Hello Electricboatman,
Rodent ulcers, formerly called Jacob?s ulcer (also known as
basal cell carcinoma)in humans, and rodent ulcers in cats (also known
as indolent ulcers) are very different conditions. While the human
disease is a form of cancer, the condition in felines is rarely
becomes malignant. Feline rodent ulcer is a condition thought by some
to be caused by the roughness of a cat?s tongue, and manifested by an
eosinophilic reaction gone wild! Eosinophils (A form of white blood
cell)job is to destroy parasites in cats as a normal function.
It appears that the name ?rodent? as applied to these diseases may
have their etymology from the Latin word ?radere?, to scrape, or
?rodere? to eat away, corrode?. Since both basal cell carcinoma and
feline rodent?s ulcer have irregular, jagged edges, this may have
prompted the name ?Rodent?s ulcer?. Some think the name may have been
derived from the appearance of the ulcer having been caused by rat?s
teeth.
?rodent - 1835, from Mod.L. rodentia, the order name, from L.
rodentem (nom. rodens), prp. of rodere "to gnaw, eat away," from PIE
base *red- "to scrape, scratch, gnaw" (cf. Skt. radati "scrapes,
gnaws," radanah "tooth;" L. radere "to scrape;" O.E. rжtt "rat;" Welsh
rhathu "scrape, polish").
http://www.etymonline.com/index.php?l=r&p=17
The American Heritage Dictionary says:
?NOUN: A cancerous skin ulcer that derives from basal cells and
usually occurs on the face. ETYMOLOGY:Latin rod ns, rodent-, gnawing.?
http://www.bartleby.com/61/22/R0282250.html
Merriam Webster has this definition:
?Main Entry: rodent ulcer
Function: noun
Etymology: Latin rodent-, rodens gnawing
Date: 1853
: a chronic persisting ulcer of the exposed skin and especially of the
face that is destructive locally, spreads slowly, and is usually a
carcinoma derived from basal cells -- called also rodent cancer?
http://www2.merriam-webster.com/cgi-bin/mwdictsn
http://www.m-w.com/cgi-bin/dictionary
From Websters Revised Unabridged Dictionary 1913
?Rodent - (Ro"dent) a. [L. rodens, - entis, p. pr. of rodere to gnaw.
See Rase, v. t., and cf. Rostrum.]
1. Gnawing; biting; corroding; (Med.) applied to a destructive variety
of cancer or ulcer.
2. (Zo?l.) (a) Gnawing. (b) Of or pertaining to the Rodentia.
http://www.bootlegbooks.com/Reference/Webster/data/1326.html
?The term rodent ulcer has been applied to a basal cell carcinoma that
has an ulcerated portion because it appears to have been eaten away by
a rodent.?
http://www.findarticles.com/p/articles/mi_qa3977/is_200301/ai_n9220282
Proto-Turkic: *KErґi-
?Meaning: fever, contagious disease
Russian meaning: лихорадка, заразная болезнь
Old Turkic: kezik (OUygh.)
Karakhanid: kezig (KB, MK)
Turkish: gezik 'a rodent ulcer' (EDT), kezek 'gangrene'
Middle Turkic: kezek 'a rodent ulcer' (Abush.), Kypch. keziv 'pestilence' (CCum.)
http://www.indoeuropean.nl/cgi-bin/response.cgi?root=config&morpho=0&basename=%5Cdata%5Calt%5Cturcet&first=701
An obituary describes rodent ulcer as a cause of death in 1918
?Janet died at 5.10pm on April 14th 1918 in Airntully at the age of
76. In her death entry she was listed as Janet Rodgie, and as single.
The cause of death was a rodent ulcer of 6 years, as certified by Dr.
R Burgess from nearby Stanley. The informant to the regsitrar on the
15th was Alexander Robertson, inspector of the poor from Ballshie
Siding in Stanley?
http://chrispatonscotland.tripod.com/id39.html
?Basal cell carcinomas usually arise from sun-exposed areas of the
body. Hence, the nipple as a site of origin of this tumor is extremely
uncommon. Robinson first reported a case of rodent ulcer of the male
breast in a 60-year-old man in 1893.?
http://arpa.allenpress.com/arpaonline/?request=get-document&doi=10.1043%2F1543-2165(2004)128%3C792:PBCCOT%3E2.0.CO%3B2
?Although BCC rarely metastasizes, a tumor can extend beneath the skin
to the bone, causing considerable local damage due to tissue
destruction. This process leads to an ulcer that is sometimes known as
ulcus rodens or a rodent ulcer.? BCC is basal cell carcinoma.
http://www.emedicine.com/med/topic722.htm
?RODENT ULCER is actually a condition seen in humans where cancerous
skin lesions occur. Usually these are a facial ulcer not actually
having anything to do with rodents. Rodent ulcer in humans is a
locally invasive carcinoma of the basal layer of the epidermis. It
almost never metastasizes but it may aggressively invade local
tissues. Basil cell carcinoma is a form of skin cancer that occurs due
to sun exposure. Metastatic disease rarely occurs (does not spread to
distant organs). This type of cancer can cause disfigurement to the
skin and nearby structures. If left untreated for long periods, it
has the potential to invade deep tissues.
