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Topic: Mastocytoma

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	Indian Pediatrics - Editorial
		Mastocytoma usually appear as solitary lesion, although it is estimated that 10% to 15% of all patients with one of the mast cell disorders (urticaria pigmentosa, telangiectasia macularis eruptive perstans, diffuse mastocytosis, systemic mastocytosis, and mast cell leukemia) have a mastocytoma.
		Mastocytomas have a smooth or peau d’orange surface with a rubbery consistency.
		Mastocytomas may precede another form of cutaneous mast cell disease or be associated with attacks of generalized flushing and abdominal colic.
	www.indianpediatrics.net /apr2005/apr-390.htm (326 words)

	Pediatric Mastocytosis
		In the child with isolated mastocytomas with resultant severe systemic symptoms from mast cell mediators, surgical excision of the mastocytoma may be the treatment of choice, although the majority of mastocytomas spontaneously resolve after several years.
		Mastocytoma, the other common form of mastocytosis presents in 10 to 15 percent of children with mast cell disease.
		Diffuse cutaneous mastocytoma is a rare form of the condition that is characterized by diffuse infiltration of the entire skin by mast cells.
	sdominko.tripod.com /Pediatric_mastocytosis.htm (6089 words)

	Solitary mastocytoma successfully treated with a moderate potency topical steroid Journal of Drugs in Dermatology - ...
		We report a case of solitary mastocytoma in a child which was successfully treated with a topical steroid of moderate potency.
		Solitary mastocytoma is a condition that occurs in infants characterized by localized mast cell hyperplasia and release of their mediators.
		Spontaneous total regression is the natural course in 25% of mastocytoma cases; in another 25% the regression is partial, which indicates that treatment is not often recommended (5,6).
	www.findarticles.com /p/articles/mi_m0PDG/is_3_3/ai_n6056508 (768 words)

	IRANDERMA
		The term mastocytoma has used to described nodular infiltrates (as in Quiz case) of mast cells occurring single or one of several isolated lesions.
		Solitary mastocytomas occur almost exclusively in the first 2 years of life and are often present at birth.
		Therefore are self-limited and not-threatening, reassurance of the usual benign course of this disease and avoidance of specific factors known to trigger mast cell degranulation such as immunologic (allergens), physical (heat, cold, sunlight, trauma), biologic toxins (snake, insect, jellyfish and shellfish) and drugs (aspirin, alcohol, narcotics).
	www.iranderma.com /quiz-mar06.htm (545 words)

	Mastocytoma (mast cell birthmark). DermNet NZ
		Mastocytoma is the name given to a localised form of mastocytosis.
		Mastocytoma usually appears in early childhood at a few months of age.
		If the mastocytoma is causing a lot of itching, this can often be relieved with oral antihistamines.
	dermnetnz.org /lesions/mastocytoma.html (201 words)

	cyto142+144-mastocytoma (Site not responding. Last check: 2007-10-30)
		Mastocytomas are often associated with an infiltration of inflammatory cells which can contain neutrophils and sometimes eosinophils.
		When a mastocytoma is diagnosed from cytology and aggressive excision of the tumour, with wide margins is indicated and the tumour should be submitted for histopathology to determine its grade and evaluate if the excision was adequate.
		It is also important to evaluate local lymphatic ganglia and pulmonary radiographs in order to check for the presence of metastases before deciding if the patient is a surgical candidate.
	www.medvet.umontreal.ca /clinpath/banq-im/cytology/mastocytoma.htm (102 words)

	Expression of the Mouse Mastocytoma Glucosaminyl N-Deacetylase/N-Sulfotransferase in Human Kidney 293 Cells Results in ...
		Proteins expressing both activities have previously been purified from mouse mastocytoma, which generates heparin, and from rat liver, which produces heparan sulfate.
		In the present study, the mouse mastocytoma enzyme has been expressed in the human kidney cell line, 293, to investigate whether it could promote modification of the endogenous heparan sulfate precursor polysaccharide into a heparin-like molecule.
		The N-deacetylase activity of the stably transfected cell clones was ~8-fold higher, on a cell-protein basis, than that of control cells, while the N-sulfotransferase activity was increased ~2.5-fold.
	pubs.acs.org /cgi-bin/abstract.cgi/bichaw/1996/35/i16/abs/bi952325b.html (307 words)

