Rhabdomyosarcoma tumour primitive neuroectodermal tumor in infancy. Medical search. Frequent questions

Melanotic neuroectodermal tumor of infancy is a very rare oral cavity tumor that is seen in patients usually at or around birth. (wikipedia.org)
Consider clinical, radiographic, laboratory, and histologic findings when establishing a proper differential diagnosis for melanotic neuroectodermal tumor of infancy (MNTI). (medscape.com)
Neville B, Damm D, Allen C. Melanotic Neuroectodermal Tumor of Infancy. (medscape.com)
Melanotic neuroectodermal tumor of infancy--a neoplasm of neural crese origin. (medscape.com)
Cutler LS, Chaudhry AP, Topazian R. Melanotic neuroectodermal tumor of infancy: an ultrastructural study, literature review, and reevaluation. (medscape.com)

The histologic appearance of MNTI is usually that of a small, dark, cell neoplasm suggestive of neuroblastoma, rhabdomyosarcoma, Ewing sarcoma, lymphoma, desmoplastic small round cell tumor, and peripheral primitive neuroectodermal tumor. (medscape.com)
The differential diagnosis of a malignant effusion is accordingly broad, especially for the small round blue cell tumors that includes not only mesenchymal tumors, but also non-mesenchymal tumors, such as neuroblastoma and Wilms tumor. (cytojournal.com)
Other rare non-epithelial malignancies that may be encountered in effusion cytology include neuroblastoma, Wilms tumor, and metastatic brain tumors. (cytojournal.com)
Of these, Wilms' tumor and neuroblastoma are the most common tumors, where Wilms' tumor represents about 92% of renal masses in children. (bvsalud.org)

Patients with Beckwith-Wiedemann syndrome and Denys-Drash syndrome have an increased risk of developing Wilms tumor ( 5 , 6 ). (abdominalkey.com)

It is important in this age group to exclude other tumors that can have a similar appearance, such as rhabdomyosarcoma, lymphoma, Ewing sarcoma (primitive neuroectodermal tumor), or even a melanoma (although they are very very rare in infants). (wikipedia.org)

While most tumors metastatic to the serous membranes are of epithelial origin, cytologists should be aware that non-epithelial neoplasms can also cause malignant effusions including sarcomas, melanomas, germ cell tumors, and, more rarely, brain tumors. (cytojournal.com)
Common non-epithelial neoplasms that may cause malignant effusions include malignant melanoma, sarcomas, and other neoplasms including germ cell tumors [ Figure 1 ]. (cytojournal.com)
In clinical practice, she concentrates on germ cell tumors, while her epidemiologic research primarily focuses on colorectal cancer screening and prevention. (dana-farber.org)
and (3) treatment of germ cell tumors in pediatric patients. (dana-farber.org)
In clinical care, Dr. Frazier is the national expert on germ cell tumors in pediatric patients and oversees the care of these patients referred to DFCI. (dana-farber.org)
In addition, she is cochair of two national protocols that opened in 1999 for the treatment of low-risk and high-risk pediatric germ cell tumors and chair of the COG Germ Cell subcommittee in COG Rare Tumors. (dana-farber.org)

Most tumors metastatic to the serous membranes are of epithelial origin. (cytojournal.com)
She underwent disease reevaluation 4 weeks after the completion of radiation, which showed improvement in the spinal tumor and no new metastatic lesions. (surgicalneurologyint.com)

More than 80% of renal tumors of childhood are Wilms tumor (nephroblastoma) ( 1 , 2 ). (abdominalkey.com)
Non-Wilms' renal tumors, rhabdoid tumors, and clear cell sarcoma of the kidney (CCSK) are uncommon. (bvsalud.org)
CCSK constitutes approximately 3% of all malignant renal tumors in childhood. (bvsalud.org)

