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Erschienen in: Breast Cancer 3/2019

11.12.2018 | Original Article

Invasive breast cancers in adolescent and young adult women show more aggressive immunohistochemical and clinical features than those in women aged 40–44 years

verfasst von: Ai Hironaka-Mitsuhashi, Hitoshi Tsuda, Masayuki Yoshida, Chikako Shimizu, Sota Asaga, Takashi Hojo, Kenji Tamura, Takayuki Kinoshita, Toshikazu Ushijima, Nobuyoshi Hiraoka, Yasuhiro Fujiwara

Erschienen in: Breast Cancer | Ausgabe 3/2019

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Abstract

Background

Limited knowledge exists concerning the clinicopathological features of breast cancers (BCs) occurring in adolescent and young adult (AYA) women. We evaluated tumor characteristics in AYA women in comparison with those in middle-aged premenopausal women.

Methods

From consecutive AYA patients (< 35-year-old) with invasive BC in a single institute, 82 patients first treated with surgery were examined. As the control group, 82 tumors from middle-aged premenopausal patients (40–44 years) were selected by matching pathological T and N factors. We compared habitual factors, immunohistochemical parameters, and patient outcome between the two groups.

Results

Most of the study population (148 of 164, 90.2%) were in the early clinical stages (stage I or II). In the AYA group, the number of childbirths was smaller (p < 0.0001), while the volume of alcohol consumption was larger (p < 0.0001), and palpable primary tumors were more frequent (p < 0.01) than in the control group. The positivities of estrogen receptor, progesterone receptor, and androgen receptor were lower (p < 0.001, p = 0.03, and p < 0.001, respectively), and the triple-negative (TN) BCs rates were higher (p < 0.01) in the AYA group. Distant recurrence-free survival (DRFS) curves were different in the whole population (p = 0.02) and in hormone receptor-positive cases (p = 0.01).

Conclusions

We confirmed that BCs occurring in AYA women had more aggressive features than those of the older premenopausal women in terms of a high proportion of TN subtypes and a lower DRFS.
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Metadaten
Titel
Invasive breast cancers in adolescent and young adult women show more aggressive immunohistochemical and clinical features than those in women aged 40–44 years
verfasst von
Ai Hironaka-Mitsuhashi
Hitoshi Tsuda
Masayuki Yoshida
Chikako Shimizu
Sota Asaga
Takashi Hojo
Kenji Tamura
Takayuki Kinoshita
Toshikazu Ushijima
Nobuyoshi Hiraoka
Yasuhiro Fujiwara
Publikationsdatum
11.12.2018
Verlag
Springer Japan
Erschienen in
Breast Cancer / Ausgabe 3/2019
Print ISSN: 1340-6868
Elektronische ISSN: 1880-4233
DOI
https://doi.org/10.1007/s12282-018-00937-0

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