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Nothing 'Gross' About it: The Work of a Pathologists' Assistant

4/13/2016

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It’s 9:05 on a Wednesday morning and a group of apron-clad pathologists' assistants (PAs) are gathering for morning rounds.

mmmThis is a daily meeting during which the pathologists, PAs, and residents meet on the floor of the gross room at the University of Rochester Medical Center.

Raman Baldzizhar, a resident doing his Surgical Pathology rotation, reads the schedule aloud for the group. He states the age and gender of each patient along with their procedure and the name of the doctor doing the surgery.

Today’s agenda includes a prostate, a pancreas, a kidney, a spleen, esophagus, and two stomachs.

After hearing the schedule, the team decides how they’ll divide up the day's work. Moments later, a colleague walks through the door carrying a frozen section specimen. It's a dark brown piece of tissue that was removed just moments ago from a patient's thyroid.

frozenThe team has to move quickly: A frozen section specimen is sent for immediate analysis while a patient is in the operating room (OR) under anesthesia. A diagnosis must be made within 20 minutes, which will help the surgeon make a decision during the procedure.

For this procedure, the tissue is literally frozen in a chamber called a cryosat. Once frozen, it is cut into extremely thin slices. A section of the tissue is placed on a glass microscope slide and stained with dye. The pathologist will examine the tissue under a microscope, render a diagnosis and report the results to the surgeon in the OR.

Each day, the PA team works against the clock; tissue specimens start to deteriorate soon after it is removed from the body and deprived of oxygen. For instance, breast tissue has a one-hour window before it must be submerged in formalin fixative to help preserve it.

The hospital’s Accessioning Unit is responsible for transporting specimens between the OR and the gross room. Technicians use an air-powered tube transport system similar to outdoor teller stations used at banks. Or, if the specimen is too large, it will be hand delivered to Surgical Pathology.

On this particular day, Dennis Dening, a PA, is examining a portion of tissue removed from a heart. I ask, What made you want to become a PA in the first place?

“I knew I wanted to do something medical, and I always enjoyed dissection,” he said, keeping his eyes fixed on the specimen.

Specimens come in all shapes and sizes. On average, the Surgical Pathology unit at URMC receives an average of nearly 500 specimens a day. They may be malignant or benign and can vary from small biopsies, such as an atypical mole removed by a dermatologist, or polyp removed during a colonoscopy. Other times, a specimen will be an entire breast or lung removed.

The PAs are responsible for dissecting and describing the specimens, in a process known as "grossing." A detailed gross examination includes information about the appearance of the specimen such as size, shape, color and consistency.

In cancer cases, the PA must identify the tumor and describe the relations of the tumor to the surrounding normal tissue. Once the gross description is completed the PA will determine what sections of the specimen will be examined microscopically by the pathologists.

ooooooooooopLaurie Baxter was hired as URMC's first PA 21 years ago and now serves as the supervisor for a team of eight full-time PAs. During her time, has seen a lot of changes in the gross room as more people have shown interest in the profession.

"Once people come here to shadow and realize this is what they want to do," she said.

Since Baxter started her career, she's seen a greater number of students choose to go into the field. She has had four employees that started as biopsy technicians and returned to school to become PA's - and expects more will follow suit in the future.

Currently there are 10 PA training programs in North America with all but one culminating in a 2-year master's degree.

“This is a pretty satisfying job,” said Baxter. “Although we never come face to face with patients, PAs play a critical role in patient care. What we describe and submit for diagnosis directly impacts future treatment options for the patient."

In addition to grossing, PAs train residents and sometimes assist in autopsy procedures. The workflow in the gross room is steady, so the team must work together productively. VVVV

Biopsy specimens have the quickest turnaround time (one to two days) but larger specimens can be more work intensive and take several days to complete.

“Every specimen represents a patient," Baxter said. “We can't ever forget that."

And don’t be fooled by the term “gross.” The human body is amazing, after all, she tells me with a laugh.

"Who says it's gross?" 

 

In photos (from top):

  1. Dennis Dening, a PA, dissects a ventricular core (a heart tissue specimen).

  2. Trista Skedel, a PA, checks dictation reports in the gross room at URMC.

  3. A frozen tissue sample that will be cut, stained, and examined under a microscope by a pathologist.

  4. Hilary Haefner, a PA, grosses a breast specimen.

  5. Elizabeth Sharratt dissects a uterus at the grossing station in Surgical Pathology at URMC.

 

Not Just Cut and Dry: A Day in the Life of a Histologist

3/7/2016

histo1
Behind many patient diagnoses is a process that starts in the operating room and ends under a microscope.  

UR Medicine Labs has a team of histotechnicians (HT) and histotechnologists (HLT), often referred to as "histotechs," who work around the clock to complete the steps leading up to patient diagnoses for cancer and other diseases.  

Histotechs are responsible for taking human tissue to prep, cut, and stain before it's examined by a pathologist. We recognize this important work in honor of Histotechnology Professionals' Day on Thursday, March 10. 

"I think most people have never heard of histology," said histotech Wally Pryjmak, who has worked at UR Medicine Labs for two years. He didn't even know what a histologist was when he became a certified medical lab technician. Nevertheless, Pryjmak wants patients to understand the link between his work and their treatment. As he says, "We create the slides your diagnosis is based on, so without us it would be a lot harder to get diagnosed." 

The tissue prep process starts after a patient has surgery to remove tissue from the body, often in a biopsy. This tissue is brought to the Surgical Pathology area (located on the ground floor of SMH) and is most often examined first by a pathologist's assistant (PA) who dissects the tissue at a grossing station.  

The tissue sample then goes into the hands of a histologist who processes it through a series of alcohols to remove any water, clears tissue in xylene and infiltrates it in paraffin wax. The tissue is then embedded into a paraffin block and the histologist cuts it into paper-thin slices.

histo2Wax slices of tissue then go into a warm water bath to stretch them out and prevent wrinkles before carefully placing the tissue onto a glass microscope slide. The histologist gently scoops the section of tissue onto the slide to dry. He or she then treats the slide with a basic stain (hematoxylin and eosin) to make the sample is easy to see under the lens. 

There are up to 75 different stains that reveal certain tissue elements, fungus, or bacteria. A pathologist can request any combination of stains be added before viewing the slide close-up. 

In this way, the histologist is part artist and part chef: they must follow a "recipe" of stains to yield a proper reading. Even a small misstep can compromise the diagnosis. Once the slide is treated with the proper stains, it goes to a pathologist who examines it and issues the diagnosis.

The work of a histologist requires careful attention to detail and physical stamina. On average, the histology team at Strong prepares between 800 and 1,200 slides each day.

histo3Diana Scott is the supervisor for histopathology at Strong. To her, the work of a histologist is like an art form. And while patients don't see or speak with the lab team helping behind the scenes, the connection is still very meaningful. 

"We care about the production side of things and the quality of the slides," said Scott. "We treat every specimen like it belongs to one of our family members waiting for their test results to come back." 

In photos:

(Top) Histologist Lisa Torregrossa embeds a tissue sample into paraffin wax. Once the wax hardens, the block can be sliced for examination. (Top right) Elizabeth Pilon uses a microtome instrument to slice a piece of human breast tissue that has been embedded in wax. 

histo4(Above right) There are more than 75 special stains used to dye tissues so they can be viewed clearly under a microscope. The stains highlight specific tissue components (nuclei, muscle, etc.) or microorganisms (bacteria, fungus) and a combination of stains is often necessary.

(Right) Tissue blocks, or cassettes, are preserved and filed for at least 20 years after a diagnosis is given. 

 

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