Neonatal Wilms tumor is rare. (abdominalkey.com)
Most Wilms tumor occurs in children between the ages of 2 and 4 years ( 3 ). (abdominalkey.com)
Wilms tumor may be associated with hemihypertrophy and aniridia and with genital anomalies, such as cryptorchidism and hypospadias ( 5 ). (abdominalkey.com)
Wilms tumor is rare in adults ( 3 ). (abdominalkey.com)
Wilms tumor is believed to arise from embryonic tissues called nephrogenic rests that fail to undergo normal involution ( 7 ). (abdominalkey.com)
The development of Wilms tumor has been linked to mutations of the WT1 and WT2 genes located on chromosome 11 at 11p13 and 11p15.5, respectively ( 8 , 9 ). (abdominalkey.com)
Wilms tumor often is greater than 5 cm in diameter, with an average size of 10 cm ( 3 ). (abdominalkey.com)
In this report, we present a child presenting with a huge renal mass consistent with Wilms' tumor on computed tomography and initial biopsy. (bvsalud.org)
Herein, we report a case of bilateral Wilms tumor (BWT) in a patient with a concurrent horseshoe kidney and left duplex kidney, which had not been previously reported. (bvsalud.org)
Some generalized overgrowth syndromes are associated with an increased risk of Wilms tumor (WT). (bvsalud.org)
In the literature and our cohort, six cases of Wilms tumor/nephrogenic rests (0.12%) and four cases of other cancers have been reported out of 483 proven PIK3CA patients, in particular the p. (bvsalud.org)
OBJECTIVE: Immunohistochemical expression of P53 protein is so closely related to status of mutation of P53 gene which is tightly linked with pathogenesis of nephroblastoma or Wilms tumor. (bvsalud.org)

Immature teratoma is the malignant counterpart of the mature teratoma and contains immature tissues which typically show primitive or embryonal neuroectodermal histopathology. (mdwiki.org)

The same age differential is noted with respect to the more common odontogenic tumors (eg, ameloblastoma, odontoma, adenomatoid odontogenic tumor, calcifying epithelial odontogenic tumor, ameloblastic fibroma, odontogenic myxoma, odontogenic fibroma). (medscape.com)
Diagnosing non-epithelial malignancies in effusion specimens based entirely upon their cytomorphologic features is difficult because these neoplasms often exhibit considerable morphological overlap and their cytomorphology can differ from the original tumor. (cytojournal.com)
The classification of epithelial tumors of the kidney has in particular undergone substantial progress in the last two decades with major contributions from genetic typing of renal cell carcinomas (RCCs). (abdominalkey.com)

The first section will cover those tumors that characteristically are associated with the pediatric population. (abdominalkey.com)
Atypical teratoid/rhabdoid tumor (AT/RT) is an aggressive neoplasm that constitutes approximately 6% of pediatric central nervous system (CNS) tumors. (surgicalneurologyint.com)
Evaluation of prevalence and outcomes of serial tyrosine kinase inhibitor use in pediatric patients with advanced solid tumors. (dana-farber.org)

Li L, Patel M, Nguyen HS, Doan N, Sharma A, Maiman D. Primary atypical teratoid/rhabdoid tumor of the spine in an adult patient. (surgicalneurologyint.com)
Atypical teratoid/rhabdoid tumor (AT/RT) is an aggressive neoplasm of the central nervous system that generally arises intracranially in patients under 2 years of age. (surgicalneurologyint.com)

1 - 3 Intracranial brain tumors, most commonly medulloblastoma [ Figure 2 ], can metastasize to the peritoneal cavity via ventriculo-peritoneal shunts used to divert excess cerebrospinal fluid. (cytojournal.com)
Three months later, a cervical MRI showed progression of the tumor, along with new lesions in the thoracic/lumbar spine plus intracranial punctate nodular tumors. (surgicalneurologyint.com)

Mature teratoma of the mediastinum: A horizontal slice of the resected tumor reveals fibrofatty tissue, calcified areas, and a few cystic spaces lined with smooth membrane and containing a hair. (mdwiki.org)

