Thornwaldt`s Cyst
... of symptoms, followed by confirmation by nasopharyngoscopy and image study. Mass usually encountered midline and the surface is covered with intact mucosa (1). Magnetic resonance imaging (MRI) examination is more specific than computed tomography (CT) for the diagnosis of the Thornwaldt’s cysts (2). ...
... of symptoms, followed by confirmation by nasopharyngoscopy and image study. Mass usually encountered midline and the surface is covered with intact mucosa (1). Magnetic resonance imaging (MRI) examination is more specific than computed tomography (CT) for the diagnosis of the Thornwaldt’s cysts (2). ...
Solid Tumour Section Kidney: Nephroblastoma (Wilms tumor) Atlas of Genetics and Cytogenetics
... Note: Other chromosomal regions involved are: - 11p15 : BWS, an overgrowth syndrome, is caused by alterations of 11p15, a region subject to genomic imprinting: loss of of imprinting of IGF2 is the most common defect found; WT1 is rarely implicated solely in sporadic Wilms tumours, but maternal allel ...
... Note: Other chromosomal regions involved are: - 11p15 : BWS, an overgrowth syndrome, is caused by alterations of 11p15, a region subject to genomic imprinting: loss of of imprinting of IGF2 is the most common defect found; WT1 is rarely implicated solely in sporadic Wilms tumours, but maternal allel ...
also see p. Onc38 - Viktor`s Notes for the Neurosurgery Resident
... familial meningiomas are rare (unless associated with neurofibromatosis-2). most common (60% of sporadic meningiomas) - loss of NF-2 gene (22q12), meningioma locus is close to but probably different from gene responsible for NF-2. others - chromosomal loss of 1p, 3p, 6q, 14q, 8p12 (Werner’s sy ...
... familial meningiomas are rare (unless associated with neurofibromatosis-2). most common (60% of sporadic meningiomas) - loss of NF-2 gene (22q12), meningioma locus is close to but probably different from gene responsible for NF-2. others - chromosomal loss of 1p, 3p, 6q, 14q, 8p12 (Werner’s sy ...
Abordagem transcervical para exérese transmilohioideia de quisto
... dermoid cysts occurs in the head and neck and only about 1,6 to 6,5% in the mouth floor1. Dermoid cysts accounts for only 11% of head and neck congenital cysts, less frequent than thyroglossal duct and branquial cleft cysts2 and in an initial clinical evaluation are frequently presumed to be salivar ...
... dermoid cysts occurs in the head and neck and only about 1,6 to 6,5% in the mouth floor1. Dermoid cysts accounts for only 11% of head and neck congenital cysts, less frequent than thyroglossal duct and branquial cleft cysts2 and in an initial clinical evaluation are frequently presumed to be salivar ...
Tumors of the Lateral Ventricle
... horn and atrium are safely and easily operated on with transcortical approach. The transcortical approach provides superior working space, and more flexibility in traversing the lateral ventricle (7). Planning and performing surgery via the transcallosal or transcortical approach is dependent on the ...
... horn and atrium are safely and easily operated on with transcortical approach. The transcortical approach provides superior working space, and more flexibility in traversing the lateral ventricle (7). Planning and performing surgery via the transcallosal or transcortical approach is dependent on the ...
Head & Neck Tumour P..
... Epidermal and Sebaceous Cysts • Most common congenital/developmental mass • Older age groups ...
... Epidermal and Sebaceous Cysts • Most common congenital/developmental mass • Older age groups ...
p. Onc30 - Viktor`s Notes for the Neurosurgery Resident
... cyst wall at locations where it adheres to adjacent structures) simple cyst aspiration, cyst wall marsupialization, or creation of cyst-subarachnoid shunt*, are considered in difficult cases. *aseptic meningitis has not been problem one might expect. recurrence is possible even after gross total ...
... cyst wall at locations where it adheres to adjacent structures) simple cyst aspiration, cyst wall marsupialization, or creation of cyst-subarachnoid shunt*, are considered in difficult cases. *aseptic meningitis has not been problem one might expect. recurrence is possible even after gross total ...
Primary Parapharyngeal Tumors
... involves the post-styloid space or for extensive vascular tumors that surround the carotid artery at the level of the skull base. In recent years increasing number of patients underwent fine needle aspiration of nonvascular lesions. Some investigators have found it to be very helpful for accurate di ...
