Can Radiological Tumour Thickness Predict Pathological Prognostic Factors in Clinicoradiologically Node-Negative Oral Squamous Carcinoma? A Prospective Study.

Background: This research investigates potential connections between radiological tumour thickness determined by CT scans and various pathological prognostic factors. These factors include pathological tumour thickness (pTT), pathological depth of invasion (DOI), and positive cervical nodal metastasis. This analysis focuses on cases of clinicoradiologically node-negative squamous cell carcinoma of the buccal mucosa. Method: Sixty-one previously untreated clinicoradiologically node-negative squamous cell carcinoma of buccal mucosa were included in the study. The radiological tumour thickness in the preoperative CT scans is correlated with other prognostic factors like pathological tumour thickness, DOI and presence or absence of neck node. Result: Sixty-one patients were included in the study with a median age of 54 years (Range 27-84). Forty-two patients (68.9%) were male, and 19 were females (31.1%). There was no statistically significant difference in mean values of rTT among patients with positive or negative post-operative nodal metastases. However, a significant correlation could be established with rTT to other potential prognostic factors. Conclusion: Tumor thickness in preoperative CT scans can be used to predict post-operative prognostic factors in oral squamous cell carcinoma.

Carcinoid ovary with synchronous carcinoid tumour of the appendix: report of a rare occurrence with review of literature.

Carcinoid tumours are present in a wide range of organs but most frequently involve the gastrointestinal tract and rarely reported in gynaecological organs. Literature reports that the prevalence of ovarian carcinoid is 0.3%-1% of ovarian neoplasms and accounts for only 5% of ovarian teratomas. The pathogenesis of neuroendocrine tumours associated with synchronous primaries is undetermined and many theories have been proposed, such as existence of a common carcinogenic effect or a common stem cell undergoing similar genetic mutation. Paracrine or autocrine growth loop effect by the secretory peptides of the neuroendocrine cell tumours is also suggested. Since carcinoids are variably positive in neuroendocrine and organ-specific markers, there are no immunohistochemistry markers to delineate the definite primary site of origin versus metastasis. We report a rare case of carcinoid ovary with synchronous carcinoid tumour of the appendix. In our case, the presence of contralateral teratomatous elements may hint primary struma carcinoid instead of being metastatic from the appendix. A strumal carcinoid component was also highlighted by PAX8 positivity. This led us to conclude the case as concurrent appendix carcinoid with struma carcinoid as two independent primaries with uncertain pathogenesis. Histologically, as both tumours are well differentiated with Ki-67 of less than 3%, the decision of the joint tumour board was to keep the patient on surveillance, with no adjuvant treatment needed. The patient is currently on surveillance and the follow-up period of 24 months to date has been uneventful.

Pelvic Exenteration for Locally Advanced Rectal Cancer: an Initial Experience from North-east India.

Pelvic exenteration is a surgery done to achieve margin negative resection in locally advanced rectal cancer infiltrating pelvic organs anterior to it. A retrospective observational study of patients undergoing pelvic exenteration for locally advanced rectal cancer was done at a single surgical unit of a tertiary care cancer centre. The period of study was from 1st January 2019 to 30th June 2021. A total of twelve patients underwent pelvic exenteration for locally advanced rectal cancer during the study period. The median duration of surgery was 310 min (range 250 to 380 min). The median duration of hospital stay was 14 days (range 12 to 30 days). Seven patients had documented postoperative complications, either major or minor, with a complication rate of 58.3%. Three patients required re-admission for complications. Two patients had COVID19 infection in the postoperative period but had uneventful recovery. Margin negative resection (R0) was achieved in eight patients (66.67%). Pelvic exenteration for locally advanced rectal cancer is a definitive surgery associated with a high morbidity rate. Supplementary Information: The online version contains supplementary material available at 10.1007/s13193-022-01529-3.

Liposarcoma of Larynx-A Case Report and Updated Review of Literature.

Liposarcomas of the larynx is an extremely rare entity, and less than 50 cases have been published in English language literature. It is a malignant mesenchymal tumour arising from adipose tissue with a very high propensity for local recurrence. Well-differentiated liposarcomas are the most common variety but are challenging to diagnose because of their resemblance with benign tumors like lipoma and other malignant soft tissue sarcomas like myxoid chondrosarcoma. Therefore, immunohistochemistry (IHC) should be considered for confirmation. Wide local excision is the treatment of choice, and post-operative radiotherapy can be considered in cases of positive resection margins not amenable for revision surgery, high tumour grade, and myxoid variant. We are reporting a case of well-differentiated liposarcoma of the left aryepiglottic fold (AEF) in a 66-year-old man who was diagnosed to have a benign lipomatous lesion in the same location 3 years back. Based on the reports of the published cases, we are presenting a management algorithm for this entity.

Sentinel Lymph Node Biopsy Using a Single-Dye Technique in a Cancer Center of North-East India: Cancer Epidemiology, Screening and diagnosis.

Background Sentinel lymph node (SLN) is the first node to receive the drainage directly from a tumor. SLN biopsy can be done in lieu of a formal lymphadenectomy in selected clinically node-negative cancers and minimizes morbidity compared with the latter. Methods This prospective study was done in patients with operable clinically node-negative breast cancer, penile cancer, and malignant melanoma of extremities in a cancer center of North-east India from January 2019 to December 2019. All the patients underwent formal lymph nodal dissection after the SLN biopsy. Besides intraoperative frozen section study of the sentinel node(s), all the specimens, including the sentinel node(s), were subjected to paraffin section histopathology. Results SLN was identified successfully in 96% of patients. Mean number of sentinel node(s) dissected was 2.3. Study of SLN biopsy with methylene blue dye for staging was done with 100% sensitivity and 95.3% specificity. The SLN procedure was able to negatively predict the drainage nodal basin in 100% with an overall accuracy of staging of 96.5%. The true-positive rate noted was 88.8%, and the false-positive rate was 4.6%. Conclusions SLN using a single-dye technique reliably identifies a sentinel node. This procedure can be safely adopted in patients with node-negative cancers as mentioned above to pathologically study the drainage basin.