International Harmonization of Rat Nomenclature

Summary of diagnostic terms, sorted by "Lesion Descriptor"

---

adenoma, acinar-islet cell	acinar-islet cell adenoma	B
carcinoma, acinar-islet cell	acinar-islet cell carcinoma	M
adenocarcinoma, acinar cell	acinar cell adenocarcinoma	M
adenoma, acinar cell	acinar cell adenoma	B
hyperplasia, acinar cell	acinar cell hyperplasia	H
adenocarcinoma	adenocarcinoma	M
adenocarcinoma arising in fibroadenoma	adenocarcinoma arising in fibroadenoma	M
adenoma	adenoma	B
adenomyosis	adenomyosis	N
carcinoma, adenosquamous	adenosquamous carcinoma	M
odontoma, ameloblastic	ameloblastic odontoma	B
ameloblastoma	ameloblastoma	M
hyperplasia, angiomatous	angiomatous hyperplasia	H
astrocytoma, benign	astrocytoma, benign	B
astrocytoma, malignant	astrocytoma, malignant	M
mesothelioma, atriocaval, malignant	atriocaval mesothelioma, malignant	M
hyperplasia, basal cell	basal cell hyperplasia	H
tumor, basal cell, benign	basal cell tumor, benign	B
tumor, basal cell, malignant	basal cell tumor, malignant	M
hyperplasia, bile duct	bile duct hyperplasia	H
hyperplasia, Bowman's capsule	Bowman's capsule hyperplasia	N
carcinoma, bronchial	bronchial carcinoma	M
adenoma, bronchiolo-alveolar	bronchiolo-alveolar adenoma	B
carcinoma, bronchiolo-alveolar	bronchiolo-alveolar carcinoma	M
hyperplasia, bronchiolo-alveolar	bronchiolo-alveolar hyperplasia	H
adenoma, C-cell	C-cell adenoma	B
carcinoma, C-cell	C-cell carcinoma	M
hyperplasia, C-cell	C-cell hyperplasia	H
callus	callus	N
carcinoma	carcinoma	M
carcinoma, NOS	carcinoma, NOS	M
hyperplasia, cartilage	cartilage hyperplasia	N
cholangiocarcinoma	cholangiocarcinoma	M
cholangiofibroma	cholangiofibroma	B
cholangiofibrosis	cholangiofibrosis	H
cholangioma	cholangioma	B
metaplasia, chondro-osseous	chondro-osseous metaplasia	N
chondroma	chondroma	B
chondrosarcoma	chondrosarcoma	M
chordoma, benign	chordoma, benign	B
chordoma, malignant	chordoma, malignant	M
choriocarcinoma	choriocarcinoma	M
carcinoma, choroid plexus	choroid plexus carcinoma	M
papilloma, choroid plexus	choroid plexus papilloma	B
chronic progressive nephropathy	chronic progressive nephropathy	N
pheochromocytoma, complex, benign	complex pheochromocytoma, benign	B
pheochromocytoma, complex, malignant	complex pheochromocytoma, malignant	M
adenoma, cortical	cortical adenoma	B
carcinoma, cortical	cortical carcinoma	M
hyperplasia, cortical	cortical hyperplasia	H
craniopharyngioma, benign	craniopharyngioma, benign	B
craniopharyngioma, malignant	craniopharyngioma, malignant	M
cystadenocarcinoma	cystadenocarcinoma	M
cystadenoma	cystadenoma	B
hyperplasia, cystic/papillary	cystic/papillary hyperplasia	H
decidual reaction	decidual reaction	H
adenocarcinoma, ductal cell	ductal cell adenocarcinoma	M
adenoma, ductal cell	ductal cell adenoma	B
hyperplasia, ductal cell	ductal cell hyperplasia	H
dysgerminoma	dysgerminoma	B
dysplasia	dysplasia	H
carcinoma, embryonal	embryonal carcinoma	M
hyperplasia, endocardial	endocardial hyperplasia	H
schwannoma, endocardial, benign	endocardial schwannoma, benign	B
schwannoma, endocardial, malignant	endocardial schwannoma, malignant	M
adenocarcinoma, endometrial	endometrial adenocarcinoma	M
