Statistical Study on Malignant Melanoma in Japan (1961-1970)

Seiji, Makoto; Ohsumi, Takeshi

doi:10.1620/tjem.107.115

Cited by 24 publications

(7 citation statements)

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“…1) shows the yearly incidence of melanoma between 1961 and 1976. White columns indicate the number of melanoma collected in the previous report (Seiji and Ohsumi 1972) and zebra columns the number of this report. In the previous statistics, the yearly incidence of melanoma revealed a definite upward trend every year up to 1967.…”

Section: Numbers Of Malignant Melanoma Between 1961 and 1976mentioning

confidence: 99%

Statistical Study on Malignant Melanoma in Japan (1970-1976)

Ohsumi

Seiji

1977

Tohoku J. Exp. Med.

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Section: Numbers Of Malignant Melanoma Between 1961 and 1976mentioning

confidence: 99%

Statistical Study on Malignant Melanoma in Japan (1970-1976)

Ohsumi

Seiji

1977

Tohoku J. Exp. Med.

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“…Incidence of acral melanoma has been reported to be higher among African Blacks and Japanese than Caucasoids with the sole being the most eommon site of eutaneous melanoma in Japan (Seiji & Ohsumi 1972, Gordon & Henry 1971. LM: Pagetoid nests at basal portion of epidermis and melanoeytic hyperplasia along the rete ridges.…”

Section: Clinical Featuresmentioning

confidence: 99%

Clinical and Pathological Correlation of Malignant Melanoma

Lopansri

Mihm

1979

J Cutan Pathol

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We have attempted to review virtually all forms of cutaneous and mucocutaneous melanomas. Superficial spreading, lentigo maligna and nodular melanomas have been more thoroughly investigated and documented in previous studies. Lentigo maligna melanoma appears to have a longer duration and better prognosis than SSM or NM. The overall prognosis probably correlates better with the anatomic level and thickness of invasion than with type (Clark et al. 1975, Breslow 1970, 1975). It appears that certain pitfalls exist in either method of assessing prognosis, and it is recommended that both methods be applied in evaluating a malignant melanocytic lesion when feasible. With regard to in situ melanoma or Level I melanoma, it is our experience that such lesions can achieve a 100% cure rate when completely excised. Hence, we prefer to call such lesions severely atypical melanocytic hyperplasia, and thus avoid labeling these patients with a malignant diagnosis. The most difficult histologic challenge in diagnosing a lesion of malignant melanoma is the Spitz nevus. The pathologist should never be biased by the age of the patient, for a serious mistake can arise. We have seen a case of nodular melanoma in a 13-year-old girl diagnosed as Spitz nevus only to be followed by a lymph node metastasis years later. Other examples of histologic differential diagnoses of malignant melanomas include, for example, halo nevus, soft tissue sarcoma, squamous cell carcinoma with spindle cell proliferation, Paget's disease of metastatic carcinoma, (for example, from the breast). Therefore, the approach to the diagnosis of malignant melanoma necessitates an evaluation of both clinical and pathological features. Histologic study must encompass both the pattern of growth and cellular cytologic detail for successful interpretation.

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“…The incidence of Acral melanoma was reported to be higher among African negroids and Japanese than Caucasoids with the sole being the most common site of cutaneous melanoma in Japan (6)(7)(8). The high incidence on the sole and mucous membrane in Japan might have been biased by the method of study.…”

Section: Acral Melanoma (Acral Lentiginous Melanoma) or Melanoma Ofhamentioning

confidence: 99%