TDMS Study 05161-06 Pathology Tables
NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 MICE/FINAL#1 Facility: Southern Research Institute Chemical CAS #: 23246-96-0 Lock Date: 11/17/99 Cage Range: All Reasons For Removal: All Removal Date Range: All Treatment Groups: Include All a Number of animals examined microscopically at site and number of animals with lesion Page 1 NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE FEMALE 0 3.0 MG/KG/DY MG/KG/DY ____________________________________________________________________________________________________________________________________ DISPOSITION SUMMARY Animals Initially in Study 50 50 Early Deaths Moribund Sacrifice 9 25 Natural Death 3 8 Accidently Killed 4 Survivors Natural Death 1 Terminal Sacrifice 34 16 Animals Examined Microscopically 50 50 ____________________________________________________________________________________________________________________________________ ALIMENTARY SYSTEM Gallbladder (45) (45) Histiocytic Sarcoma 1 (2%) Sarcoma 1 (2%) Intestine Large, Colon (49) (47) Intestine Large, Cecum (48) (47) Histiocytic Sarcoma 1 (2%) 1 (2%) Intestine Small, Jejunum (43) (45) Histiocytic Sarcoma 1 (2%) Intestine Small, Ileum (46) (46) Liver (49) (50) Cholangioma 1 (2%) Hemangiosarcoma 1 (2%) Hepatocellular Carcinoma 7 (14%) Hepatocellular Carcinoma, Multiple 1 (2%) Hepatocellular Adenoma 7 (14%) Hepatocellular Adenoma, Multiple 2 (4%) Histiocytic Sarcoma 1 (2%) 2 (4%) Sarcoma, Multiple 1 (2%) Mesentery (23) (29) Carcinoma, Metastatic, Kidney 1 (3%) Hemangioma 1 (3%) Histiocytic Sarcoma 1 (4%) 1 (3%) Sarcoma 1 (3%) Sarcoma, Multiple 1 (4%) Pancreas (49) (50) Histiocytic Sarcoma 1 (2%) 1 (2%) Sarcoma, Multiple 1 (2%) Page 2 NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE FEMALE 0 3.0 MG/KG/DY MG/KG/DY ____________________________________________________________________________________________________________________________________ ALIMENTARY SYSTEM - cont Salivary Glands (50) (50) Stomach, Forestomach (49) (49) Stomach, Glandular (49) (48) Histiocytic Sarcoma 1 (2%) ____________________________________________________________________________________________________________________________________ CARDIOVASCULAR SYSTEM Heart (50) (50) ____________________________________________________________________________________________________________________________________ ENDOCRINE SYSTEM Adrenal Cortex (50) (50) Histiocytic Sarcoma 1 (2%) 1 (2%) Adrenal Medulla (49) (49) Pituitary Gland (48) (49) Adenoma 1 (2%) Pars Distalis, Adenoma 5 (10%) 1 (2%) Thyroid Gland (49) (50) ____________________________________________________________________________________________________________________________________ GENERAL BODY SYSTEM None ____________________________________________________________________________________________________________________________________ GENITAL SYSTEM Clitoral Gland (49) (49) Duct, Carcinoma 1 (2%) Ovary (49) (48) Cystadenoma 1 (2%) Granulosa Cell Tumor Benign 1 (2%) Luteoma 1 (2%) Uterus (49) (50) Hemangioma 1 (2%) Histiocytic Sarcoma 1 (2%) Leiomyosarcoma 1 (2%) Endometrium, Adenoma 1 (2%) Endometrium, Polyp Stromal 1 (2%) Vagina (2) Sarcoma 1 (50%) Page 3 NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE FEMALE 0 3.0 MG/KG/DY MG/KG/DY ____________________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________________________________ HEMATOPOIETIC SYSTEM Bone Marrow (50) (50) Carcinoma, Metastatic, Kidney 1 (2%) Histiocytic Sarcoma 1 (2%) Lymph Node (7) (15) Iliac, Histiocytic Sarcoma 1 (14%) Mediastinal, Histiocytic Sarcoma 1 (14%) 1 (7%) Pancreatic, Histiocytic