adenoma, endometrial	endometrial adenoma	B
hyperplasia, endometrial	endometrial hyperplasia	H
polyp, endometrial stromal	endometrial stromal polyp	B
sarcoma, endometrial stromal	endometrial stromal sarcoma	M
tumor, endometrial stromal, benign	endometrial stromal tumor, benign	B
ependymoma, benign	ependymoma, benign	B
ependymoma, malignant	ependymoma, malignant	M
hyperplasia, epithelial	epithelial hyperplasia	H
leukemia, erythroid	erythroid leukemia	S
extramedullary hematopoiesis	extramedullary hematopoiesis	N
metaplasia, fibro-osseous	fibro-osseous metaplasia	N
fibroadenoma	fibroadenoma	B
fibroma	fibroma	B
fibrosarcoma	fibrosarcoma	M
histiocytoma, fibrous, benign	fibrous histiocytoma, benign	B
histiocytoma, fibrous, malignant	fibrous histiocytoma, malignant	M
hyperplasia, fibrous/muscular	fibrous/muscular hyperplasia	N
focus of cellular alteration	focus of cellular alteration	H
adenoma, follicular cell	follicular cell adenoma	B
carcinoma, follicular cell	follicular cell carcinoma	M
hyperplasia, follicular cell	follicular cell hyperplasia	H
ganglioglioma, benign	ganglioglioma, benign	B
ganglioneuroma, benign	ganglioneuroma, benign	B
polyp, glandular	glandular polyp	B
glioma, NOS, malignant	glioma, NOS, malignant	M
hyperplasia, granular cell	granular cell hyperplasia	H
tumor, granular cell, benign	granular cell tumor, benign	B
leukemia, granulocytic	granulocytic leukemia	S
tumor, granulosa cell, benign	granulosa cell tumor, benign	B
tumor, granulosa cell, malignant	granulosa cell tumor, malignant	M
tumor, hair follicle, benign	hair follicle tumor, benign	B
hemangioma	hemangioma	B
hemangiopericytoma, benign	hemangiopericytoma, benign	B
hemangiopericytoma, malignant	hemangiopericytoma, malignant	M
hemangiosarcoma	hemangiosarcoma	M
adenoma, hepatocellular	hepatocellular adenoma	B
carcinoma, hepatocellular	hepatocellular carcinoma	M
hyperplasia, hepatocellular, regenerative	hepatocellular regenerative hyperplasia	H
adenoma, hepatocholangiocellular	hepatocholangiocellular adenoma	B
carcinoma, hepatocholangiocellular	hepatocholangiocellular carcinoma	M
hibernoma, benign	hibernoma, benign	B
hibernoma, malignant	hibernoma, malignant	M
sarcoma, histiocytic	histiocytic sarcoma	M
histiocytosis	histiocytosis	N
hyperkeratosis	hyperkeratosis	N
hyperostosis	hyperostosis	N
hyperplasia	hyperplasia	H
hyperplasia, with cellular atypia	hyperplasia, with cellular atypia	H
hyperplasia, with cellular atypia (dysplasia)	hyperplasia, with cellular atypia (dysplasia)	H
focus, hypertrophic, basophilic	hypertrophic basophilic focus	N
increased hematopoiesis	increased hematopoiesis	N
adenoma, interstitial (Leydig) cell	interstitial (Leydig) cell adenoma	B
carcinoma, interstitial (Leydig) cell	interstitial (Leydig) cell carcinoma	M
hyperplasia, interstitial (Leydig) cell	interstitial (Leydig) cell hyperplasia	H
schwannoma, intramural, benign	intramural schwannoma, benign	B
schwannoma, intramural, malignant	intramural schwannoma, malignant	M
schwannoma, intraocular, malignant	intraocular schwannoma, malignant	M
adenoma, islet cell	islet cell adenoma	B
carcinoma, islet cell	islet cell carcinoma	M
hyperplasia, islet cell	islet cell hyperplasia	H
