The underlying case is a medical malpractice action. Willie Mae David (Appellant) appeals the trial court’s order granting *323summary judgment in favor of Respondents.1 This case was certified from the court of appeals pursuant to Rule 204(b), SCACR. Because Respondents have filed three separate briefs, we recognize that some issues may not apply to all of the Respondents. Nevertheless, we affirm the trial court’s order as to all Respondents.
Factual/Procedural Background
Appellant’s family doctor found a lesion on the lower lobe of Appellant’s left lung. Appellant was referred to Pee Dee Cardiovascular Surgeons for evaluation and then admitted to McLeod Regional Medical Center on March 3, 1998, to undergo a biopsy and possible surgery to extract the lesion.
During the biopsy, Dr. Ken Brusett extracted a sample of the lesion for testing.2 Dr. H.K. Habermeier, a pathologist, examined the sample and provided an intra-operative preliminary diagnosis of “probable pulmonary blastema,” which is a rare form of lung cancer. As a result of this preliminary diagnosis, Dr. Brusett decided to remove the lower lobe of Appellant’s left lung while Appellant was still anesthetized and unconscious. A final pathology report, issued three days after the surgery, concluded that the lesion was not cancerous, but rather, pulmonary endometrioma.3
Appellant filed an action alleging medical malpractice, claiming that she suffers from several ailments as a result of the surgery, including chest and back pain, shortness of breath, and anxiety.
Appellant named the following parties as defendants: (1) the hospital where the surgery took place (McLeod Regional Medical Center); (2) the thoracic surgeon who conducted the surgery (Dr. Brusett); (3) Dr. Brusett’s practice group (Pee Dee Cardiovascular Surgeons); (4) the pathologist who provid*324ed the preliminary diagnosis of “probable pulmonary blastema” (Dr. Habermeier); and (5) Dr. Habermeier’s practice group (Pee Dee Pathology).
Respondents made three separate motions for summary judgment,4 which the trial judge granted in favor of Respondents. Appellant now raises the following issues for review:
I. Did the trial court err in granting Respondents’ motions for summary judgment?
II. Did the trial court err in holding that McLeod Regional Medical Center was not vicariously liable for Appellant’s alleged damages?
Law/Analysis
I. Summary Judgment
Appellant argues that the trial court erred in granting summary judgment in favor of Respondents.5 We disagree.
When reviewing an order granting summary judgment, the appellate court applies the same standard applied by the trial court. Fleming v. Rose, 350 S.C. 488, 493, 567 S.E.2d 857, 860 (2002). Summary judgment is appropriate when there is no genuine issue of material fact such that the moving party must prevail as a matter of law. Rule 56(c), SCRCP. *325In determining whether any triable issues of fact exist, the court must view the evidence and all reasonable inferences that may be drawn from the evidence in the light most favorable to the non-moving party. Fleming v. Rose, 350 S.C. 488, 493-494, 567 S.E.2d 857, 860 (2002).
As the trial court recognized, the rules of civil procedure dictate whether or not an affidavit establishes an issue of fact sufficient to defeat a motion for summary judgment. Rule 56(e), SCRCP provides that “supporting and opposing affidavits shall be made on personal knowledge, shall set forth such facts as would be admissible in evidence, and shall show affirmatively that the affiant is competent to testify as to matters stated therein.” Rule 56(e), SCRCP.
In a medical malpractice action, a plaintiff must provide the following to establish an issue of fact:
(1) the generally recognized and accepted practices and procedures that would be followed by average, competent practitioners in the defendants’ field of medicine under the same or similar circumstances; and (2) the defendants departed from the recognized and generally accepted standards.
Pederson v. Gould, 288 S.C. 141, 143-44, 341 S.E.2d 633, 634 (1986); Cox v. Lund, 286 S.C. 410, 414, 334 S.E.2d 116, 118 (1985). In addition, the plaintiff must show that the defendants’ departure from such generally recognized practices and procedures was the proximate cause of the plaintiffs alleged injuries and damages. Green v. Lilliewood, 272 S.C. 186, 193, 249 S.E.2d 910, 913 (1978).
A physician commits malpractice by not exercising that degree of skill and learning that is ordinarily possessed and exercised by members of the profession in good standing acting in the same or similar circumstances. Durham v. Vinson, 360 S.C. 639, 650-51, 602 S.E.2d 760, 766 (2004). To create a question of fact in a medical malpractice case, the plaintiff must provide expert testimony to establish both the required standard of care and the defendant’s failure to conform to that standard, unless the subject matter lies within the ambit of common knowledge, so that no special learning is required to evaluate the conduct of the defendant. Pederson, 288 S.C. at 143, 341 S.E.2d at 634.
*326In the present case, Appellant relies solely on the affidavit of pathologist Dr. Brian Frist as creating a genuine issue of material fact.6 The trial court ruled that Dr. Frist’s affidavit failed to establish that he is familiar with the standard of care from which the Respondents allegedly deviated. We agree.
We hold that the trial court properly found Dr. Frist’s affidavit did not create a question of fact as to the alleged malpractice of Dr. Brusett and Pee Dee Cardiovascular. In his affidavit, Dr. Frist’s sole opinion as to Dr. Brusett’s alleged malpractice is that Dr. Brusett failed “to make sure that he communicated to the pathologist his thoughts for treatment, so that the pathologist was aware of the treatment plan of the surgeon.”
