Metastasis of Rectal Signet Ring Cell Carcinoma to Typical Lipoma: A Rare Presentation of the Tumor-to-Tumor Metastasis Phenomenon.

Rectal signet ring cell carcinoma represents a rare subtype of colorectal adenocarcinoma known for its aggressive biological nature and poor prognosis. Although the co-occurrence of colorectal carcinoma with other tumors has been reported, the uncommon phenomenon of tumor-to-tumor metastasis, first described in 1930, remains rare. The most frequent donor neoplasms are lung or breast carcinomas, whereas cerebral meningiomas have been reported to be the most frequent recipient neoplasms. Here we report a case of a typical lipomatous tumor harboring metastatic signet ring cell rectal carcinoma. It is about a 42-year-old man diagnosed with rectal signet ring cell carcinoma and treated with concurrent radiotherapy and chemotherapy followed by an anterior resection and manual coloanal anastomosis with a temporary ileostomy. During the surgery, an abdominal wall lipoma was discovered and excised. A histopathological examination revealed infiltration of the fibro adipose tissue by a mucinous adenocarcinoma with a contingent of signet ring cells. The patient died 12 months after adjuvant chemotherapy due to peritoneal progression. To the best of our understanding, this represents the initial documented instance of tumor-to-tumor metastasis from rectal signet cell carcinoma to a conventional nonvascular lipoma. Consequently, even if one of these tumors appears clinically and radiologically benign, it is prudent to entertain the prospect of tumor-to-tumor metastasis. Thus, a comprehensive pathologic study of both tumors is highly recommended.

Darier-Ferrand dermatofibrosarcoma protuberans of the face: Case report and literature review.

INTRODUCTION: Darier Ferrand Dermatofibrosarcoma (DFSP) is a rare skin tumor, characterized by its local aggressivity and high potential of recurrence. It affects mainly young and middle-aged adults. Its location in the head and neck region represents nearly 12.5 % of all DFSP. CASE DESCRIPTION: We report a rare case of a 68-year-old patient who was treated for a DFSP of the cheek's lower part with reconstruction using a pectoralis major musculocutaneous flap. The postoperative course was uneventful and the aesthetic result was good. DISCUSSION: DFSP is a tumor of intermediate malignancy. Its optimal management is based on complete surgical excision requiring various reconstruction procedures for large defects. The treatment of unresectable lesions remains difficult despite the targeted therapies proposed and the improvement of radiotherapy techniques. CONCLUSION: The ideal management of a DFSP is based on surgical excision passing largely in healthy tissues. This situation requires early diagnosis and is the guarantee of disease-free survival without major sequelae in head and neck locations.

Inflammatory breast cancer: As surgical oncologists, what can we do?

Breast cancer surgery is the primary treatment for early-stage breast cancer. However, inflammatory breast cancer (IBC), with its specific presentation characterized by skin invasion, is unfit for primary surgery. According to the different guidelines, the management of IBC is trimodal with the coordination of oncologists, surgeons, and radiation therapists. Advances in breast cancer imaging and the development of more targeted therapies make new challenges for this aggressive cancer. This chapter aims to provide an update on the role of surgery in IBC. Radical surgery is still considered the standard surgical treatment in IBC. Some authors suggest a conservative surgery in patients with a clinical response to chemotherapy without affecting survival. For lymph node surgery, the sentinel lymph node biopsy (SLNB) is not feasible in IBC patients, according to the existing studies. However, prospective studies on SLNB are needed to verify its reliability after chemotherapy for a specific group of patients. In the metastatic IBC, surgery can be considered if there is a good response after chemotherapy or for uncontrolled symptoms. Existing studies showed that surgery may impact survival for these patients. Prospective studies are mandatory to optimize IBC management, considering factors such as tumor's molecular profile.

A huge prolapsed cervical leiomyoma: A case report.

INTRODUCTION AND IMPORTANCE: Uterine leiomyoma is the most common pelvic tumor in women. Its cervical location is rare and may extend into the vagina in 2.5 % of cases. Treatment of cervical fibroids includes either myomectomy or hysterectomy, depending on the patient's profile and the tumor's characteristics. These fibroids challenge the surgeon because of their proximity to vital pelvic structures and their likelihood of causing surgical complications. CASE PRESENTATION: A 47-year-old woman presented with abdominopelvic pain and a bulky necrotic mass protruding out of her vagina. CT scan showed a large heterogeneous anterior mass of the cervix measuring 30 cm prolapsed in the vagina. She underwent a total hysterectomy with complete resection of the cervical mass. The histopathological report confirmed the diagnosis of a cervical leiomyoma with no signs of malignancy. CLINICAL DISCUSSION: Three types of cervical leiomyoma are known: interstitial, supra-vaginal, and polypoidal. The last one, observed in our case, is the rarest type. When prolapsed in the vagina, cervical leiomyoma can outgrow its blood supply and become necrotic. Several approaches are available for the management of cervical leiomyomas. The approach choice depends on many factors such as the tumor size and location, its extent, and the desire for fertility. CONCLUSION: This report describes the case of a large gangrenous and prolapsed non-pedunculated cervical leiomyoma which remains a rare and disabling complication of this benign tumor for which hysterectomy remains the treatment of choice.

An Aggressive Presentation of Merkel Cell Carcinoma: A Case Report.

Merkel cell carcinoma (MCC) is a rare malignant neuroendocrine tumor more common in immunosuppressed old patients. It is characterized by a high frequency of local recurrence, regional nodal metastasis, distant metastasis, and low survival rate. The diagnosis of MCC is challenging due to its rarity and can be clinically mistaken for other skin cancer. We report a case of locally advanced MCC of the left groin with aggressive behavior that was finally controlled with a combined treatment and we collected data from the literature to discuss the appropriate therapeutic algorithm for the management of this uncommon skin tumor.

Coexistence of invasive ductal breast carcinoma and fibroadenoma.

Fibroadenomas are the most common breast disease that occurs usually in young. The coexistence of an invasive ductal carcinoma and a fibroadenoma in the ipsilateral breast is extremely rare. We present the case of a 52 years woman, presented to us for an upper-outer breast lump. Breast imaging concluded to tow contiguous lesions, one of them was suspicious. She had a conservative surgery. Histology concluded to a fibroadenoma and an invasive ductal carcinoma.