Sarcoidosis developing after COVID-19: A case report.

COVID-19 has been implicated in the development of a range of autoimmune diseases and medical consequences. Sarcoidosis is an inflammatory disease with sustained granulomatous inflammation. The possible main pathogenesis of sarcoidosis is a dysregulation between immune response and certain environmental antigens. We present a case of sarcoidosis as an interesting sequela of COVID-19. The patient was hospitalized due to SARS-CoV-2 without complication. Ten weeks after the illness, his chest computed tomography (CT) showed bilateral hilar, paratracheal and subcarinal lymph node enlargement. Endobronchial ultrasound with transbronchial needle aspiration (EBUS-TBNA) was performed; pathologic findings were that of well-formed non-necrotizing granulomas. Complete eye examination reported panuveitis and papillitis in both eyes. On the basis of these findings, sarcoidosis was diagnosed. Therefore, sarcoidosis developing after COVID-19 was suggested as a possible link between the viral infection and dysregulation of the inflammation process. However, further studies are needed to confirm this association.

Bronchogenic cyst of the floor of mouth combined with ankyloglossia: an extremely rare presentation of rare anomaly.

Bronchogenic cyst (BC), cyst lined by respiratory epithelium, is uncommon congenital anomaly of bronchial tree. Intraoral BC is extremely rare lesions. Here, we report the unusual presentation of 2-year-old boy with symptomatic cystic lesion at floor of month combined with ankyloglossia. The operation was performed under general anesthesia. Frenotomy was performed. Complete cystic removal was successful with minimal leakage of cyst wall. Sclerosing agent was injected at surgical site to prevent the residual undetected cystic malformation. Pathological examination was demonstrated a unicystic lesion lined by ciliated pseudostratified columnar and cuboidal cells. The final diagnosis was bronchogenic cyst. No postoperative complication was found. The long-term course was uneventful with no signs of recurrence at 1 year. To our best knowledge, a rare example of BC at the floor of mouth combined with ankyloglossia has never been reported.

Mammary adenoid cystic carcinoma presenting with Ductal carcinoma in situ and axillary lymph node metastasis.

Mammary adenoid cystic carcinoma (ACC) is extremely rare tumors, comprising <0.1% of all breast cancers. Moreover, lymph node metastasis is <2% of mammary ACC. Here, we report a case of 51-year-old female presented with painful mass on her left breast and left axillary lymph node enlargement. Core needle biopsy revealed invasive ductal carcinoma. Left lumpectomy and axillary lymph nodes dissections were performed. The final pathological report showed triple-negative mammary ACC arising with high grade ductal carcinoma in situ (DCIS) and axillary lymph node metastasis. Immunohistochemistry study is useful in confirming a diagnosis. Given the rarity of this cancer, natural history of disease is still not clearly understood. Complete surgical excision is the mainstay of treatment. To our best knowledge, mammary ACC presenting with DCIS and axillary lymph node metastasis has never been reported and should be considered in the differential diagnosis of breast cancers.

Primary angiosarcoma of the breast presenting with a benign vascular skin-like lesion and expanding hematoma: a case report of an extremely rare tumor.

Primary breast angiosarcoma is an extremely rare tumor type (0.05% of primary breast cancers) for which diagnosis can be difficult. They arise within the breast parenchyma and typically present as a breast mass. Here, we present the case of a 30-year-old female with spontaneous hypervascular skin on her right breast with progressive enlargement presenting as an expanding hematoma. A chest computed tomography revealed a hypervascular mass in the right breast abutting the pectoralis muscle and cystic changes within the mass. A core needle biopsy revealed an angiosarcoma. In this case study, we report a patient who, with no history of any known risk factors, presented with a benign vascular skin lesion as the first sign of angiosarcoma followed by an expanding hematoma, which is an extremely rare manifestation of the disease. Microscopic examination demonstrated a low-grade angiosarcoma on the skin, while a high-grade angiosarcoma was found in the breast parenchyma.