A teratoma is a tumor made up of several different types of tissue , such as hair , muscle , teeth , or bone . (mdwiki.org)
Immature teratoma has one of the lowest rates of somatic mutation of any tumor type and results from one of five mechanisms of meiotic failure. (mdwiki.org)
Through genetic studies of exome sequence, it was found that gliomatosis is genetically identical to the parent ovarian tumor and developed from cells that disseminate from the ovarian teratoma. (mdwiki.org)

We aimed to determine the risk of embryonic and other types of tumors in patients with PROS in order to evaluate surveillance relevance. (bvsalud.org)

The role of genotyping and ancillary tools, in particular immunohistochemistry, in correctly classifying these tumors is highlighted in the section on Renal Cell Carcinoma. (abdominalkey.com)

The tumor is usually circumscribed by a pseudocapsule formed of compressed renal and perirenal tissues. (abdominalkey.com)

In rare cases, chemotherapy may be used for recurrent or residual tumors. (wikipedia.org)

Wiedemann-Beckwith syndrome is related to abnormalities on chromosome 11p15 and characterized by multiple craniofacial anomalies, abdominal wall defects, and tumors of the genitourinary tract, liver, adrenal gland, and central nervous system among other abnormalities. (abdominalkey.com)

Even though there is often a very dramatic and rapidly enlarging, destructive tumor, there is usually a benign clinical course after complete local excision (usually by partial maxillectomy) with clear or free surgical margins. (wikipedia.org)

The identification of this second cell population helps differentiate MNTI from other small, round, blue cell tumors. (medscape.com)
[4] Symptoms may be minimal if the tumor is small. (mdwiki.org)

The radiographic appearance of a maxillary alveolar low-density radiolucency is consistent with any of the odontogenic cysts or tumors. (medscape.com)

Teratomas occur in the coccyx in about one in 30,000 newborns, making them one of the most common tumors in this age group. (mdwiki.org)

This tumor is extremely rare, with fewer than 500 cases reported world wide. (wikipedia.org)

RESULTS: Most (42.2%, n = 35) of the cases were in advanced tumor stages (III-V), and almost one-quarter (21.7%, n = 18) of the cases were in high-risk group. (bvsalud.org)

The purpose of this chapter is to familiarize the reader with the tumor types encountered in the human rather than to provide a comprehensive diagnostic reference, which is better handled in more comprehensive textbooks and monographs. (abdominalkey.com)
Long-term follow-up studies are needed to evaluate the risk of other cancer types, as well as the relationship with the extent of tissue mosaicism and the presence or not of the variant in the tumor samples. (bvsalud.org)

In this chapter, these will be covered using an approach that has become a standard one in dealing with this group of tumors. (abdominalkey.com)

Specific discussions of etiology and pathogenesis are dealt with in each of the sections on individual tumors, rather than as a freestanding section, as is used elsewhere in this text. (abdominalkey.com)

They are a type of germ cell tumor (a tumor that begins in the cells that give rise to sperm or eggs ). (mdwiki.org)

The tumor recurred 6 months postoperatively. (bvsalud.org)

Anatomy7

Diseases35

Chemicals and Drugs14

Analytical, Diagnostic and Therapeutic Techniques and Equipment17

Phenomena and Processes9

Disciplines and Occupations1

Information Science2

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Health Care5

Melanotic neuroectodermal tumor of infancy5

Neuroblastoma4

Risk of developing1

Lymphoma1

Germ cell t6

Metastatic2

Renal tumors3

Wilms12

Embryonal1

Epithelial3

Pediatric3

Rhabdoid2

Intracranial2

Cystic1

Teratoma3

Embryonic1

Immunohistochemistry1

Compressed renal1

Chemotherapy1

Abdominal1

Clinical1

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Consistent1

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Rare1

Cases1

Types2

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