	Mastocytosis \| AHealthyMe.com
		An elevated level of histamine in the urine or blood is also indicative of mastocytosis.
		Mastocytoma usually occurs in childhood and clears-up on its own.
		Mastocytoma and urticaria pigmentosa rarely if ever, develop into systemic mastocytosis, and both spontaneously improve over time.
	www.ahealthyme.com /topic/topic100587133 (399 words)

	ENLmedical.com: Conditions And Concerns: Medical Encyclopedia: Urticaria pigmentosa
		Mastocytomas are the skin lesions that are seen in people with urticaria pigmentosa.
		The release of this histamine causes the welting, hives, flushing, and headache associated with urticaria pigmentosa.
		Urticaria pigmentosa is characterized by few to many brownish spots which itch and, when scratched, produce welts and reddened skin.
	www.enlmedical.com /article/001466.htm (916 words)

	Mast Cell Disease
		Flushing occurred in 26% of urticaria pigmentosa cases, 29% of mastocytomas and 100% of diffuse cutaneous mastocytosis.
		Blistering was noted in 23% of urticaria pigmentosa, 31% of mastocytomas and 100% of diffuse cases.
		A cutaneous mastocytoma excised from a 6-month-old male infant was found to have unusual massive eosinophilic infiltrates.
	www.thedoctorsdoctor.com /diseases/mast_cell_disease.htm (11683 words)

	1-C4-P19, cell types
		S1C120P10-1: In this mastocytoma, the mast cells are dendritic in outline.
		Melanin in the basal layer of the epidermis is green.
		S1C20P10-3: In this mastocytoma, the nuclear features are moncytoid and the cytoplasm of the cells is pale.
	www.mcl.tulane.edu /classware/pathology/medical_pathology/InflamDermato/S1CaTypesMisc/S1C20P10_MastCells/s1c20p10_mastcells.html (317 words)

	The Mastocytosis Society: Research - Featured Articles - A Consensus Document
		In skin, accumulation of groups of mast cells combined with the presence of urticaria pigmentosa or mastocytoma is diagnostic of cutaneous mastocytosis.
		However, elevated total tryptase levels occur temporarily after extensive mast cell mediator release and have been seen persistently in some other diseases such as non-mast cell leukemic and pre-leukemic blood disorders, so when one of these disorders is present, the level of total serum tryptase cannot be regarded as a diagnostic marker for systemic mastocytosis.
		People with extra cutaneous mastocytoma do not fit the criteria for systemic mastocytosis, and they have no skin lesions, and pathology examination of the lesion shows it to be made up of normal- or nearly normal-appearing mast cells with a non-aggressive growth pattern.
	www.tmsforacure.org /research/consensus.shtml (2258 words)

	Mast Cell Tumors (Mastocytoma) in Dogs - PetPlace.com (Site not responding. Last check: 2007-10-30)
		They develop from a normal component of body tissues called the mast cell that play a role in the process of tissue repair by releasing inflammatory mediators.
		A fine needle aspirate and cytologic evaluation of the spleen, if splenic mastocytoma is suspected.
		Surgical removal of a suspicious skin tumor followed by histopathologic evaluation by a veterinary pathologist (excisional biopsy); this may be curative for small, well-differentiated mast cell tumors of skin provided a wide surgical excision is performed.
	www.petplace.com /dogs/mast-cell-tumors-mastocytoma-in-dogs/page1.aspx (574 words)

	Urticaria pigmentosa in the armpit
		Individuals sometimes develop flushing and headache resulting from the massive release of histamine from these spots.
		This is the typical appearance of one of these spots (often referred to as a mastocytoma).
		The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition.
	www.mercydesmoines.org /ADAM/Encyclopedia/imagepages/2037.asp (189 words)

	eMedicine - Mastocytosis : Article Excerpt by: Daniel Hogan, MD
		Background: Mastocytosis is a disorder characterized by mast cell proliferation and accumulation within various organs, most commonly the skin.
		Types of cutaneous mastocytosis include solitary mastocytoma (M), diffuse erythrodermic mastocytosis, paucicellular mastocytosis (also termed telangiectasia macularis eruptiva perstans [TMEP]), and urticaria pigmentosa (UP).
		UP is the most common form and is characterized by oval or round red-brown macules, papules, or plaques ranging in number from a few to thousands (see Images 1-2).
	www.emedicine.com /derm/byname/mastocytosis.htm (545 words)

