Medullary Thyroid Carcinoma Presenting as a Predominantly Cystic Mass on Ultrasonography: A Case Report

Most medullary thyroid carcinomas show suspicious malignant features such as hypoechogenicity, a spiculated margin and/or intranodular calcifications, which are well known features of papillary carcinoma. We report here on a case of medullary carcinoma that was seen as a predominantly cystic thyroid mass on ultrasonography. This type of case is not common in the literature and we discuss the way to diagnose a medullary thyroid carcinoma.

Malakoplakia of the Kidney Extending to the Descending Colon in a Patient with Secondary Adrenal Insufficiency: A Case Report / 가정의학회지

Malakoplakia is an uncommon but distinctive type of chronic granulomatous inflammation that occurs most commonly in the genitourinary tract, especially the urinary bladder. Most patients have associated conditions characterized by some degree of immunosuppression, as seen in solid-organ transplants, autoimmune diseases requiring steroid use, chemotherapy, chronic systemic diseases, alcohol abuse and poorly controlled diabetes. We report an unusual case of the renal malakoplakia that involved the perirenal space, extending to the descending colon in a 65-year-old Korean woman with secondary adrenal insufficiency and diabetes mellitus.

A Case Report of Kikuchi-Fujimoto Disease with Immune Thrombocytopenic Purpura / 가정의학회지

Kikuchi-Fujimoto disease (histiocytic necrotizing lymphadenitis) is a rare disease characterized by lymphadenitis with fever. It is self-limited within one to four months, and is generally diagnosed by an excisional biopsy of the affected lymph node. Kikuchi-Fujimoto disease has a wide variety of nonspecific symptoms and it is sometimes misdiagnosed as malignant lymphoma, lymph node tuberculosis, or systemic lupus erythematosus. Because clinical course and treatment of this disease differ from those of others, Kikuchi-Fujimoto disease must be included in differential diagnosis of enlarged lymph node. In this report, we discribed a case of 24-year-old male patient who visited the clinic complaining of fever, petechiae, and enlarged lymph node. He was diagnosed as Kikuchi-Fujimoto disease and immune thrombocytopenic purpura.

A Case Report of Kikuchi-Fujimoto Disease with Immune Thrombocytopenic Purpura / 가정의학회지

Kikuchi-Fujimoto disease (histiocytic necrotizing lymphadenitis) is a rare disease characterized by lymphadenitis with fever. It is self-limited within one to four months, and is generally diagnosed by an excisional biopsy of the affected lymph node. Kikuchi-Fujimoto disease has a wide variety of nonspecific symptoms and it is sometimes misdiagnosed as malignant lymphoma, lymph node tuberculosis, or systemic lupus erythematosus. Because clinical course and treatment of this disease differ from those of others, Kikuchi-Fujimoto disease must be included in differential diagnosis of enlarged lymph node. In this report, we discribed a case of 24-year-old male patient who visited the clinic complaining of fever, petechiae, and enlarged lymph node. He was diagnosed as Kikuchi-Fujimoto disease and immune thrombocytopenic purpura.

A Case Report of Anti-Neutrophil Cytoplasmic Antibodies Negative Churg-Strauss Syndrome / 가정의학회지

Churg-Strauss syndrome is a rare primary vasculitis called allergic granulomatosis angiitis. There is a substantial overlap of symptoms or signs between different vasculitides, so that a diagnosis of any vasculitis can be determined by a combination of clinical symptoms and laboratory tests. We report a case of a 54-year-old woman who had bronchial asthma, eosinophilia, peripheral polyneuropathy, pulmonary infiltrate, maxillary sinusitis, and extravascular eosinophilic infiltration on skin biopsy. So she was diagnosed as having Churg-Strauss syndrome, but she was antineutrophil cytoplasmic antibodies-negative on immunologic study. She had fever and showed cardiac involvement that was presented as cardiomegaly and pulmonary edema at chest radiography and left ventricular hypertrophy on electrocardiography. After steroid therapy, general condition and skin manifestation were rapidly improved.

A Case of Penile Cutaneous Metastasis from Gastric Carcinoma / 대한피부과학회지

Metastatic carcinoma of the penis is rare and in most cases is associated with primary malignancy of the pelvic organs with widespread metastasis. A 64-year-old man presented with a 2 month history of skin-colored papules on his penis. He also had a history of total gastrectomy and chemotherapy due to advanced gastric carcinoma. Skin biopsy from the lesion revealed atypical polygonal cells with hyperchromatic & pleomorphic nuclei in the dermis. Results of immunohistochemical staining showed a positive reaction of CK7, and a negative reaction of CK20, PSA, and CD68. We report herein a case of metastatic cancer of the penis from gastric carcinoma.

Retroperitoneal Giant Liposarcoma

Retroperitoneal liposarcoma is an infrequent, locally aggressive malignancy. We report two cases of huge retroperitoneal liposarcomas. The presence of a palpable abdominal mass was a common symptom of the two patients. Preoperative imaging study showed huge retroperitoneal tumors. Both patients underwent complete surgical resections, and a negative microscopic margin was achieved in both cases. The histopathologic diagnosis was a well-differentiated retroperitoneal liposarcoma. Neither of the two patients developed a recurring tumor during the 1.5 years of follow-up.

A Case of Langerhans Cell Histiocytosis Mimicking Periorbital Cellulitis / 소아감염

Langerhans cell histiocytosis is a rare disease in children. However, Langerhans cell histiocytosis encompasses a wide spectrum of clinical presentations and mimics other conditions. A 1-year-old boy presented with signs of periorbital cellulitis that initially responded to antibiotics, but remained as a same-sized mass with serial orbital computed tomography. The lesion was partially excised. Histopathology and immunohistochemical staining confirmed the diagnosis of Langerhans cell histiocytosis. This case demonstrates that in patients with periorbital cellulitis which has relapsed or responded inadequately to antibiotics, further investigation should initiated to rule out other inflammatory causes.

A Case of Pneumothorax Caused by Cystic Lung Metastasis of Angiosarcoma / 결핵및호흡기질환

Angiosarcoma is a rare but highly malignant tumorthat usually arises in the scalp or face of elderly males. Distant metastases favor the lung, liver, lymph nodes and skin. Metastatic pulmonary angiosarcoma commonly takes the form of a nodule but can sometimes appear as a thin-walled cyst. We report a case of 65 years-old male with a spontaneous pneumothorax, who underwent excision and radiotherapy for an angiosarcoma of the scalp 2 years ago. A chest CT scan revealed multiple cysts in the lung. The video-assisted thoracoscopic lung biopsy demonstrated subpleural cysts without tumor cells. A skin biopsy of the scalp showed an angiosarcoma. This case was diagnosed as a recurrence of an angiosarcoma with a supposed lung metastasis. This case suggests that a spontaneous pneumothorax in elderly people may be secondary to a pulmonary metastasis from an angiosarcoma of the scalp.