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A Case of Metaplastic Squamous Cell Carcinoma of the Breast that Showed a Pathological Complete Response After Neoadjuvant Chemotherapy with Weekly Paclitaxel
Patient: Female, 40-year-old Final Diagnosis: Squamous cell carcinoma of the breast Symptoms: A palpable tumor of the right breast Medication: — Clinical Procedure: Core needle biopsy Specialty: Oncology OBJECTIVE: Unusual or unexpected effect of treatment BACKGROUND: Primary squamous cell carcinoma...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Scientific Literature, Inc.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8765086/ https://www.ncbi.nlm.nih.gov/pubmed/35017459 http://dx.doi.org/10.12659/AJCR.935035 |
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author | Noro, Aya Ishitobi, Makoto Hanamura, Noriko Kashikura, Yumi Yamashita, Masako Kozuka, Yuji Saito, Kanako Mizuno, Toshiro Ogawa, Tomoko |
author_facet | Noro, Aya Ishitobi, Makoto Hanamura, Noriko Kashikura, Yumi Yamashita, Masako Kozuka, Yuji Saito, Kanako Mizuno, Toshiro Ogawa, Tomoko |
author_sort | Noro, Aya |
collection | PubMed |
description | Patient: Female, 40-year-old Final Diagnosis: Squamous cell carcinoma of the breast Symptoms: A palpable tumor of the right breast Medication: — Clinical Procedure: Core needle biopsy Specialty: Oncology OBJECTIVE: Unusual or unexpected effect of treatment BACKGROUND: Primary squamous cell carcinoma of the breast is a rare type of metaplastic breast carcinoma, characterized by resistance to conventional chemotherapy agents. We report a case of metaplastic squamous cell carcinoma of the breast in which a pathological complete response was achieved after neoadjuvant chemotherapy with weekly paclitaxel and in which the patient remained disease free for 15 years and 7 months. CASE REPORT: A 40-year-old woman had a palpable 5-cm-diameter tumor in the right breast that was diagnosed as meta-plastic squamous cell carcinoma of the breast based on core needle biopsy. The patient was initially treated with an adjuvant chemotherapy (AC) regimen consisting of doxorubicin (60 mg/m(2)) and cyclophosphamide (600 mg/m(2)) as neoadjuvant chemotherapy. Because the tumor grew rapidly and the skin redness increased after 1 cycle of the AC regimen, 12 cycles of weekly paclitaxel 80 mg/m(2) were subsequently administered. The tumor responded dramatically to paclitaxel. The patient underwent mastectomy with level II axillary lymph node dissection. No residual tumor cells were found, which indicated pathological complete response. The patient is currently disease free at 15 years and 7 months after the operation. CONCLUSIONS: To our knowledge, there are no previous reports of metaplastic squamous cell carcinoma of the breast in which pathological complete response was achieved by treatment with neoadjuvant chemotherapy with weekly paclitaxel (80 mg/m(2)). |
format | Online Article Text |
id | pubmed-8765086 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | International Scientific Literature, Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-87650862022-02-03 A Case of Metaplastic Squamous Cell Carcinoma of the Breast that Showed a Pathological Complete Response After Neoadjuvant Chemotherapy with Weekly Paclitaxel Noro, Aya Ishitobi, Makoto Hanamura, Noriko Kashikura, Yumi Yamashita, Masako Kozuka, Yuji Saito, Kanako Mizuno, Toshiro Ogawa, Tomoko Am J Case Rep Articles Patient: Female, 40-year-old Final Diagnosis: Squamous cell carcinoma of the breast Symptoms: A palpable tumor of the right breast Medication: — Clinical Procedure: Core needle biopsy Specialty: Oncology OBJECTIVE: Unusual or unexpected effect of treatment BACKGROUND: Primary squamous cell carcinoma of the breast is a rare type of metaplastic breast carcinoma, characterized by resistance to conventional chemotherapy agents. We report a case of metaplastic squamous cell carcinoma of the breast in which a pathological complete response was achieved after neoadjuvant chemotherapy with weekly paclitaxel and in which the patient remained disease free for 15 years and 7 months. CASE REPORT: A 40-year-old woman had a palpable 5-cm-diameter tumor in the right breast that was diagnosed as meta-plastic squamous cell carcinoma of the breast based on core needle biopsy. The patient was initially treated with an adjuvant chemotherapy (AC) regimen consisting of doxorubicin (60 mg/m(2)) and cyclophosphamide (600 mg/m(2)) as neoadjuvant chemotherapy. Because the tumor grew rapidly and the skin redness increased after 1 cycle of the AC regimen, 12 cycles of weekly paclitaxel 80 mg/m(2) were subsequently administered. The tumor responded dramatically to paclitaxel. The patient underwent mastectomy with level II axillary lymph node dissection. No residual tumor cells were found, which indicated pathological complete response. The patient is currently disease free at 15 years and 7 months after the operation. CONCLUSIONS: To our knowledge, there are no previous reports of metaplastic squamous cell carcinoma of the breast in which pathological complete response was achieved by treatment with neoadjuvant chemotherapy with weekly paclitaxel (80 mg/m(2)). International Scientific Literature, Inc. 2022-01-12 /pmc/articles/PMC8765086/ /pubmed/35017459 http://dx.doi.org/10.12659/AJCR.935035 Text en © Am J Case Rep, 2022 https://creativecommons.org/licenses/by-nc-nd/4.0/This work is licensed under Creative Common Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0 (https://creativecommons.org/licenses/by-nc-nd/4.0/) ) |
spellingShingle | Articles Noro, Aya Ishitobi, Makoto Hanamura, Noriko Kashikura, Yumi Yamashita, Masako Kozuka, Yuji Saito, Kanako Mizuno, Toshiro Ogawa, Tomoko A Case of Metaplastic Squamous Cell Carcinoma of the Breast that Showed a Pathological Complete Response After Neoadjuvant Chemotherapy with Weekly Paclitaxel |
title | A Case of Metaplastic Squamous Cell Carcinoma of the Breast that Showed a Pathological Complete Response After Neoadjuvant Chemotherapy with Weekly Paclitaxel |
title_full | A Case of Metaplastic Squamous Cell Carcinoma of the Breast that Showed a Pathological Complete Response After Neoadjuvant Chemotherapy with Weekly Paclitaxel |
title_fullStr | A Case of Metaplastic Squamous Cell Carcinoma of the Breast that Showed a Pathological Complete Response After Neoadjuvant Chemotherapy with Weekly Paclitaxel |
title_full_unstemmed | A Case of Metaplastic Squamous Cell Carcinoma of the Breast that Showed a Pathological Complete Response After Neoadjuvant Chemotherapy with Weekly Paclitaxel |
title_short | A Case of Metaplastic Squamous Cell Carcinoma of the Breast that Showed a Pathological Complete Response After Neoadjuvant Chemotherapy with Weekly Paclitaxel |
title_sort | case of metaplastic squamous cell carcinoma of the breast that showed a pathological complete response after neoadjuvant chemotherapy with weekly paclitaxel |
topic | Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8765086/ https://www.ncbi.nlm.nih.gov/pubmed/35017459 http://dx.doi.org/10.12659/AJCR.935035 |
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