David A Litman

United States
United States

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2,075 stock photos, vectors, and illustrations are available royalty-free.

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Multiple Myeloma Awareness: Bone marrow aspirate cytology of multiple myeloma, a type of bone marrow cancer of malignant plasma cells, associated with bone pain, bone  fractures and anemia.
A field irrigation sprinkler system waters rows of lettuce crops on farmland in the Salinas Valley of central California, in Monterey County, on a partly cloudy day in spring.
Multiple Myeloma Awareness: Bone marrow aspirate cytology of multiple myeloma, a type of bone marrow cancer of malignant plasma cells, associated with bone pain, bone  fractures and anemia.
Leukemia Awareness: Photomicrograph of bone marrow aspirate showing myeloblasts of acute myeloid leukemia (AML), a cancer of white blood cells.
Multiple Myeloma Awareness: Bone marrow aspirate cytology of multiple myeloma, a type of bone marrow cancer of malignant plasma cells, associated with bone pain, bone  fractures and anemia.
Lymphoma awareness: photomicrograph of a mantle cell lymphoma, a type of non-Hodgkin B-cell lymphoma.
Lymphoma of colon: photomicrograph of a diffuse large B-cell lymphoma (DLBCL) a type of non-Hodgkin lymphoma, with invasion of superficial colonic mucosa.
Multiple Myeloma Awareness: Bone marrow aspirate cytology of multiple myeloma, a type of bone marrow cancer of malignant plasma cells, associated with bone pain, bone  fractures and anemia.
Garibaldi fish (Hypsypops rubicundus), a bright orange type of damselfish, are the official marine fish of California and are protected in the local waters. The are numerous on Santa Catalina Island.
Microscopic image of a lymph node in a patient with Hodgkin's Disease (lymphoma), showing two Reed Sternberg cells in the same high power field.
Breast cancer core biopsy - ductal carcinoma in situ (DCIS) detected by screening mammography: Tumor cells are confined to the mammary ducts. There is branching and budding with no invasion present.
Prostate Cancer Awareness: Photomicrograph (microscopic image) of core biopsy of prostate gland showing histology of adenocarcinoma in patient with elevated PSA.
Fine needle aspirate cytology of metastatic melanoma, with large malignant cells.  In the center of this photomicrograph is an "intranuclear inclusion" a feature often associated with melanomas.
Microscopic of disseminated histoplasmosis, a type of fungal infection  by the fungus Histoplasma capsulatum.  Yeast forms appear as black  spherules within the cytoplasm of macrophages. GMS stain.
Microscopic image (photomicrograph) of a Merkel cell carcinoma, a highly aggressive type of skin cancer, derived from neuroendocrine cells, typically of the face, head or neck.
Photomicrograph of a lymph node in a patient with Hodgkin's Disease (lymphoma), showing a Reed Sternberg cell variant.
Photomicrograph of a neuroendocrine tumor (NET, aka carcinoid) of small intestine (ileum), with invasion of smooth muscle of bowel wall.  Spread to liver can cause symptoms of carcinoid syndrome.
Lymphoma awareness: photomicrograph of a diffuse large B-cell lymphoma (DLBCL) a type of non-Hodgkin lymphoma.  This case is from the testis of an elderly man and shows prominent nucleoli.
Malignant effusion (cancer cells): Pleural fluid cytology of lung (pulmonary) papillary adenocarcinoma, a type of non small cell carcinoma.  Pap stain.
A super bloom ("superbloom") of colorful blue and purple Sky Lupine wildflowers (Lupinus nanus) covers the ground in the hills of Monterey, California, with a with Coastal Live Oak tree in background.
Photomicrograph of liver biopsy in a patient with cirrhosis, showing bridging septal fibrosis and regenerative nodules.  Stained with trichrome to highlight fibrosis  (blue).
Microscopic image of an endoscopic gastric (stomach) biopsy showing chronic active gastritis (inflammation) due to Helicobacter pylori, a type of bacterial infectio
Leukemia Awareness: Photomicrograph of bone marrow aspirate from a patient with leukocytosis, showing blast cells of acute myeloid leukemia (AML), type M5, myelomonocytic, cancer of white blood cells.
Microscopic image of invasive squamous cell carcinoma of the vagina, related to human papilloma virus (HPV).  HPV vaccination in teens can prevent HPV infections, cervical, vaginal and vulvar cancer.
