Hepatosplenic T-cell lymphoma presented with massive splenomegaly and pancytopenia - a case report.

BACKGROUND: Hepatosplenic T-cell lymphoma (HSTCL) is a rare subtype of peripheral T-cell lymphoma. Patients usually present with splenomegaly and pancytopenia but without lymphadenopathy. Immunohistochemistry (IHC) staining of bone marrow biopsy shows intra-sinusoidal infiltration of CD3 and CD56 T-lymphocytes. Current treatment strategy of HSTCL includes a CHOP regimen (cyclophosphamide, adriamycine, vincristine, prednisone) followed by autologous transplantation. CASE: A 28-year-old male presented with abdominal fullness, weight loss, and massive splenomegaly. Laboratory findings revealed pancytopenia. A CT scan of the abdomen displayed hepatomegaly and massive splenomegaly. The bone marrow pathology examination showed monotonous medium-sized lymphocytes with some cluster of atypical lymphocytes with loosely condensed chromatin and pale cytoplasm. The intra-sinusoidal location was more prominent after using IHC staining of CD3 and CD56, which are characteristics of HSTCL. We administered CHOP-based regiment every 3 weeks for 3 cycles; however, the response was a stable disease. Since the splenomegaly was still massive and compromised the patient, the multidisciplinary team decided to perform splenectomy. Unfortunately, the patient did not survive the surgery. CONCLUSION: Hepatosplenic T-cell lymphoma is a rare aggressive disease, which is part of peripheral T-cell lymphoma. CHOP-based chemotherapy appeared to be ineffective, and we need further studies to find the optimal treatment of HSTCL.

Diffuse large B-cell lymphoma associated ileocecal intussusception in adulthood.

BACKGROUND: Intussusception in adults is considered a rare condition, accounting for 5% of all cases of intussusceptions and approx. 1-5% of bowel obstruction. Almost half intussusceptions of the bowel are associated with malignant disease; thus, we should also treat the underlying malignancy. CASE DESCRIPTION: A 52-year-old male presented with colicky right lower abdominal pain for a 6-month period. He had a weight loss of 20kg within 6 months. Physical examination revealed a tender right lower abdominal mass. Colonoscopy showed a mass that filled the ileocecal. The digestive surgeon performed laparoscopic right hemicolectomy with end-to-end anastomosis. Histopathology examination showed diffuse proliferation of large tumor cells with centroblastic-like features prominently in submucosal area, with normal epithelial mucosa. The immunohistochemistry result concluded the final dia-gnosis of diffuse large B-cell lymphoma. RCHOP chemotherapy regimens were administered every 3 weeks for 6 cycles. The response was complete remission. DISCUSSION: Intussusception was preoperatively dia-gnosed by multi-slice spiral CT scans with the characteristic target or sausage sign, edematous bowel wall and mesentery in the lumen. After surgery, approximately 90% of adult intussusception cases have a demonstrable etiology. Malignant lymphoma, especially diffuse large B-cell lymphoma, of the ileocecal is one cause of the adult intussusception. CONCLUSION: Adult bowel intussusception is a rare clinical entity. Abdominal CT is considered as the most sensitive imaging modality in the dia-gnosis of intussusception. Diffuse large B-cell lymphoma is the most common cause of ileocecal intussusception.