hyperplasia, juxtaglomerular	juxtaglomerular hyperplasia	N
karyomegaly	karyomegaly	N
epithelioma, cystic, keratinizing	keratinizing cystic epithelioma	B
cyst, squamous cell, keratinizing	keratinizing squamous cell cyst	N
keratoacanthoma	keratoacanthoma	B
leiomyoma	leiomyoma	B
leiomyosarcoma	leiomyosarcoma	M
leukemia, NOS	leukemia, NOS	S
lipoma	lipoma	B
liposarcoma	liposarcoma	M
luteoma, benign	luteoma, benign	B
lymphangioma	lymphangioma	B
lymphangiosarcoma	lymphangiosarcoma	M
hyperplasia, lymphoid	lymphoid hyperplasia	N
lymphoma, malignant	lymphoma, malignant	S
tumor, mast cell, malignant	mast cell tumor, malignant	M
mastocytosis	mastocytosis	N
hyperplasia, medullary	medullary hyperplasia	H
medulloblastoma	medulloblastoma	M
melanoma, benign	melanoma, benign	B
melanoma, malignant	melanoma, malignant	M
meningioma, benign	meningioma, benign	B
meningioma, malignant	meningioma, malignant	M
hyperplasia, mesangial	mesangial hyperplasia	N
hyperplasia, mesothelial	mesothelial hyperplasia	H
mesothelioma, malignant	mesothelioma, malignant	M
glioma, mixed, benign	mixed glioma, benign	B
glioma, mixed, malignant	mixed glioma, malignant	M
tumor, Muellerian, mixed, benign	mixed Muellerian tumor, benign	B
tumor, Muellerian, mixed, malignant	mixed Muellerian tumor, malignant	M
sarcoma, mixed	mixed sarcoma	M
tumor, sex cord stromal, mixed, benign	mixed sex cord stromal tumor, benign	B
tumor, sex cord stromal, mixed, malignant	mixed sex cord stromal tumor, malignant	M
tumor, mixed, benign	mixed tumor, benign	B
tumor, mixed, malignant	mixed tumor, malignant	M
hyperplasia, mucous cell	mucous cell hyperplasia	H
metaplasia, mucous cell	mucous cell metaplasia	H
myelofibrosis	myelofibrosis	N
myelolipoma	myelolipoma	B
nephroblastoma	nephroblastoma	M
carcinoma, neurepithelial	neurepithelial carcinoma	M
neuroblastoma, malignant	neuroblastoma, malignant	M
hyperplasia, neuroendocrine cell	neuroendocrine cell hyperplasia	H
tumor, neuroendocrine cell, benign	neuroendocrine cell tumor, benign	B
tumor, neuroendocrine cell, malignant	neuroendocrine cell tumor, malignant	M
neuromyoblastoma, malignant	neuromyoblastoma, malignant	M
epithelioma, non-keratinizing	non-keratinizing epithelioma	B
dermoid, ocular	ocular dermoid	B
fibroma, odontogenic	odontogenic fibroma	B
tumor, odontogenic, benign	odontogenic tumor, benign	B
tumor, odontogenic, malignant	odontogenic tumor, malignant	M
odontoma	odontoma	B
hyperplasia, olfactory epithelial	olfactory epithelial hyperplasia	H
oligodendroglioma, benign	oligodendroglioma, benign	B
oligodendroglioma, malignant	oligodendroglioma, malignant	M
osteochondroma	osteochondroma	B
osteoma	osteoma	B
osteophyte	osteophyte	N
osteosarcoma	osteosarcoma	M
hyperplasia, oval cell	oval cell hyperplasia	H
papilloma	papilloma	B
paraganglioma, benign	paraganglioma, benign	B
parakeratosis	parakeratosis	N
adenoma, pars distalis	pars distalis adenoma	B
carcinoma, pars distalis	pars distalis carcinoma	M
hyperplasia, pars distalis	pars distalis hyperplasia	H
adenoma, pars intermedia	pars intermedia adenoma	B
hyperplasia, pars intermedia	pars intermedia hyperplasia	H
pheochromocytoma, benign	pheochromocytoma, benign	B