Colorful flowers are planted near a field of agricultural crops, as a field irrigation sprinkler system waters farmland in the Salinas Valley of central California, in Monterey County.
The Point Lobos State Natural Reserve, along the Monterey Bay of the central Pacific Coast of California in Carmel by the Sea, features pristine rocky coastline and trails.
Malignant effusion cytology: Microscopic image of diffuse large B-cell lymphoma, a type of non Hodgkin lymphoma.
Microscopic image (photograph) of human testis histology, with spermatozoa (sperm cells) within the epididymis.
Microscopic of small intestine with normal elongated villi, which increases surface area for absorption of nutrients. In celiac disease, the villi are flat, resulting in diarrhea (see image 764771014)

Malignant fluid cytology;  Cells of adenocarcinoma may spread to fluid of  pleural or peritoneal cavity in cancer from the breast,  lung, colon, pancreas, ovary, endometrium or other sites.  Mitosis.
Microscopic image of a gastrointestinal stromal tumor (GIST).  Malignant potential depends on size, location and mitotic activity.  Targeted therapy with Imatinib (Gleevec) may prevent recurrence.
Microscopic image (photomicrograph) of a Merkel cell carcinoma, a highly aggressive type of skin cancer, derived from neuroendocrine cells, typically of the face, head or neck.
Panoramic landscape of central California agricultural countryside with green hills (foothills), cloudy skies and a farm with cows in a pasture.
Mexican Culture Fiesta: Colorful (colourful) traditional Mexican/hispanic painted ceramic pottery Day of the Dead (Dia de los Muertos) skulls on display at a market in Mexico.
Microscopic image showing histology of a glioblastoma multiforme (GBM), a type of brain cancer.  Necrosis and vascular proliferation are diagnostic features of this high grade malignant tumor.
Ovarian Cancer Awareness: Micrograph of a serous papillary carcinoma (adenocarcinoma) of ovary, with intricately branching papillae. This tumor has a poor prognosis, as early detection is problematic.
Microscopic image of a leiomyosarcoma, a type of soft tissue sarcoma of smooth muscle.  This malignant tumor typically occurs in the uterus or GI tract, but can occur from blood vessels elsewhere.
Ovarian Cancer Awareness: Micrograph of a serous papillary carcinoma (adenocarcinoma) of ovary, with intricately branching papillae. This tumor has a poor prognosis, as early detection is problematic.
Microscopic image of biopsy obtained during colonoscopy from a patient with painful bloody diarrhea showing chronic ulcerative colitis, a type of inflammatory bowel disease (IBD).
Microscopic image of an adrenal cortical adenoma, a benign tumor of the adrenal gland, which may produce hormones cortisol or aldosterone and lead to Cushing's syndrome or primary hyperaldosteronism.
Bladder Cancer: Photomicrograph of a high grade, invasive papillary transitional (urothelial) carcinoma from a biopsy of a patient with hematuria (blood in urine) obtained during cystoscopy.
Malignant effusion: Pleural fluid pathology (cytology) of lung (pulmonary) adenocarcinoma, a type of non small cell cancer (carcinoma).  Pap stain.
The hair follicle, which resides in the dermal layer of mammalian skin, is made up of 20 different cell types, each with distinct functions.  This micrograph of a skin biopsy shows follicle histology.
A Humpback Whale pokes its head out of the water showing barnacles growing on the skin of its head, in the Monterey Bay, along the Pacific Coast of central California, during a whale watching trip.
Phogomicrograph of fine needle aspiration (FNA) cytology of a pulmonary (lung) nodule showing adenocarcinoma, a type of non small cell carcinoma.
Microscopic image (photomicrograph) of a peripheral blood smear in a patient with acute lymphoblastic leukemia (ALL) showing two blast cells (lymphoblasts).
Breast cancer histology: Lobular carcinoma in situ (LCIS) is seen in the lower left with invasive (infiltrating) lobular carcinoma in the upper right.  Screening mammography can detect early tumors.
Lung cancer - adenocarcinoma: Therapies for specific genetic mutations (biomarkers EGFR, ALK, ROS1, BRAF, PDL1, KRAS) are appropriate for selected cases.
Microscopic image of an adrenal cortical adenoma, a benign tumor of the adrenal gland, which may produce hormones cortisol or aldosterone and lead to Cushing's syndrome or primary hyperaldosteronism.
Steelhead trout are the anadromous (sea-run) form of Rainbow Trout. Like salmon, they return to fresh water tributaries to spawn. This fisherman's trophy fish is a delicacy with flaky soft pink flesh.
