Opinion by
Judge Blatt,This is an appeal from an order of the Workmen’s Compensation Appeal Board (Board) which affirmed a referee’s award of occupational disease benefits to Gladys Marie Morris (claimant), the widow of Sargeant York McDowell (decedent).
The decedent received workmen’s compensation benefits for a disability resulting from an occupationally related lung disease contracted while in the employ of Crucible Steel, Inc. (employer), from December 2, 1974 up until the time of his death on November 22,1977. The claimant filed a fatal claim petition and, following hearings, the referee granted benefits. In doing so, he relied upon the testimony of Dr. J. D. Silverman, the claimant’s medical witness, that “the most significant cause” of the decedent’s death was silicosis with resulting complications of chronic asthmatic bronchitis and pulmonary emphysema, which resulted from the decedent’s employment in the pottery and steel industries. Because of the claimant’s subsequent *417remarriage, the award was limited to 71 weeks. The Board affirmed the referee and this appeal followed..
Where the party with the burden of proof has prevailed below, our scope of review, and that of the Board, when it takes no additional evidence, is limited to determining whether or not there has been an error of law or a violation of constitutional rights and whether or not the referee’s findings of fact are supported by substantial evidence. Custom Concrete Corp. v. Workmen’s Compensation Appeal Board, 52 Pa. Commonwealth Ct. 331, 415 A.2d 989 (1980).
The employer asserts that the Board erred as a matter of law in affirming the referee’s finding that silicosis with accompanying pulmonary complications was “the most significant cause” of death. It argues (1) that the characterization of silicosis as “the most significant cause ’ ’ does not satisfy the requirement of “death resulting from” an occupational disease set forth in Section 301(c) (2) of The Pennsylvania Workmen’s Compensation Act (Act), Act of June 2, 1915, P.L. 736, as amended, 77 P.S. §411(2), and (2) that the award of benefits was not supported by substantial evidence in the record.
To prevail in a fatal claim petition which alleges that death resulted from an occupational disease, the claimant must satisfy Section 301(c) (2) of the Act by demonstrating by competent medical evidence that death resulted from an occupational disease as opposed to a showing that the disease was merely a contributing factor in causing the decedent’s death. Mc-Closkey v. Workmen’s Compensation Appeal Board, 58 Pa. Commonwealth Ct. 29, 427 A.2d 288 (1981); Hauck v. Workmen’s Compensation Appeal Board, 47 Pa. Commonwealth Ct. 554, 408 A.2d 585 (1979). The fact that the decedent had been receiving disability benefits up until the time of his death is not of moment here because the mere presence of an occupational *418'.disease'-does not, per se, satisfy the causation burden that must be met by a claimant who seeks to successfully -establish that death resulted from an occupa•'tión'ál disease. Elliott v. Workmen’s Compensation Appeal Board, 57 Pa. Commonwealth Ct. 70, 425 A.2d 885 (1981); Manuel v. N. L. Industries, 50 Pa. Commonwealth Ct. 279, 412 A.2d 912 (1980). .
The claimant’s .medical witness testified that silicosis, with resulting pulmonary complications, was ■“'the'most significant cause of his death.” The physician, by his use of the superlative degree in distinguishing' silicosis from other potential causes of death, indicated that' he considered silicosis to be the primary •'cause of death,'' The words, “moat significant cause” imply direct causality as- opposed to pronouncements ■such as “major contributing factor,” Elliott, “contributed in a substantial or significant manner,” Refosco v. Workmen’s Compensation Appeal Board, 57 Pa. Commonwealth Ct. 74, 425 A.2d 887 (1981), or “contributed to and accelerated,” Manuel, all of which have •'been:-found to be insufficient to meet the direct causality' requirement of Section 301(c)(2). We belieye that the characterization made by the material witness here, however, did employ language sufficiently strong in import to meet-the standard of .causation set forth in Section 301(c) (2) of the Act.
