Mucinous carcinoma of the breast is a well differentiated, rare histological type of invasive ductal carcinoma, seen in oldest median age (69 years). We describe a case of a 60 yr old female with large right breast mass of 10 years duration with no nodal involvement. The reasons to present this case are 1) Because of its rarity. 2) Despite having a large tumour size, the axillary lymph node is not involved, hence rendering favourable prognosis. 3) Fine needle aspiration cytology can be used as an important tool in early detection of pure mucinous carcinoma of breast. 4) Careful clinical examination should be performed when suspicious for mucinous carcinoma because lymph node metastasis changes prognosis and treatment modalities. 5) Pure mucinous carcinomas should be distinguished from mixed neoplasm, because the latter have a poorer prognosis that is most likely related to the extent of invasive carcinoma lacking extracellular mucin.

Background: Primary mucinous eccrine carcinoma (PMEC) is a quite rare malignant tumor that typically involves the head and neck region in approximately 75% of patients and the periorbital area is the most common area. Case Presentation: A 57-year-old man was seen with a painless red mass involving the left lower eyelid for the past 7 months. Examination revealed a small mass measuring 0. 6 cm with shiny red smooth appearance of the skin. H&E stained examination revealed a tumor mass that composed of polygonal cells in nests, lobules and islands separated by large amount of mucin. The neoplastic cells showed eosinophilic cytoplasm and round nuclei with mild pleomorphism. There was no necrosis, no atypical mitosis, no lymphovascular and perineural invasion. Rare mitotic figures were found. Tumoral nests present on all surgical margins. Primary MEC is a slow-growing neoplasm that may recur after incomplete surgical excision. This tumor is often clinically mistaken for other cutaneous tumors due to its variable appearance. Recurrent tumor tends to be locally invasive with a rare metastatic rate of 9. 6%. Conclusion: As a result of the recurrence risk, patients should be followed up regularly. Thus, our patient was recommended to have a regular follow-up every six months.

Mucinous carcinoma of the breast is a well-differentiated type of adenocarcinoma accounting for 2-5% of all breast cancers. Pure mucinous carcinoma of the breast has a favorable prognosis, usually seen in post-menopausal women. Neuroendocrine differentiation has been described in both in-situ and infiltrating breast cancers. Mucinous carcinomas of the breast appear to have the greatest association with neuroendocrine differentiation. Chromogranin A and synaptophysin are specific immunohisto chemical markers of neuroendocrine differentiation. Wereporta case of mucinous carcinoma of the breast with neuroendocrine differentiation in a 67-year-old female who was treated surgically in a classical manner.

Fibroadenoma is a common benign tumor observed during the second and third decades of life. Malignancy transformation in the epithelial component of a fibroadenoma is rare and can occur 20 years after its diagnosis. Mammographic findings in this phenomenon include indistinct margins and microcalcifications. Here we present a 58-year-old woman with a mobile, lateral upper quadrant mass that was rather firm when palpated. The mammography showed a lobulated mass without calcification suggestive of a benign process, most probably fibroadenoma. However the excisional biopsy contained both an intracanalicular fibroadenoma and invasive ductal carcinoma with mucinous components.

Background: Mucinous carcinoma (MC) is a rare breast malignancy with a large extracellular mucin secretion. It has a good prognosis in comparison to other breast malignancies. Case presentation: We report a 32 years old female with multiple hard palpable masses in the left breast with rapid growth in 6 months. She was mentally retarded with lower limb varicose veins associated with mucocutaneous lesions on the face. She underwent ultrasound examination of the breast, thyroid and lower extremity veins. Core needle biopsy and fine needle aspiration from left breast lesions and right thyroid nodules showed MC and follicular lesion with hurtle cell change, respectively. Suspected metastasis in the left rib and calvarium in the subsequent bone scan survey and brain magnetic resonance imaging was reported. She underwent radical mastectomy and right hemi-thyroidectomy. Conclusion: Pure mucinous carcinoma with micropapillary pattern (MUMPC) is a new histology variant of Pure Mucinous Carcinoma (PMC) that shows favorable prognosis with less aggression and occurs in older patients. However, PMC in our patient occurred at a young age with greater aggression.

Background: Mucinous breast carcinoma (MBC) is a subtype of breast cancer categorized by the presence of extracellular mucin and has more favorable prognosis than invasive carcinoma of no special type of breast cancer. The present study incorporates 27 years of practical experience from a breast disease research centerbased series of cases regarding MBC and invasive ductal carcinoma (IDC). Method: In this retrospective study, we studied the medical documents of 7, 739 patients in the Breast Disease Research Center, Shiraz University of Medical Sciences, from December 1993 to January 2019. TNM data, demographic status, pathologic stage, histological grade, hormonal receptor data, recurrence, overall survival (OS), and disease-free survival (DFS) were reviewed. We also statistically evaluated the clinical and histopathological differences of pure, mixed MBC, and IDC using SPSS, version 21. 0 (IBM, USA). P<0. 05 was considered as statistically significant. Results: A total of 78 and 31 patients were observed to have pure and mixed MBC, respectively, and 5, 774 breast cancer patients had IDC. The pure MBC group showed a lower histological grade and pathologic stage and a larger tumor size compared with mixed MBC (P<0. 001). The pure MBC patients had significantly less perinural and lymphovascular invasion and had less HER-2 positive status in comparison with IDC patients (P=0. 023). The DFS and OS did not differ the between groups. Conclusion: MBC is a rare diagnosis with a favorable prognosis due to low lymph node metastases.

Background: We aimed to analyze the prognostic impact of mucinous and non-mucinous rectal adenocarcinoma with stage II and III rectal carcinoma treated with radical surgery plus (neo) adjuvant chemoradiotherapy and evaluate disease-free (DFS) and overall survival (OS). Method: We conducted this retrospective study on patients with pathologically proven stage II/III rectal carcinoma and treated in the Department of Clinical Oncology and Nuclear Medicine, Mansoura University Hospital between January 2008 and December 2013. We designed a clinical abstract sheet and reviewed all cases in terms of history, clinical assessment, investigations done on the patients, and pathological reports including all the details, and treatment modalities, namely neoadjuvant and adjuvant. Results: The median DFS for non-mucinous adenocarcinoma (NMC) was beyond 60 months, while that for mucinous adenocarcinoma (MA) was 24 months (P=0. 008). The median OS for NMC was beyond 60 months; whereas, the mean OS of MA was 25 months (P=0. 002). Therefore, the difference between both groups was statistically significant regarding DFS and OS. Pathological subtype was the only statistically significant independent predictor in the three-year DFS. However, pathological subtype and lymph-vascular invasion were statistically significant independent predictors in the three-year OS. Conclusion: Histological subtype was an independent prognostic factor for both DFS ans OS in patients with stages II and III rectal carcinoma.