	Dog Mast Cell alpha -Chymase Activates Progelatinase B by Cleaving the Phe88-Gln89 and Phe91-Glu92 Bonds of the ...
		BR dog mastocytoma cells were cultured in Dulbecco's modified Eagle's medium-H16 medium supplemented with 2% bovine calf serum
		Poly(A) RNA was isolated from BR mastocytoma cells incubated alone or in the presence of TPA, dexamethasone, or IL-1
		In addition to the BR line of dog mastocytoma cells, several other mast cell lines expressed gelatinase B. As seen in Fig.
	www.jbc.org /cgi/content/full/272/41/25628 (5388 words)

	Mastocytosis: Allergic Reactions: Merck Manual Home Edition
		In a rare form, mast cells accumulate as a single mass in the skin (mastocytoma).
		Typically, a mastocytoma develops before age 6 months.
		In a form called urticaria pigmentosa, mast cells accumulate in many areas of the skin, forming small reddish brown spots or bumps.
	www.merck.com /mmhe/sec16/ch185/ch185e.html (560 words)

	The Putative Heparin-specific N-Acetylglucosaminyl N-Deacetylase/N-Sulfotransferase Also Occurs in ...
		mastocytoma tumor are virtually identical and have 70% of amino
		mastocytoma enzyme was associated with the biosynthesis of heparin
		resembling the mastocytoma enzyme and not the rat liver enzyme,
	www.jbc.org /cgi/content/full/273/35/22458 (4296 words)

	LSUHSC School of Medicine - Pediatrics - Research
		Sickle and wild type (C57BL/6) mice will receive either 0, 10, or 30 µg HU/g body weight by intraperitoneal injection, 5X/week (doses similar to those used in SCD patients).
		Cytotoxicity will be studied by chromium release from mastocytoma (p815) cells in mice primed 10 and 5 days earlier.
		The following techniques will be used in various experiments: flow cytometry for T cell subsets, ELISA for cytokines, coulter counter for hematologic indices, capillary electrophoresis for hemoglobin S and F analysis and 3H-thymidine uptake for cell proliferation.
	www.medschool.lsuhsc.edu /pediatrics/research/research_05.asp (366 words)

	Red Mark/Lump on 18 mo. old's face
		The red mark on his cheek shows no signs of going away, the blister thing is getting smaller.
		It sounds as though the chin lump may be a benign bump called a "mastocytoma." This is made up of mast cells, which release histamine when rubbed and can leave a temporary welt or blister.
		P.S. "Mastocytoma" neither means the same nor sounds the same as "mastitis."
	www.medhelp.org /perl6/dermatology/messages/30110a.html (426 words)

	Dog Mastocytoma Cells Secrete a 92-kD Gelatinase Activated Extracellularly by Mast Cell Chymase -- Fang et al. 97 (7): ...
		Dog Mastocytoma Cells Secrete a 92-kD Gelatinase Activated Extracellularly by Mast Cell Chymase -- Fang et al.
		Dog Mastocytoma Cells Secrete a 92-kD Gelatinase Activated Extracellularly by Mast Cell Chymase
		the purified mastocytoma progelatinase are 50-67% identical to
	www.jci.org /cgi/content/abstract/97/7/1589 (975 words)

	Medical Dictionary: Mastocytoma - WrongDiagnosis.com
		Mastocytoma: Type of or association with medical condition Mastocytosis.
		Mastocytoma: Mastocytoma is listed as a type of (or associated with) the following medical conditions in our database: Mastocytosis
		Mastocytosis (medical condition): Various rare diseases where mastocyte cells invade tissues.
	www.wrongdiagnosis.com /medical/mastocytoma.htm (241 words)

	S1C19P9MastCells
		S1C19P9-1: Mast cells are natives of the dermis, but are more easily appreciated in disorders showing hyperplasia of mast cells, or mastocytomas.
		Mast cells may be ovoid in outline with no cell processes, or they may be stellate in outline, as in this field.
		S1C19P9-5: Mast cells are rounded and polygonal in outline in this example of mastocytoma.
	www.mcl.tulane.edu /classware/pathology/medical_pathology/InflamDermato/S1CaTypesMisc/S1C19P9_MastCells/s1c19p9_mastcells.html (232 words)