Papanicolaou smear (Pap test) cytology  showing cells with high grade squamous intraepithelial lesion (HSIL, severe dysplasia, CIN III), related to human papilloma virus (HPV). Vaccine available.
New Orleans, Louisiana - December 31, 2018: The Saint Louis Cemetery 1, in the French Quarter of New Orleans, is the oldest and said to be the most haunted, with above ground crypts.
Thyroid cancer: Psammoma bodies are granules of concentric layers of calcium commonly seen in papillary carcinoma  such as in this case. An intranuclear inclusion is also noted (lower right)
Microscopic image (photomicrograph) of a poorly differentiated gastric mucinous adenocarcinoma (stomach cancer), signet ring cell type, with metastasis to regional lymph node.
Salinas, California, USA - June 19, 2015: Immigrant (migrant) seasonal farm (field) workers pick and package strawberries directly into boxes in the Salinas Valley of central California.
A chair lift brings skiers to top of ski slopes of  Deer Valley Ski Resort, near Park City and The Canyons.  Host to the 2002 Winter Olympics, this mountain is a short drive from Salt Lake City..
Breast Cancer Awareness: Microscopic image (photomicrograph) of core biopsy for infiltrating (invasive) ductal carcinoma, detected by screening mammogram. H & E stain.
Microscopic image of an atypical proliferative (borderline) serous tumor of the ovary (low malignant potential) with branching papillae lined by stratified cells with nuclear atypia.
Squamous papillomas of the mouth and throat, including tongue, tonsil, uvula, hard palate, pharynx and larynx have been linked to the human papilloma virus (HPV),
Yeast Infection; Budding yeast and pseudohyphae of Candida albicans, stained with periodic acid-Schiff (PAS) stain.  This fungus commonly affects vagina and vulva, oral  (thrush) and diaper rash.
Photomicrograph of cross section human scalp showing histology of hair follicles.
Bladder Cancer: Photomicrograph of a high grade, invasive papillary transitional (urothelial) carcinoma from a biopsy of a patient with hematuria (blood in urine) obtained during cystoscopy.
Celiac disease (sprue, gluten sensitive enteropathy) is an autoimmune disorder of the small intestine with diarrhea, bloating. Normal long villi (above) vs celiac disease (below) with blunted villi.
Testicular Cancer: Photomicrograph of seminoma, a malignant germ cell tumor of the testis (testicle).  It has a survival rate of 95%
Pancreatic neuroendocrine tumors are rare tumors of the pancreas with potential for malignant behavior.  They may produce hormones such as insulin.  Normal pancreas seen in upper left corner.
Photomicrograph of collagenous colitis, a type of microscopic colitis, showing thickened subepithelial collagen.  This condition is associated with watery diarrhea.
Photomicrograph of collagenous colitis, a type of microscopic colitis, showing thickened subepithelial collagen.  This condition is associated with watery diarrhea.
Microscopic image of an endoscopic biopsy form a patient with bloating and diarrhea from celiac diseae (sprue, gluten sensitive enteropathy, showing villous blunting and intraepithelial lymphocytes.
Lettuce harvest: a rainbow of colorful (colourful) fields of summer crops (lettuce plants), including mixed green, red, purple varieties, grow in rows in Salinas Valley of Central California.
Microscopic image of an intestinal lymph node involved by metastatic colon cancer (colonic adenocarcinoma).  Screening colonoscopy can detect precancerous polyps (adenomas) and prevent colon cancer.
Sarcoidosis Awareness: Micrograph of an enlarged lymph node showing non-caseating granulomas of sarcoidosis.  The exact cause of sarcoidosis is not known, but it may be a type of autoimmune disease.
Metastatic papillary thyroid carcinoma (cancer) involving a lymph node.  A psammoma body (a granule of concentric deposits of calcium) is also noted in upper left.
Photomicrograph (microscopic image) of cervix biopsy showing low grade squamous intraepithelial lesion (LSIL, mild dysplasia, CIN 1) due to human papilloma virus (HPV).  HPV vaccine is now available.
Rainbow of colorful (colourful) fields of summer crops (lettuce plants), including mixed green, red, purple varieties, grow in rows in Salinas Valley of Central California lettuce harvest.
Fine needle aspirate (FNA) cytology of a lung tumor in a smoker showing small cell (oat cell) carcinoma, a type of lung cancer, with characteristic nuclear molding.