Sarcoma 1 (14%) Pancreatic, Sarcoma 1 (14%) Renal, Histiocytic Sarcoma 1 (14%) Lymph Node, Mandibular (48) (47) Histiocytic Sarcoma 1 (2%) Lymph Node, Mesenteric (48) (49) Histiocytic Sarcoma 1 (2%) 1 (2%) Spleen (49) (50) Hemangiosarcoma 1 (2%) Histiocytic Sarcoma 1 (2%) 1 (2%) Plasma Cell Tumor Malignant 1 (2%) Thymus (49) (39) Histiocytic Sarcoma 1 (3%) ____________________________________________________________________________________________________________________________________ INTEGUMENTARY SYSTEM Mammary Gland (49) (50) Adenoma 1 (2%) Carcinoma 2 (4%) Skin (50) (50) Subcutaneous Tissue, Sarcoma 3 (6%) 2 (4%) Subcutaneous Tissue, Sarcoma, Multiple 1 (2%) ____________________________________________________________________________________________________________________________________ MUSCULOSKELETAL SYSTEM Bone (50) (50) Cranium, Carcinoma, Metastatic, Harderian Gland 1 (2%) Skeletal Muscle (1) (3) Histiocytic Sarcoma 1 (33%) Sarcoma, Multiple 1 (100%) ____________________________________________________________________________________________________________________________________ Page 4 NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE FEMALE 0 3.0 MG/KG/DY MG/KG/DY ____________________________________________________________________________________________________________________________________ NERVOUS SYSTEM Brain (50) (50) ____________________________________________________________________________________________________________________________________ RESPIRATORY SYSTEM Lung (50) (50) Alveolar/Bronchiolar Adenoma 1 (2%) 9 (18%) Alveolar/Bronchiolar Carcinoma 3 (6%) Alveolar/Bronchiolar Carcinoma, Multiple 1 (2%) 1 (2%) Carcinoma, Metastatic, Harderian Gland 1 (2%) Histiocytic Sarcoma 1 (2%) 1 (2%) Sarcoma, Metastatic, Skin 1 (2%) Sarcoma, Metastatic, Uncertain Primary Site 1 (2%) Mediastinum, Carcinoma, Metastatic, Kidney 1 (2%) Nose (50) (50) ____________________________________________________________________________________________________________________________________ SPECIAL SENSES SYSTEM Harderian Gland (4) (5) Adenoma 2 (50%) 3 (60%) Carcinoma 2 (50%) 1 (20%) ____________________________________________________________________________________________________________________________________ URINARY SYSTEM Kidney (49) (50) Carcinoma, Metastatic, Mammary Gland 1 (2%) Histiocytic Sarcoma 1 (2%) 2 (4%) Osteosarcoma 1 (2%) Ureter (1) Carcinoma, Metastatic, Kidney 1 (100%) Urinary Bladder (50) (48) Sarcoma 1 (2%) Page 5 NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE FEMALE 0 3.0 MG/KG/DY MG/KG/DY ____________________________________________________________________________________________________________________________________ SYSTEMIC LESIONS Multiple Organs *(50) *(50) Histiocytic Sarcoma 1 (2%) 2 (4%) Lymphoma Malignant 7 (14%) 9 (18%) ____________________________________________________________________________________________________________________________________ * Number of animals with any tissue examined microscopically Page 6 NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE FEMALE 0 3.0 MG/KG/DY MG/KG/DY ____________________________________________________________________________________________________________________________________ TUMOR SUMMARY Total Animals with Primary Neoplasms (b) 31 33 Total Primary Neoplasms 49 49 Total Animals with Benign Neoplasms 15 17 Total Benign Neoplasms 19 21 Total Animals with Malignant Neoplasms 21 20 Total Malignant Neoplasms 30 28 Total Animals with Metastatic Neoplasms 2 3 Total Metastatic Neoplasm 3 6 Total Animals with Malignant Neoplasms 1 Uncertain Primary Site