pheochromocytoma, malignant	pheochromocytoma, malignant	M
pinealoma, benign	pinealoma, benign	B
pinealoma, malignant	pinealoma, malignant	M
pituicytoma	pituicytoma	B
plasmacytosis	plasmacytosis	N
lipoma, renal	renal lipoma	B
liposarcoma, renal	renal liposarcoma	M
tumor, renal mesenchymal, benign	renal mesenchymal tumor, benign	B
tumor, renal mesenchymal, malignant	renal mesenchymal tumor, malignant	M
adenoma, renal tubule	renal tubule adenoma	B
carcinoma, renal tubule	renal tubule carcinoma	M
hyperplasia, renal tubule	renal tubule hyperplasia	H
hyperplasia, respiratory epithelial	respiratory epithelial hyperplasia	H
metaplasia, respiratory epithelial	respiratory epithelial metaplasia	H
adenoma, rete testis	rete testis adenoma	B
carcinoma, rete testis	rete testis carcinoma	M
hyperplasia, rete testis	rete testis hyperplasia	H
reticulosis, malignant	reticulosis, malignant	M
retinoblastoma	retinoblastoma	M
rhabdomyosarcoma	rhabdomyosarcoma	M
sarcoma, NOS	sarcoma, NOS	M
schwannoma, benign	schwannoma, benign	B
schwannoma, malignant	schwannoma, malignant	M
adenoma, sebaceous cell	sebaceous cell adenoma	B
carcinoma, sebaceous cell	sebaceous cell carcinoma	M
hyperplasia, sebaceous cell	sebaceous cell hyperplasia	H
metaplasia, seminal vesicle-like	seminal vesicle-like metaplasia	H
seminoma, benign	seminoma, benign	B
seminoma, malignant	seminoma, malignant	M
tumor, Sertoli-interstitial (Leydig) cell, benign	Sertoli-interstitial (Leydig) cell tumor, benign	B
tumor, Sertoli-interstitial (Leydig) cell, malignant	Sertoli-interstitial (Leydig) cell tumor, malignant	M
tumor, Sertoli cell, benign	Sertoli cell tumor, benign	B
tumor, Sertoli cell, malignant	Sertoli cell tumor, malignant	M
hyperplasia, sex cord stromal	sex cord stromal hyperplasia	H
sinus histiocytosis	sinus histiocytosis	N
hyperplasia, smooth muscle	smooth muscle hyperplasia	H
carcinoma, squamous cell	squamous cell carcinoma	M
hyperplasia, squamous cell	squamous cell hyperplasia	H
metaplasia, squamous cell	squamous cell metaplasia	H
papilloma, squamous cell	squamous cell papilloma	B
hyperplasia, stromal	stromal hyperplasia	H
hyperplasia, synovial cell	synovial cell hyperplasia	N
sarcoma, synovial	synovial sarcoma	M
teratoma, benign	teratoma, benign	B
teratoma, malignant	teratoma, malignant	M
thecoma, benign	thecoma, benign	B
thecoma, malignant	thecoma, malignant	M
thymoma, benign	thymoma, benign	B
thymoma, malignant	thymoma, malignant	M
carcinoma, transitional cell	transitional cell carcinoma	M
hyperplasia, transitional cell	transitional cell hyperplasia	H
papilloma, transitional cell	transitional cell papilloma	B
hyperplasia, tubules and cords	tubules and cords hyperplasia	H
adenoma, tubulostromal	tubulostromal adenoma	B
carcinoma, tubulostromal	tubulostromal carcinoma	M
hyperplasia, tubulostromal	tubulostromal hyperplasia	H
tumor, unclassifiable, benign	unclassifiable tumor, benign	B
tumor, unclassifiable, malignant	unclassifiable tumor, malignant	M
leiomyoma, uveal	uveal leiomyoma	B
melanoma, uveal, malignant	uveal melanoma, malignant	M
polyp, vaginal	vaginal polyp	B
adenoma, yolk sac	yolk sac adenoma	B
carcinoma, yolk sac	yolk sac carcinoma	M

---

Last Update: 21-Jun-2000