Photomicrograph of a carcinoid tumor, a type of neuroendocrine tumor (NET), which presented as a colon polyp during routine colonoscopy.  Spread to liver can cause symptoms of carcinoid syndrome.
Malignant fluid cytology;   Malignant cells of adenocarcinoma may spread to fluid of  pleural or peritoneal cavity in cancer from the breast,  lung, colon, pancreas, ovary, endometrium or other sites.
Micrograph of a granuloma containing spherules of Coccidiosis immitis in a patient with  coccidiomycosis, stained with PAS.  This fungus is common in the southwest United States.
Breast Cancer Awarness: Paget's Disease of the breast (nipple) is usually associated with ductal carcinoma in situ (DCIS). Malignant cells extent into epidermis of skin, giving an eczema-like rash.
Microscopic image of condyloma accuminatum, also known as a genital wart, with low grade squamous intraepithelial lesion (LSIL, mild dysplasia, CIN 1) due to human papilloma virus (HPV).
Microscopic image of cancer of the pancreas (pancreatic adenocarcinoma), left, metastatic to liver (upper right).
San Francisco, California–December 21, 2019:The sign for the hit musical Hamilton is displayed at the entrance of the Orpheum Theater.The show is about the life of founding father Alexander Hamilton.
Skin biopsy micrograph of pigmented seborrheic keratosis, a benign wart-like growth, associated with aging, with hyperkeratosis and "horn cysts".   Clinically, they appear to be "pasted on".
A school of anchovies swimming in the deep blue sea of the Pacific Ocean in Monterey Bay, California. Anchovies are commonly used as "bait fish" for fishermen.
Breast Cancer Awareness: Microscopic image (photomicrograph) of mastectomy for poorly differentiated (grade 3) infiltrating (invasive) ductal carcinoma, detected by screening mammogram. H & E stain.
Close up portrait of a seagull (Western gull, Larus occidentalis), perched on a rail at the Monterey Municipal Wharf, along the Monterey Bay of the Pacific Coast of central California.
Close up of a large green iguana (Latin name Iguana iguana) defending its territory in the south Florida keys (Key West). Iguanas are not native to Florida and are considered an invasive species.
The deep sea (undersea) Pharaoh Cuttlefish (Sepia pharaonis) can grow up to 5 kg (11 pounds).  It is a cephalopod, related to squids and octopus. Underwater photography.
Breast Cancer; lymph node metastasis: Microscopic image of cross section of a  "sentinel" axillary lymph node with invasion by metastatic infiltrating ductal carcinoma (tumor cells left).
Liver cancer awareness, core biopsy: Photomicrograph of hepatocellular carcinoma (hepatoma), a malignant tumor often associated with chronic hepatitis B.
Carmel by the Sea, California - June 9, 2019:  Large numbers of people flock to Carmel Beach during an early season heat wave.
Monterey, California - April 23, 2018: Commercial squid fishing boats work around the clock, including daylight hours, using purse seine nets as squid return to the waters of the Monterey Bay.
Los Angeles, California, USA - July 9. 2015: A group of people (students and families) get a guided tour of the University of California Los Angeles (UCLA) campus. Powell Library is in the background.
Breast Cancer Awareness: Immunohistochemistry for HER2 shows positive cell membrane staining in this infiltrating ductal carcinoma.  This patient will benefit for herceptin (trastuzumab) therapy.
Salinas, California - USA; July 1, 2015: Agricultural seasonal immigrant (migrant) field (farm) workers harvest and package (box) Romaine lettuce in the fields of Salinas Valley of central California.
Urologic Oncology, Prostate Cancer Biopsy Histology:  The smaller malignant glands of prostatic adenocarcinoma (upper left)  show invasion around and between the larger benign glands (lower right).
Mammogram Awareness: Wire guided (needle) localization of  a small breast cancer, identified by prior screening mammography.  The surgeon can locate the exact area for excisional biopsy (lumpectomy).
Sarcoidosis Awareness: Micrograph of an enlarged lymph node showing non-caseating granulomas of sarcoidosis.  The exact cause of sarcoidosis is not known, but it may be a type of autoimmune disease.
Colorful leather purses, handbags, wallets and handbags are displayed by street vendors at the outdoor Lorenzo Market, in Florence, Italy.
Microscopic (histology) of hyaline cartilage, one of three types of cartilage. This type of connective tissue is found in the nose, trachea and surfaces of joints,
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