Introduction Ewing's sarcoma is considered to be the second most frequent primary sarcoma in children. It affects children and young adults with a male predominance. Ewing's sarcoma is usually found in the femur, humerus, ilium and tibia; and in extremely rare cases Ewing's sarcoma might affect the scapula. There are only 15 papers in PubMed database regarding scapular Ewing's sarcoma. Case presentation A 14-year-old male, with no significant medical or surgical history, presented with a swelling in the right scapular area for two months. The patient also experienced mild pain and fever. On physical examination, there was a tender mass and restriction in the right shoulder joint movements. MRI showed a large scapular mass with the characteristics of a sarcoma. The final diagnosis was made based on pathologic findings. Eventually, the patient was subjected to neoadjuvant chemotherapy. Discussion The most common tumors affecting scapula are chondrosarcoma and osteosarcoma. In a cohort study about patients diagnosed with ES between 1988 and 2018, only 29 cases were involved in the scapula. There are 12 cases of congenital ES have been reported in the medical literature, 3 of them were in the shoulder girdle. Surgery with neoadjuvant chemotherapy is considered better for total survival in ES of scapula in comparison with chemotherapy and/or radiotherapy alone. Conclusion Ewing sarcoma is extremely rare in the scapula and should be considered as a differential diagnosis for any patient with scapular tumor.

Introduction importance: Gingival squamous cell carcinoma (GSCC) is a rare neoplasm. GSCC has nonspecific features which commonly misdiagnosed with a simple toothache. Case presentation These are two cases; the first one describes a 62-year-old female who presented with pain in her right posterior mandibular teeth, and she was misdiagnosed with periodontal disease, but later histopathological tests confirmed gingival squamous cell carcinoma (GSCC). Consequently, the patient underwent surgery, and the gingival tumor was totally resected. Afterward, the patient was receiving chemotherapy, and the radiotherapy was postponed until the chemotherapy completion. The second case is of a 58-year-old female who presented with pain in her mandibular incisors, and she developed a dermal fistula on her chin and therefore underwent several gingival curettages. The following histopathologic tests confirmed GSCC so she underwent surgery, after the surgery it was planned to give her chemotherapy. Clinical discussion GSCC is a rare neoplasm with a 6% incidence of all oral malignancies. GSCC is a very challenging cancer for a physician or a pathologist to diagnose because GSCC usually mimics the characteristics of a large variety of diseases and abnormalities. Unlike oral neoplasms, GSCC has the least association with smoking. This may lead to make mistakes in the treatment or misdiagnose it until the late-stage of GSCC. Conclusion Despite the rare incidence of Gingival squamous cell carcinoma (GSCC), clinicians should consider GSCC while investigating any localized lesion with nonspecific oral symptoms.

Background Adenoid cystic carcinoma (ACC) in Bartholin’s gland is an uncommon malignant tumor. These tumors have a vague clinical feature, so they are diagnosed late and discovered at a high-level stage. Our case presented Three Recurrences and Three times Misdiagnosis of Adenoid Cystic Carcinoma (ACC). Case presentation We report a case of adenoid cystic carcinoma arising in Bartholin's gland of a 64-year-old female patient that appeared after three previous vulvar tumors were excised. The patient underwent bilateral radiotherapy which was performed on the perineum. Conclusion ACC of the vulvar sweat glands is prone to misdiagnosis and delay in both diagnosis and treatment. As seen in our case, it was misdiagnosed three times as Chondroid Syringoma. Further studies need to be conducted to better understand the tumor prognosis, and its optimal treatment options.