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Year : 2022  |  Volume : 28  |  Issue : 1  |  Page : 79-82

A study to determine the incidence of coexisting carcinoma In situ in mastectomy specimens with invasive breast carcinoma

1 Department of General Surgery, GG Hospital, Thiruvananthapuram, Kerala, India
2 Department of General Surgery, Amala Institute of Medical Sciences, Thrissur, Kerala, India

Correspondence Address:
Dr. Bineesh Prakash
GG Hospital, Murinjapalam, Thiruvananthapuram - 695 011, Kerala
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ksj.ksj_8_22

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Background: In situ breast carcinoma is a pre-invasive cancer that has not breached the epithelial basement membrane. This was previously a rare but is becoming increasingly common. It may be ductal carcinoma in situ (DCIS) or lobular carcinoma in situ (LCIS). DCIS is a precursor of invasive carcinoma, whereas LCIS is not a precursor but only a predictor of invasive carcinoma. In those with LCIS, 50% of the carcinomas occur in the contralateral breast. Aim: This paper aims to study the incidence of DCIS and LCIS in mastectomy specimens of invasive carcinoma breast. Materials and Methods: This is a subjective study of 226 patients in a tertiary care hospital over a period of 18 months. Patients with invasive breast carcinoma undergoing mastectomy were included. Patients with invasive breast carcinoma and those who have undergone any breast surgeries in the past were excluded. The histopathology reports were analysed for finding out DCIS and LCIS coexisting with invasive carcinoma of the breast. Results: The patients had a mean age of 56–11.025 years. 59.7% were in the 41–60-year age group. DCIS coexisted with invasive carcinoma in 28.3% (64). LCIS was absent in all cases of invasive carcinoma. Amongst those with DCIS, high-grade DCIS was found in 65.6% (42) and low-grade DCIS in 34.4% (22). Amongst the DCIS group, comedo type was present in 46.9% (30), followed by cribriform type 31.2% (20), solid type 18.8% (12) and papillary type 3.1% (2). Conclusion: DCIS was found to coexist with invasive carcinoma in 28.3% of cases, whereas LCIS was absent in all cases of invasive carcinoma.

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