... involves the post-styloid space or for extensive vascular tumors that surround the carotid artery at the level of the skull base. In recent years increasing number of patients underwent fine needle aspiration of nonvascular lesions. Some investigators have found it to be very helpful for accurate di ...
Distinguishing Benign from Malignant
... History: 58 year old male presents with general weakness. Features: Multiple cavitary lesions with thick, irregular walls, spiculated margins and additional solid nodules. The largest contains an air-fluid level with surrounding ground glass Diagnosis: Non-small cell lung cancer with metastases. Pri ...
... History: 58 year old male presents with general weakness. Features: Multiple cavitary lesions with thick, irregular walls, spiculated margins and additional solid nodules. The largest contains an air-fluid level with surrounding ground glass Diagnosis: Non-small cell lung cancer with metastases. Pri ...
CNS Tumors
... – The anatomic site of the neoplasm can have lethal consequences irrespective of histological classification (i.e. benign tumors can be fatal in certain locations) examples on such locations? – The pattern of spread of primary CNS neoplasms differs from that of other tumors: • rarely metastasize o ...
... – The anatomic site of the neoplasm can have lethal consequences irrespective of histological classification (i.e. benign tumors can be fatal in certain locations) examples on such locations? – The pattern of spread of primary CNS neoplasms differs from that of other tumors: • rarely metastasize o ...
See p. Op305 - Viktor`s Notes for the Neurosurgery Resident
... MICROADENOMAS confined to sella and larger tumors that, in past, could be approached only by subfrontal craniotomy)! possible for fairly large medial suprasellar extensions, as long as tumor is soft (usual case) and can drop into sella with progressive resection (alternatively: follow postop MRI – ...
... MICROADENOMAS confined to sella and larger tumors that, in past, could be approached only by subfrontal craniotomy)! possible for fairly large medial suprasellar extensions, as long as tumor is soft (usual case) and can drop into sella with progressive resection (alternatively: follow postop MRI – ...
Evaluation and Management of Pediatric Neck masses
... H&P combined with FNA is crucial for diagnosis FNA ...
... H&P combined with FNA is crucial for diagnosis FNA ...
TUMORS OF THE SALIVARY GLANDS
... TUMORS OF THE SALIVARY GLANDS ANATOMY - PAROTID THE PAROTID DUCT LIES ON AN IMAGINARY LINE BETWEEN THE EXTERNAL NARES AND THE TRAGUS OF THE EAR. ...
... TUMORS OF THE SALIVARY GLANDS ANATOMY - PAROTID THE PAROTID DUCT LIES ON AN IMAGINARY LINE BETWEEN THE EXTERNAL NARES AND THE TRAGUS OF THE EAR. ...
Thyroid Nodules
... Familial: MTC without other features of MEN Variable age (Sporadic/MEN):sixth and seventh decades in sporadic forms. more aggressive in MEN-2B than in MEN-2A familial MTC is more aggressive than sporadic MTC 5 to 10% of thyroid cancers RET mutations in some sporadic cancers. Calcitonin is an excelle ...
... Familial: MTC without other features of MEN Variable age (Sporadic/MEN):sixth and seventh decades in sporadic forms. more aggressive in MEN-2B than in MEN-2A familial MTC is more aggressive than sporadic MTC 5 to 10% of thyroid cancers RET mutations in some sporadic cancers. Calcitonin is an excelle ...
radiological examination of the mediastinum and diaphragm.
... helpful; further evaluation is carried out by CT/MRI for anatomical localization. The presence of cystic lesions, calcification, fat and vascular structures are all more accurately assessed than by plain films. ...
... helpful; further evaluation is carried out by CT/MRI for anatomical localization. The presence of cystic lesions, calcification, fat and vascular structures are all more accurately assessed than by plain films. ...
DMSM 111 Superficial Structures Part I
... and location of fat and fibrous tissue due to patient age, functional state of the breasts, and body habitus. For example, young women will tend to have more dense fibroglandular tissue that appears HYPERECHOIC. Older women tend to have more fatty replacement that appears ISOECHOIC. The lactating pa ...
... and location of fat and fibrous tissue due to patient age, functional state of the breasts, and body habitus. For example, young women will tend to have more dense fibroglandular tissue that appears HYPERECHOIC. Older women tend to have more fatty replacement that appears ISOECHOIC. The lactating pa ...