Total Animals with Neoplasms Uncertain- Benign or Malignant Total Uncertain Neoplasms ____________________________________________________________________________________________________________________________________ a Number of animals examined microscopically at site and number of animals with lesion b Primary tumors: all tumors except metastatic tumors Page 7 NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE MALE 0 0.1 0.3 1.0 3.0 MG/KG/DY MG/KG/DY MG/KG/DY MG/KG/DY MG/KG/DY ____________________________________________________________________________________________________________________________________ DISPOSITION SUMMARY Animals Initially in Study 50 50 50 50 50 Early Deaths Moribund Sacrifice 4 6 3 6 13 Natural Death 6 3 7 6 17 Accidently Killed 1 Survivors Terminal Sacrifice 39 41 40 38 18 Natural Death 2 Animals Examined Microscopically 50 50 50 50 50 ____________________________________________________________________________________________________________________________________ ALIMENTARY SYSTEM Esophagus (50) (50) (50) (50) (50) Gallbladder (44) (43) (36) (41) (38) Histiocytic Sarcoma 1 (2%) Intestine Large, Cecum (44) (47) (44) (48) (39) Carcinoma 1 (2%) Histiocytic Sarcoma 1 (2%) Serosa, Hepatoblastoma, Metastatic, Liver 1 (2%) Intestine Small, Duodenum (45) (48) (47) (47) (40) Polyp Adenomatous 1 (2%) Intestine Small, Jejunum (45) (47) (44) (47) (39) Carcinoma 1 (2%) 2 (4%) Intestine Small, Ileum (44) (49) (44) (47) (41) Histiocytic Sarcoma 1 (2%) Liver (50) (50) (50) (50) (50) Hemangiosarcoma 2 (4%) 1 (2%) 2 (4%) 14 (28%) Hemangiosarcoma, Multiple 17 (34%) Hepatoblastoma 3 (6%) 2 (4%) 1 (2%) Hepatocellular Carcinoma 7 (14%) 11 (22%) 10 (20%) 15 (30%) 3 (6%) Hepatocellular Carcinoma, Multiple 16 (32%) 10 (20%) 9 (18%) 5 (10%) Hepatocellular Adenoma 13 (26%) 10 (20%) 12 (24%) 5 (10%) Hepatocellular Adenoma, Multiple 3 (6%) 8 (16%) 2 (4%) Histiocytic Sarcoma 3 (6%) 2 (4%) 3 (6%) Leiomyosarcoma 1 (2%) Sarcoma, Metastatic, Skeletal Muscle 1 (2%) Mesentery (12) (10) (9) (14) (6) Hemangiosarcoma 1 (17%) Hemangiosarcoma, Metastatic, Liver 1 (8%) Page 8 NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE MALE 0 0.1 0.3 1.0 3.0 MG/KG/DY MG/KG/DY MG/KG/DY MG/KG/DY MG/KG/DY ____________________________________________________________________________________________________________________________________ ALIMENTARY SYSTEM - cont Hepatoblastoma, Metastatic, Liver 1 (7%) Hepatocellular Carcinoma, Metastatic, Liver 2 (14%) Histiocytic Sarcoma 2 (20%) 3 (21%) Leiomyosarcoma 1 (11%) Sarcoma, Metastatic, Skeletal Muscle 1 (17%) Pancreas (49) (50) (50) (50) (48) Hepatoblastoma, Metastatic, Liver 1 (2%) Histiocytic Sarcoma 3 (6%) 1 (2%) Leiomyosarcoma 1 (2%) Salivary Glands (50) (50) (50) (50) (50) Stomach, Forestomach (49) (50) (50) (50) (49) Leiomyosarcoma 1 (2%) Squamous Cell Papilloma 1 (2%) 1 (2%) Stomach, Glandular (47) (48) (49) (49) (46) Leiomyosarcoma 1 (2%) Tooth (24) (15) (18) (4) (4) Peridontal Tissue, Fibrosarcoma 1 (6%) ____________________________________________________________________________________________________________________________________ CARDIOVASCULAR SYSTEM Heart (50) (50) (50) (50) (50) Hepatoblastoma, Metastatic, Liver 1 (2%) Histiocytic Sarcoma 1 (2%) ____________________________________________________________________________________________________________________________________ ENDOCRINE SYSTEM Adrenal Cortex (49) (49) (50) (50) (49) Adenoma 1 (2%) 1 (2%) 1 (2%) Adenoma, Multiple 1 (2%) Carcinoma 1 (2%) Hepatoblastoma, Metastatic, Liver 1 (2%) Histiocytic Sarcoma 1 (2%) 1 (2%) Capsule, Adenoma 3 (6%) 7 (14%) 3 (6%) 1 (2%) 1 (2%) Capsule, Leiomyosarcoma 1 (2%) Adrenal Medulla (49) (49) (49) (50) (48) Pheochromocytoma Malignant 1 (2%) Pheochromocytoma Benign 1 (2%) Islets, Pancreatic (49) (50) (50) (50) (48) Adenoma 3 (6%) Pituitary Gland (49) (47) (48) (46) (47) Pars Distalis, Adenoma 1 (2%) 1 (2%) Page 9 NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE MALE 0 0.1 0.3 1.0 3.0 MG/KG/DY MG/KG/DY MG/KG/DY MG/KG/DY MG/KG/DY ____________________________________________________________________________________________________________________________________ ENDOCRINE SYSTEM - cont Pars Intermedia, Adenoma 1 (2%) Thyroid Gland (49) (50) (49) (50) (50) Follicular Cell, Adenoma 2 (4%) 2 (4%) 1 (2%) ____________________________________________________________________________________________________________________________________ GENERAL BODY SYSTEM Tissue NOS (2) (1) (1) ____________________________________________________________________________________________________________________________________ GENITAL SYSTEM Coagulating Gland (1) Histiocytic Sarcoma 1 (100%) Epididymis (50) (50) (50) (50) (50) Hemangiosarcoma 1 (2%) Histiocytic Sarcoma 1 (2%) Preputial Gland (50) (50) (50) (50) (50) Adenoma 1 (2%) Prostate (50) (50) (50) (50) (50) Histiocytic Sarcoma 1 (2%) Testes (50) (50) (50) (50) (50) Interstitial Cell, Adenoma 2 (4%) ____________________________________________________________________________________________________________________________________ HEMATOPOIETIC SYSTEM Bone Marrow (50) (50) (50) (50) (50) Hemangiosarcoma 1 (2%) 1 (2%) Histiocytic Sarcoma 2 (4%) Sarcoma 1 (2%) Lymph Node (2) (3) (4) (7) (4) Bronchial, Alveolar/Bronchiolar Carcinoma, Metastatic, Lung 1 (25%) Bronchial, Hepatoblastoma, Metastatic, Liver 1 (14%) Inguinal, Histiocytic Sarcoma 1 (33%) Mediastinal, Histiocytic Sarcoma 2 (67%) 1 (14%) Renal, Histiocytic Sarcoma 2 (67%) 1 (14%) Lymph Node, Mandibular (49) (48) (49) (49) (44) Histiocytic Sarcoma 1 (2%) Lymph Node, Mesenteric (49) (48) (48) (50) (50) Hemangiosarcoma 1 (2%) Hepatoblastoma, Metastatic, Liver 1 (2%) Page 10 NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE MALE 0 0.1 0.3 1.0 3.0 MG/KG/DY MG/KG/DY MG/KG/DY MG/KG/DY MG/KG/DY ____________________________________________________________________________________________________________________________________ HEMATOPOIETIC SYSTEM - cont Histiocytic Sarcoma 3 (6%) 4 (8%) Leiomyosarcoma 1 (2%) Spleen (49) (49) (50) (50) (49) Hemangiosarcoma 1 (2%) 3 (6%) 1 (2%) 2 (4%) Histiocytic Sarcoma 2 (4%) 1 (2%) 2 (4%) Thymus (42) (46) (45) (43) (43) Histiocytic Sarcoma 1 (2%) 1 (2%) ____________________________________________________________________________________________________________________________________ INTEGUMENTARY SYSTEM Skin (50) (50) (50) (50) (49) Subcutaneous Tissue, Fibrosarcoma, Multiple 1 (2%) Subcutaneous Tissue, Sarcoma 1 (2%) Subcutaneous Tissue, Sarcoma, Metastatic, Skeletal Muscle 1 (2%) ____________________________________________________________________________________________________________________________________ MUSCULOSKELETAL SYSTEM Skeletal Muscle (2) (1) Hemangiosarcoma 1 (50%) Sarcoma, Multiple 1 (100%) ____________________________________________________________________________________________________________________________________ NERVOUS SYSTEM Brain (50) (50) (50) (50) (50) Meninges, Histiocytic Sarcoma 1 (2%) ____________________________________________________________________________________________________________________________________ RESPIRATORY SYSTEM Lung (50) (50) (50) (50) (50) Alveolar/Bronchiolar Adenoma 8 (16%) 9 (18%) 10 (20%) 5 (10%) 12 (24%) Alveolar/Bronchiolar Adenoma, Multiple 4 (8%) 1 (2%) 1 (2%) 3 (6%) Alveolar/Bronchiolar Carcinoma 3 (6%) 6 (12%) 2 (4%) 1 (2%) Alveolar/Bronchiolar Carcinoma, Multiple 4 (8%) 2 (4%) 4 (8%) 1 (2%) 4 (8%) Carcinoma, Metastatic, Harderian Gland 2 (4%) Carcinoma, Metastatic, Uncertain Primary Site 1 (2%) Fibrosarcoma, Metastatic, Uncertain Primary Site 1 (2%) Hemangiosarcoma, Metastatic, Liver 1 (2%) 5 (10%) Page 11 NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE MALE 0 0.1 0.3 1.0 3.0 MG/KG/DY MG/KG/DY MG/KG/DY MG/KG/DY MG/KG/DY ____________________________________________________________________________________________________________________________________ RESPIRATORY SYSTEM - cont Hepatoblastoma, Metastatic, Liver 1 (2%) Hepatocellular Carcinoma, Metastatic, Liver 6 (12%) 6 (12%) 4 (8%) 8 (16%) Histiocytic Sarcoma 2 (4%) 1 (2%) 2 (4%) Sarcoma, Metastatic, Skeletal Muscle 1 (2%) Mediastinum, Histiocytic Sarcoma 1 (2%) 1 (2%) Nose (50) (50) (50) (50) (50) Histiocytic Sarcoma 1 (2%) ____________________________________________________________________________________________________________________________________ SPECIAL SENSES SYSTEM Harderian Gland (6) (1) (7) (8) (3) Adenoma 4 (67%) 1 (100%) 6 (86%) 8 (100%) 2 (67%) Carcinoma 2 (33%) 1 (14%) 1 (13%) 1 (33%) ____________________________________________________________________________________________________________________________________ URINARY SYSTEM Kidney (49) (49) (50) (50) (50) Carcinoma 1 (2%) Hepatoblastoma, Metastatic, Liver 1 (2%) Hepatocellular Carcinoma, Metastatic, Liver 1 (2%) Histiocytic Sarcoma 1 (2%) 1 (2%) 4 (8%) Capsule, Hemangiosarcoma 1 (2%) Renal Tubule, Adenoma 1 (2%) Urinary Bladder (50) (50) (50) (50) (50) ____________________________________________________________________________________________________________________________________ SYSTEMIC LESIONS Multiple Organs *(50) *(50) *(50) *(50) *(50) Histiocytic Sarcoma 3 (6%) 3 (6%) 4 (8%) Lymphoma Malignant 3 (6%) 2 (4%) 1 (2%) 3 (6%) 2 (4%) ____________________________________________________________________________________________________________________________________ * Number of animals with any tissue examined microscopically Page 12 NTP Experiment-Test: 05161-06 INCIDENCE RATES OF NEOPLASMS BY ANATOMIC SITE (SYSTEMIC LESIONS ABRIDGED) (a) Report: PEIRPT05 Study Type: CHRONIC RIDDELLIINE Date: 11/30/00 Route: GAVAGE Time: 08:16:00 ____________________________________________________________________________________________________________________________________ B6C3F1 MICE MALE 0 0.1 0.3 1.0 3.0 MG/KG/DY MG/KG/DY MG/KG/DY MG/KG/DY MG/KG/DY ____________________________________________________________________________________________________________________________________ TUMOR SUMMARY Total Animals with Primary Neoplasms (b) 44 45 47 42 47 Total Primary Neoplasms 85 79 82 64 69 Total Animals with Benign Neoplasms 32 27 28 23 17 Total Benign Neoplasms 42 39 37 27 20 Total Animals with Malignant Neoplasms 29 31 30 33 41 Total Malignant Neoplasms 43 40 45 37 49 Total Animals with Metastatic Neoplasms 8 6 5 10 7 Total Metastatic Neoplasm 10 6 5 20 11 Total Animals with Malignant Neoplasms 1 1 Uncertain Primary Site Total Animals with Neoplasms Uncertain- Benign or Malignant Total Uncertain Neoplasms ____________________________________________________________________________________________________________________________________ a Number of animals examined microscopically at site and number of animals with lesion b Primary tumors: all tumors except metastatic tumors Page 13 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