BCOR-REARRANGED SARCOMA Left: Frontal radiograph of the hip shows a lytic lesion involving the femoral neck and extending into the lesser and greater trochanters causing pathologic fracture. Above: Axial T2-weighted MRI of the proximal femur shows an associated large soft tissue mass. More
Images
MULTIPLE OSTEOCHONDROMAS  Coronal reformatted CT image of the pelvis in a p...
Published: 01 October 2021
MULTIPLE OSTEOCHONDROMAS Figure 6-21 MULTIPLE OSTEOCHONDROMAS Coronal reformatted CT image of the pelvis in a patient with hereditary multiple osteochondromas shows a dominant pedunculated osteochondroma arising from the left iliac bone with a calcified cartilage cap. A smaller osteochondroma ari... More
Images
SCLEROSING EPITHELIOID FIBROSARCOMA  A: Frontal radiograph of the hip shows...
Published: 01 October 2021
SCLEROSING EPITHELIOID FIBROSARCOMA Figure 8-63 SCLEROSING EPITHELIOID FIBROSARCOMA A: Frontal radiograph of the hip shows lytic lesion with well-defined nonsclerotic margins in the femoral neck. There is subtle sclerosis extending along the proximal and medial portion of the medullary cavity. B... More
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 9
Publisher: American Registry of Pathology
Published: 01 November 2021
DOI: 10.55418/9781933477176-3
ISBN-10: 1-933477-17-2
ISBN: 978-1-933477-17-6
... is a triangular area along the posterior aspect with a smooth surface and the ureter orifices at the upper lateral corners. This part of the bladder is relatively fixed in contrast to the remaining free walls. The neck region is fixed in place by the pubovesical ligaments in females and by the puboprostatic...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 9
Publisher: American Registry of Pathology
Published: 01 November 2021
DOI: 10.55418/9781933477176-4
ISBN-10: 1-933477-17-2
ISBN: 978-1-933477-17-6
... by the utricle (uterus masculinus) and terminal portions of the ejaculatory ducts, which together form the verumontanum (colliculus seminalis). Depending on its location, the male urethra is surrounded by the musculature of the bladder neck, the prostate gland, the urogenital diaphragm (external sphincter...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 9
Publisher: American Registry of Pathology
Published: 01 November 2021
DOI: 10.55418/9781933477176-2
ISBN-10: 1-933477-17-2
ISBN: 978-1-933477-17-6
... mutations in genes from the succinate dehydrogenase family of genes develop these tumors and are also prone to develop pheochromocytoma, head and neck and other paragangliomas, and type 2 gastrointestinal stromal tumors. In a study of 358 patients from 160 kindreds, 12 patients developed renal tumors...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 8
Publisher: American Registry of Pathology
Published: 01 October 2021
DOI: 10.55418/9781933477138-09
ISBN-10: 1-933477-13-X
ISBN: 978-1-933477-13-8
... areas involving the femoral neck. Chondroid matrix mineralization with rings and arcs pattern is present. FIBROUS DYSPLASIA Figure 9-9 FIBROUS DYSPLASIA Excised femur with pathologic fracture caused by severe polyostotic fibrous dysplasia. The lesions are well demarcated and range from tan-white...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 8
Publisher: American Registry of Pathology
Published: 01 October 2021
DOI: 10.55418/9781933477138-18
ISBN-10: 1-933477-13-X
ISBN: 978-1-933477-13-8
... FRACTURE Lateral radiograph of the leg shows subtle periosteal reaction (arrow) from healing stress fracture. FEMORAL STRESS FRACTURE Figure 18-9 FEMORAL STRESS FRACTURE Frontal radiograph of the hip demonstrates linear sclerosis of the medial femoral neck (arrow), consistent with a stress fracture...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 8
Publisher: American Registry of Pathology
Published: 01 October 2021
DOI: 10.55418/9781933477138-17
ISBN-10: 1-933477-13-X
ISBN: 978-1-933477-13-8
... . Head Neck Pathol   2015 ; 9 : 32 - 8 . 21. Antonescu   CR , Zhang   L , Chang   NE , et al .  EWSR1-POU5F1 fusion in soft tissue myoepithelial tumors. A molecular analysis of sixty-six cases, including soft tissue, bone, and visceral lesions, showing common involvement of the EWSR1...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 8
Publisher: American Registry of Pathology
Published: 01 October 2021
DOI: 10.55418/9781933477138-06
ISBN-10: 1-933477-13-X
ISBN: 978-1-933477-13-8
... reformatted CT image of the pelvis in a patient with hereditary multiple osteochondromas shows a dominant pedunculated osteochondroma arising from the left iliac bone with a calcified cartilage cap. A smaller osteochondroma arises from the right iliac bone. Widening of bilateral femoral necks with sessile...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 8
Publisher: American Registry of Pathology
Published: 01 October 2021
DOI: 10.55418/9781933477138-04
ISBN-10: 1-933477-13-X
ISBN: 978-1-933477-13-8
... osteoma can arise in any bone in the body; 65 to 85 percent develop in the long bones of the extremities, 20 percent in the phalanges, and 10 percent in the spine ( 11 ). The femoral neck is the single most frequent anatomic site. In the upper extremities, the tumor involves the bones around the elbow...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 8
Publisher: American Registry of Pathology
Published: 01 October 2021
DOI: 10.55418/9781933477138-11
ISBN-10: 1-933477-13-X
ISBN: 978-1-933477-13-8
... is at least focally seen in most cases. BCOR-REARRANGED SARCOMA Figure 11-23 BCOR-REARRANGED SARCOMA Left: Frontal radiograph of the hip shows a lytic lesion involving the femoral neck and extending into the lesser and greater trochanters causing pathologic fracture. Above: Axial T2...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 8
Publisher: American Registry of Pathology
Published: 01 October 2021
DOI: 10.55418/9781933477138-08
ISBN-10: 1-933477-13-X
ISBN: 978-1-933477-13-8
... of the hip shows lytic lesion with well-defined nonsclerotic margins in the femoral neck. There is subtle sclerosis extending along the proximal and medial portion of the medullary cavity. B: Coronal T1-weighted MRI shows low signal intensity of the tumor. C: Axial CT image demonstrates a lytic lesion...
Book Chapter
Series: Atlases of Tumor and Non-Tumor Pathology, Series 5
Volume: 7
Publisher: American Registry of Pathology
Published: 01 September 2021
DOI: 10.55418/9781933477121-1
ISBN-10: 1-933477-12-1
ISBN: 978-1-933477-12-1
... or plaques with a stuck-on appearance. They may be solitary or multiple, with a predilection for the head and neck, trunk, and skin folds of middle-aged to elderly adults. An eruptive onset of multiple seborrheic keratoses in the setting of an internal malignancy is known as the Leser-Trélat sign ( 8...