T2WI - Rackcdn.com
... Well defined mass to diffusely infiltrative Hyper dense on CT Homogenous on MRI: hyper intense on T1WI, hypo intense on T2WI, hyper intense on DWI, homogenously enhanced with contrast media ...
... Well defined mass to diffusely infiltrative Hyper dense on CT Homogenous on MRI: hyper intense on T1WI, hypo intense on T2WI, hyper intense on DWI, homogenously enhanced with contrast media ...
Polypoid melanoma - Our Dermatology Online journal
... course. Its rapidly growing vertical phase and its amelanotic nature frequently simulate benign or non-aggressive entities; leading to a delay in biopsy and resulting in an increased risk of metastasis at the time of the diagnosis. Key words: polypoid, melanoma, dermatopathology, nodular, breslow ...
... course. Its rapidly growing vertical phase and its amelanotic nature frequently simulate benign or non-aggressive entities; leading to a delay in biopsy and resulting in an increased risk of metastasis at the time of the diagnosis. Key words: polypoid, melanoma, dermatopathology, nodular, breslow ...
Nasopharyngeal angiofibroma - The Medical Post | Trusting
... 4. Trismus: involvement of pterygoid muscle 5. Involvement of II, III, IV, VI cranial nerve ...
... 4. Trismus: involvement of pterygoid muscle 5. Involvement of II, III, IV, VI cranial nerve ...
Operative approaches to lateral and third ventricular
... • Access to both ventricles • Less chances of epilepsy (?) • Entry to third ventricle easy if required ...
... • Access to both ventricles • Less chances of epilepsy (?) • Entry to third ventricle easy if required ...
AZ188-08_FERTIG.qxd (Page 632)
... activity, any necrosis, and tumor differentiation. The total score gives the malignancy grade. However, not all sarcomas can be equally well assessed by this grading scheme. Some sarcomas have in addition a fixed malignancy grade, while for others (e.g., epithelioid sarcoma, clear cell sarcoma, or a ...
... activity, any necrosis, and tumor differentiation. The total score gives the malignancy grade. However, not all sarcomas can be equally well assessed by this grading scheme. Some sarcomas have in addition a fixed malignancy grade, while for others (e.g., epithelioid sarcoma, clear cell sarcoma, or a ...
LATERAL NECK MASSES Prof. Alam
... In some instances, branchial cleft cyst patients may present with locally compressive symptoms. A family history of branchial cleft cysts may be present ...
... In some instances, branchial cleft cyst patients may present with locally compressive symptoms. A family history of branchial cleft cysts may be present ...
Petroclival meningiomas
... • Gross total resection: varies between 20-79%. The most important goal of surgery: brainstem decompression. • Risk factors for surgical morbidity: prior resection, preop finding of CN palsies, adherent or fibrous tumor, peritumoral edema, extension of the tumor to the lower CN. • Morbidity: CN pa ...
... • Gross total resection: varies between 20-79%. The most important goal of surgery: brainstem decompression. • Risk factors for surgical morbidity: prior resection, preop finding of CN palsies, adherent or fibrous tumor, peritumoral edema, extension of the tumor to the lower CN. • Morbidity: CN pa ...
Teratoma
A teratoma is a tumor with tissue or organ components resembling normal derivatives of more than one germ layer. Although the teratoma may be monodermal or polydermal (originating from one or more germ layers), its cells may differentiate in ways suggesting other germ layers. The tissues of a teratoma, although normal in themselves, may be quite different from surrounding tissues and may be highly disparate; teratomas have been reported to contain hair, teeth, bone and, very rarely, more complex organs or processes such as eyes, torso, and hands, feet, or other limbs.Usually, a teratoma will contain no organs but rather one or more tissues normally found in organs such as the brain, thyroid, liver, and lung. Sometimes, the teratoma has within its capsule one or more fluid-filled cysts; when a large cyst occurs, there is a potential for the teratoma to produce a structure within the cyst that resembles a fetus. Because they are encapsulated, teratomas are usually benign, although several forms of malignant teratoma are known and some of these are common forms of teratoma. A mature teratoma is typically benign and found more commonly in women, while an immature teratoma is typically malignant and is more often found in men.Teratomas are thought to be present at birth (congenital), but small ones often remain undiscovered until much later in life.Definitive medical diagnosis of a teratoma is based on its histology.