The employer’s second argument that the findings were not -supported by substantial evidence must also fail. The employer contends that, the referee disregarded the substantial competent evidence provided by the employer’s medical witness and by the hospital records, and 'relied instead upon the incompetent evidence of the claimant’s medical .witness. Dr. Silver-man’s testimony is alleged to be incompetent because some earlier hospital records and test results had not been available to him for consideration when forrnu-lating his medical'opinion,'but he ba;sed his testimony *419upon his examination of the decedent at an earlier date1 and upon the hospital records from the decedent’s crucial final hospital admittance in November 1977. He did, therefore, review the hospital records relevant to this claim and his failure to review all extant records and test results in arriving at his opinion does not, therefore, render his testimony incompetent but goes only to the weight and credibility to be accorded it, and such determinations are within the province of the referee. Ricciardi v. Workmen’s Compensation Appeal Board, 34 Pa. Commonwealth Ct. 316, 383 A.2d 571 (1978).
The employer further asserts that ” the referee failed to give proper consideration to the November 1977 hospital records which indicated that death was due to cardiac failure and to the testimony of both parties’ medical witnesses to the same effect. It is the function of the referee to resolve conflicts in medical testimony and in so doing, he may accept or reject the testimony of any witness, including a medical witness, in whole or in part, Bowes v. Inter-Community Action, Inc., 49 Pa. Commonwealth Ct. 612, 411 A.2d 1279 (1980), and neither the Board nor this Court may disturb a referee’s resolution of conflicting medical testimony which is supported by substantial competent evidence. Katz v. Evening Bulletin, 485 Pa. 536, 403 A.2d 518 (1979). Dr. Silverman testified that upon examining the decedent, he had made a diagnosis of occupationally-related chronic asthmatic bronchitis and pulmonary emphysema resulting from “pneumoconiosis, namely silicosis.” Upon cross-examination Dr. *420Silverman, testified that, based upon his examination of the decedent and upon the November 1977 hospital records, it was his opinion that the decedent’s pulmonary condition was “the most significant cause” of death. Dr. Silverman did not, as the employer alleges, testify that he considered cardiac failure to be the cause of death, but rather merely stated that the final diagnosis as noted in the hospital records was “congestive heart failure and enlarged heart with underlying •chronic lung disease.’’' The proper test for the legal sufficiency of expert medical testimony on the issue of causation is that the expert must testify that in his professional opinion the result in question came from the cause alleged. Ricciardi. Dr. Silverman’s testimony, upon which the referee relied, that in his opinion occupationally-related silicosis was “the most significant cause” of the decedent’s death, was, therefore, sufficient to meet the standard of proof required under the Act.
We will affirm the order of the Board.
Order.
• And Now, this 24th day of March, 1982, the order of the Workmen’s Compensation Appeal Board in the above-captioned matter is affirmed;
And It Is Further Ordered That judgment be entered in favor of the claimant, Gladys Marie Morris, and against Crucible Steel, Inc., self-insured, at the rate of $106.00 per week beginning on November 22, 1977 and continuing through April 2, 1979, inclusive, a period of 71 weeks in the total amount of $7,526.00 ..with interest at the rate-of.ten percentum per annum.
All payment of compensation shall cease on April 3,1979, the date of the claimant’s remarriage.
Crucible Steel, Inc., self-insured, is directed to reimburse the claimant for funeral expenses in the amount of $750.00.
*421Crucible Steel, Inc., self-insured, is further directed to reimburse the claimant’s counsel for the following reasonable costs incurred:
Dr. J. D. Silverman report, appearance and testimony $225.00
Susan C. Thoma, Reporter
Dr. Silverman’s deposition 89.00
Jean Likar, Reporter
Dr. Shively’s deposition 18.05
East Liverpool City Hospital hospital records 27.00
Attorney fees, as agreed upon between the claimant and her counsel, in the amount, of $1,505.20 are approved and Crucible Steel, Inc., self-insured, is directed to deduct said amount, plus the $50.00 costs for a report from Dr. R. W. Beatty which was not entered into the record, from the deferred compensation due the claimant and forward it directly to the claimant’s attorneys of record.
All payments of interest and the remaining compensation in the total amount of $5,970.80 shall be paid directly to the claimant and forwarded to her by first class mail.
Judge Palladino did not participate in the decision in this case.Although not raised by the employer, we wish to note in passing that the fact that Dr. Silverman last examined the decedent in 1975 (as was also the case with the employer’s medical witness) does not destroy the competency of his testimony inasmuch as he had had . the benefit of reviewing the hospital record of the decedent’s final hospital stay when formulating his medical opinion, Saudi,