First, Dr. Frist incorrectly relies on the assumption that the pathologist would have diagnosed Appellant’s tumor differently had Dr. Brusett “communicated his thoughts for treatment” before Appellant’s tumor was tested. Dr. Frist’s affidavit fails to explain how Brusett’s post-diagnosis treatment would have affected the pathologist’s initial diagnosis of the tumor. As a result, there is no evidence that Dr. Brusett’s failure to communicate Appellant’s possible treatment options with the pathologist was the proximate cause of Appellant’s injuries. The dissent asserts that had the pathologist been aware that Dr. Brussett intended to immediately remove the affected portion of the lung upon a diagnosis of pulmonary blastoma, then the pathologist might have qualified or sought to confirm his preliminary diagnosis. The dissent’s argument disregards the necessity that a surgeon be able to rely upon inter-operative diagnoses to determine a patient’s proper treatment. Moreover, the ruling argued by the dissent would set the precedent that a speculative hypothetical may serve as the standard of care in an action for medical malpractice.
Second, Appellant provides no evidence that her expert, Dr. Frist, is familiar with the standard of care that Dr. Brusett allegedly breached. Dr. Frist is a pathologist not a cardiothoracic surgeon. Nothing in Dr. Frist’s affidavit, or in the *327record, suggests it was unreasonable for Dr. Brusett to extract the lesion after receiving a diagnosis of “probable pulmonary blastema.”
Third, we find that Dr. Frist’s affidavit failed to establish that he is familiar with the standard of care that Dr. Habermeier and Pee Dee Pathology allegedly breached. According to his affidavit, Dr. Frist is board certified in anatomical and clinical pathology and is the Chief Medical Examiner for Cobb County Georgia. The affidavit, however, does not provide that Dr. Frist is familiar with the standard of care for inter-operative diagnoses. While we may infer that Dr. Frist is familiar with the standard of care a pathologist must exercise as a medical examiner, we cannot infer that every pathologist is familiar with the standard of care for every known caveat of pathology.
The dissent contends that this ruling requires that for a doctor to be qualified as an expert, the doctor must practice in the same sub-specialty as the defendant doctor. We disagree. A doctor need not practice in the particular area of medicine as the defendant doctor to be qualified to testify as an expert. Creed v. City of Columbia, 310 S.C. 342, 345, 426 S.E.2d 785, 786. (1993). However, regardless of the area in which the prospective expert witness practices, he must demonstrate to the court that he is familiar with the applicable standard of care for the medical procedure under scrutiny before he may be qualified as an expert witness. Again, despite Dr. Frist’s qualifications, his affidavit does not provide that he is familiar with the standard of care he alleges was breached. Therefore, we hold that the trial court did not err in granting summary judgment in favor of Respondents, Brusett, Pee Dee Cardiovascular, Habermeier and Pee Dee Pathology.
II. Liability of McLeod Regional Medical Center
Appellant argues that McLeod Regional Medical Center (hospital) had a nondelegable duty to provide competent pathology care to Appellant and therefore was vicariously liable for Dr. Habermeier’s preliminary misdiagnosis that resulted in unnecessary surgery. Because we hold that the trial court properly granted summary judgment in favor of Dr. Haber*328meier and Pee Dee Pathology, this issue is moot. See Rookard v. Atlanta & C. Air Line Ry. Co., 84 S.C. 190, 192, 65 S.E. 1047, 1048 (1909) (a judgment on the merits in favor of the agent is a bar to an action against the principal for the same cause because the principal’s liability is predicated upon the agent’s liability).
Conclusion
For the foregoing reasons, we affirm summary judgment in favor of Respondents.
MOORE and WALLER, JJ., concur. PLEICONES, J., dissenting in a separate opinion in which BURNETT, J., concurs.. Respondents filed three separate briefs in the following groups: (1) McLeod Regional Medical Center, (2) Dr. Brusett and Pee Dee Cardiovascular Surgeons, and (3) Dr. Habermeier and Pee Dee Pathology.
. The procedure conducted is known as a “wedge biopsy,” which requires a surgeon to actually make an incision to extract a specimen of the suspicious tissue.
. Endometrioma is the irregular growth and hardening of tissue known as the endrometrius, which usually occurs in the lining of the uterus.
. Respondents’ summary judgment motions were grouped in the same manner in which Respondents submitted briefs to this Court.
. Appellant argues that the affidavit of Dr. Frist creates an issue of fact. In the affidavit, Dr. Frist opines that the treating pathologist who diagnosed Appellant (Dr. Habermeier) and the treating surgeon (Dr. Brusett) were negligent for failure to properly communicate about Appellant’s diagnosis. Initially, Appellant named only one expert in her response to interrogatories: Dr. Hossein Tirgan, an oncologist in the state of New Jersey. Dr. Tirgan, by way of affidavit and deposition, provided an opinion that all of the Respondents were negligent in some manner. However, because Appellant does not mention any of Dr. Tirgan's expert testimony or other allegations of negligence by Dr. Frist in her brief, we must assume Appellant has abandoned her argument that these additional expert opinions provide a genuine issue of material fact for which an order granting summary judgment may be overturned. See State v. Hornsby, 326 S.C. 121, 125, 484 S.E.2d 869, 871 (1997) (holding an issue not argued in the brief is deemed abandoned and precludes consideration on appeal). Therefore, we focus solely on Dr. Frist’s affidavit to determine whether summary judgment was proper.
. Appellant named Dr. Frist as an expert only two days before the summary judgment hearing. Respondents had no opportunity to depose Dr. Frist. As a result, the only evidence that the trial court had to consider was Dr. Frist’s affidavit.