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Striated muscle in the biopsy specimen of the prostate
Author(s) -
Hasui Yoshihiro,
Shinkawa Tohru,
Osada Yukio,
Sumiyoshi Akinobu
Publication year - 1989
Publication title -
the prostate
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.295
H-Index - 123
eISSN - 1097-0045
pISSN - 0270-4137
DOI - 10.1002/pros.2990140108
Subject(s) - prostate , biopsy , medicine , prostate cancer , pathology , anatomy , capsule , immunohistochemistry , muscle biopsy , myoglobin , sphincter , cancer , biology , botany , biochemistry
We had a chance to see striated muscle fibers in the biopsy specimen of the prostate. We examined the prostate specimens of autopsied cases and biopsy specimens. The distribution of striated muscle fibers was studied with an immunohistochemical method for myoglobin to obtain their anatomical distribution in detail. We showed that the striated external sphincter muscle fibers were present in the peripheral zone of the prostatic gland (9.1%). Therefore, if striated muscle fibers are found in biopsy specimens of prostatic cancer, pathologists and urologists should not diagnose simply that the cancer invades beyond the prostatic capsule.