Case report: Management of infiltrative basosquamous carcinoma of the sternum

Successful reconstruction using three flaps combination after wide excision due to basosquamous carcinoma: A case report

INTRODUCTION

Basosquamous carcinoma (BSC) is an uncommon and malignant subtype of non-melanoma skin cancer. It has features that are halfway between basal cell carcinoma (BCC) and squamous cell carcinoma (SCC).

CASE PRESENTATION

An 87-year-old female presented with a lesion on her left cheek, nasal ala, medial canthal area, and eyelids. After investigations, which included biopsies and a computed tomography scan (CT), surgery was decided upon to completely remove the mass. A 5 × 4 cm defect after the surgery was reconstructed by mobilizing three flaps, including the McGregor flap, VY glabellar flap, and nasolabial laterally based cheek flap. The excisional biopsy detected malignancy at the lateral border of the upper lid, which led to the patient undergoing surgery to remove the tumor formation. After the second surgery, the histopathology confirmed no malignancy. The patient had functionally and aesthetically pleasing results, preserved eyelid movement and visual field. No surgical complications or recurrences occurred within the first year after the surgery.

DISCUSSION

BSC is a neoplasm without well-defined histologic characteristics or standardized treatment procedures compared to other non-melanoma skin cancers. However, several studies recommend using wide excision. In our case, Reconstructing the area was challenging due to important anatomical structures and finding tissue that matches the desired appearance, while preserving functional and aesthetic results.

CONCLUSION

In this case report, we highlight the value of reconstructing face defects after wide excision due to BSC using three flaps.

Sternum Metastases: From Case-Identifying Strategy to Multidisciplinary Management

We aimed to overview the most recent data on sternal metastases from a multidisciplinary approach (diagnosis strategies, outcome, and histological reports). This narrative review based on a PubMed search (between January 2020 and 22 July 2023) using key words such as "sternal", "manubrium", and "metastasis" within the title and/or abstract only included original papers that specifically addressed secondary sternal spreading of cancer in adults, for a total of 48 original articles (14 studies and 34 single case reports). A prior unpublished case in point is also introduced (percutaneous incisional biopsy was used to address a 10 cm sternal tumour upon first admission on an apparently healthy male). The studies (n = 14) may be classified into one of three groups: studies addressing the incidence of bone metastases (including sternum) amid different primary cancers, such as prostate cancer (N = 122 with bone metastases, 83% of them with chest wall metastases), head and neck cancers (N = 3620, 0.8% with bone metastases, and 10.34% of this subgroup with sternum involvement); and glioblastoma (N = 92 with bone metastases, 37% of them with non-vertebral metastases, including the sternum); assessment cohorts, including breast cancer (N = 410; accuracy and sensitivity of PET/CT vs. bone scintigraphy is superior with concern to sternum spreading) and bone metastases of unknown origin (N = 83, including a subgroup with sternum metastases; some features of PET/CT help the differentiation with multiple myeloma); and cohorts with various therapeutic approaches, such as palliative arterial embolization (N = 10), thymic neuroendocrine neoplasia (1/5 detected with sternum metastases), survival rates for sternum metastases vs. non-sternum chest wall involvement (N = 87), oligo-metastatic (sternal) breast cancer (3 studies, N = 16 for all of them), oligo-metastatic head and neck cancer (N = 81), conformal radiotherapy (N = 24,215, including an analysis on sternum spreading), and EBRT followed by MR-HIFU (N = 6). Core data coming from the isolated case reports (N = 34) showed a female to male ratio of 1.6; the females' ages were between 34 and 80 (mean of 57.28) and the males' ages varied between 33 and 79 (average of 58.78) years. The originating tumour profile revealed that the most frequent types were mammary (N = 8, all females) and thyroid (N = 9, both women and men), followed by bladder (N = 3), lung (N = 2), and kidney (N = 2). There was also one case for each of the following: adenoid cystic carcinoma of the jaw, malignant melanoma, caecum MiNEN, a brain and an extracranial meningioma, tongue carcinoma, cholangiocarcinoma, osteosarcoma, and hepatocellular carcinoma. To our knowledge, this is the most complex and the largest analysis of prior published data within the time frame of our methods. These data open up new perspectives of this intricate, dynamic, and challenging domain of sternum metastases. Awareness is a mandatory factor since the patients may have a complex multidisciplinary medical and/or surgical background or they are admitted for the first time with this condition; thus, the convolute puzzle will start from this newly detected sternal lump. Abbreviations: N = number of patients; n = number of studies; PET/CT = positron emission tomography/computed tomography; EVRT = external beam radiotherapy; MR-HIFU = magnetic resonance-guided high-intensity focused ultrasound; MiNEN = mixed neuroendocrine-non-neuroendocrine tumour.