The term "Rodent" ulcer in cats is actually not descriptive or
relevant. At one time it was thought these ulcers were due or
infections contracted from rodents. Although their real cause is still
unknown, some veterinarians believe they result from constant
irritation from the cat's rough tongue.?
http://www.thepetcenter.com/gen/eulcer.html
?THE INDOLENT ULCER (also called ?the rodent ulcer?)
Cats with indolent ulcers have an erosion on the margin of their upper
lip. Sometimes, a proliferative eroded structure also develops on the
tongue so if your cat has a classical lip ulcer, it is a good idea to
open the cat?s mouth and check the tongue yourself. Tongue lesions are
usually somewhat deep inside the mouth as shown. In general, the
appearance of the indolent ulcer is classical and a biopsy is not
needed; though occasionally these are precancerous conditions and
biopsy may be needed to rule out a malignant skin tumor.?
http://www.marvistavet.com/html/body_eosinophilic_granuloma.html
?The term "Rodent" ulcer is misleading. It originated because it was
thought these sores were due or infections contracted from mice or
tats. Their real cause is still uncertain, but is is generally
believed they are the result of constant irritation from the cat's
rough tongue. The reason why only some cats develop them in not
understood.?
http://www.bobmckee.com/Client%20Info/Respiratory/rodent%20ulcer.html
?eosinophilic u. a type of rodent ulcer in cats, usually on the upper
lip near a canine tooth and seldom pruritic or painful; it is part of
the eosinophilic granuloma complex and may progress to a more serious
lesion.?
Jacob's u. rodent ulcer, especially that of an eyelid.?
http://www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspzQzpgzEzzSzppdocszSzuszSzcommonzSzdorlandszSzdorlandzSzdmd_u_01zPzhtm
?Before Thomas Harriot's death from a disfiguring rodent ulcer, July
25, 1621, he organized for publication some nine thousand papers.?
http://www.alexanderstreet2.com/EENALive/bios/A6664BIO.html
?Basal cell carcinoma (BCC), also called basalioma, basal cell
epithelioma, rodent ulcer and Jacobs' ulcer, was first described in
1824[1] and is the most common cancer among Caucasians.?
http://www.medscape.com/viewarticle/506797
?It may not be very well known that Arthur Jacob (Fig. 3) from Dublin
(1790?1874) first described Jacob's ulcer, now known as basal cell
carcinoma (BCC), in 1827. Jacob's description remains a classic to
this day and emphasized the curable nature of the condition unless
treated by extirpation.?
http://www.medscape.com/viewarticle/498454_5
?Another great Irishman was Arthur Jacob, born in 1790, and destined
to be an ophthalmologist. He had earlier travelled to Edinburgh,
London and finally Paris, all on foot. Back in Dublin, and on the
staff of Sir Patrick Dun's Hospital, he recognised the rodent ulcer in
1827, describing it as affecting the eyelids and other parts of the
face. For a long time it was known as Jacob's ulcer.?
http://www.bad.org.uk/general/history/earliest/
?Jacob's membrane - The layer of the retina containing the rods and
cones was described (in the Philosophical Transactions, 1819) by
Arthur Jacob (1790-1874), a Dublin ophthalmic surgeon who also
described 'Jacob's ulcer' (rodent ulcer or basal cell carcinoma). He
was professor of anatomy and physiology in the RCSI 1827-67.?
http://www.rcsi.ie/library/History_of_Medicine/Physical_Examination/index.asp?id=1093&pid=1093&jid=33&jpid=1086
Photo:
http://www.meddean.luc.edu/lumen/MedEd/medicine/dermatology/melton/bccru1.htm
You may find these pages of interest:
http://www.ralphmoss.com/html/galen.shtml
http://www.holisticvetpetcare.com/stomatitis-in-cats.htm
I hope this has answered your question! If not, please request an
Answer Clarification, before you rate. This will allow me to assist
you further on this question.
Sincerely, Crabcakes
Search Terms
=============
Rodent ulcers + human
Rodent ulcers + feline
Etymology + rodent ulcer
Basal cell carcinoma + rodent ulcers
Jacob?s Ulcer
Indolent ulcer + felines |
,
0 Comments
)