	LICR Brussels Publications (Site not responding. Last check: 2007-10-30)
		Jacquemin P. Expression of type C viral glycoproteins on the membrane of methylcholanthrene induced mastocytoma P815.
		Uyttenhove C., Maryanski J., and Boon T. The escape of mouse mastocytoma P815 after nearly complete rejection is due to antigen-loss variants rather than immunosuppression.
		Mecucci C., Symann M., Bosly A., Tricot G. and Van Den Berghe H. Presence of Trisomy 12 in an EBV transformed cell line derived from a patient with hairy cell leukemia.
	www.bru.licr.org /licrb-publi-all.html (15613 words)

	Substrate Specificity of the Heparan Sulfate Hexuronic Acid 2-O-Sulfotransferase
		The interaction of heparan sulfate with different ligand proteins depends on the precise location of O-sulfate groups in the polysaccharide chain.
		We have previously shown that overexpression in human kidney 293 cells of a mouse mastocytoma 2-O-sulfotransferase (2-OST), previously thought to catalyze the transfer of sulfate from 3'-phosphoadenosine 5'-phosphosulfate to C2 of
		In the study presented here, we further investigated the substrate specificity of the mouse mastocytoma 2-OST.
	pubs.acs.org /cgi-bin/abstract.cgi/bichaw/2001/40/i18/abs/bi002926p.html (262 words)

	Identification of a Second Major Tumor-Specific Antigen Recognized by CTLs on Mouse Mastocytoma P815 -- Bilsborough et ...
		Murine mastocytoma P815 is a tumor model that is widely used
		Immunogenic variants obtained by mutagenesis of mouse mastocytoma P815: analysis of variant-specific antigens by selection of antigen-loss variants with cytolytic T cell clones.
		Escape of mouse mastocytoma P815 after nearly complete rejection is due to antigen-loss variants rather than immunosuppression.
	www.jimmunol.org /cgi/content/full/162/6/3534 (4715 words)

	Mastocytosis Pediatric Information and Parent Support
		The dermatologist told us it was rare and that it was a Solitary Mastocytoma.
		In the meantime she would also have these flushing episodes along with a blister.
		She has the textbook case, but we were never given more information on it.
	www.mastokids.org /index.php?x=bios/chloe.php (390 words)

	SNVDO Diagnostic Code Search Result (Site not responding. Last check: 2007-10-30)
		021087X0h - Mastocytoma Head H Malignant differentiation not determine
		033087X0d - Mastocytoma Thorax D Malignancy not determined
		071087X0h - Mastocytoma Axilla H Malignant differentiation not determine
	www.vet.purdue.edu /cgi-bin/dxverify1.pl (7683 words)

	Tumor Cell Surface Expression of Granulocyte-Macrophage Colony-Stimulating Factor Elicits Antitumor Immunity and ...
		Tumor Cell Surface Expression of Granulocyte-Macrophage Colony-Stimulating Factor Elicits Antitumor Immunity and Protects from Tumor Challenge in the P815 Mouse Mastocytoma Tumor Model -- Soo Hoo et al.
		Tumor Cell Surface Expression of Granulocyte-Macrophage Colony-Stimulating Factor Elicits Antitumor Immunity and Protects from Tumor Challenge in the P815 Mouse Mastocytoma Tumor Model
		Dendritic cells fused with mastocytoma cells elicit therapeutic antitumor immunity.
	www.jimmunol.org /cgi/content/full/162/12/7343 (4796 words)

	Mastocytoma definition - Medical Dictionary definitions of popular medical terms
		Mastocytoma definition - Medical Dictionary definitions of popular medical terms
		Mastocytoma: A form of mastocytosis characterized by a benign nodular skin tumor infiltrated by mast cells.
		MedicineNet does not provide medical advice, diagnosis or treatment.
	www.medterms.com /script/main/art.asp?articlekey=32783 (73 words)

	DermIS - Localized Mastocytoma (information on the diagnosis) (Site not responding. Last check: 2007-10-30)
		After rubbing, the lesions usually wheal (Darier's sign) or even blister.
		Attacks of flushing by rubbing a solitary mastocytoma are uncommon, internal organs are usually not affected.
		Mast cell tumor, Mast cell tumor, NOS, MAST CELL TUMORS, Mast cell, tumor, Mastocytoma, Mastocytoma NOS, Mastocytoma, NOS, Tumor, mast cell
	dermis.multimedica.de /dermisroot/en/41716/diagnose.htm (119 words)

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