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Year : 2000  |  Volume : 46  |  Issue : 4  |  Page : 275-7

Cutaneous histiocytic lesions: a clinical dilemma.

Departments of General Surgery and Pathology, St. John's Medical College Hospital, Bangalore - 560 034, India. , India

Correspondence Address:
N G Lahoti
Departments of General Surgery and Pathology, St. John's Medical College Hospital, Bangalore - 560 034, India.
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Source of Support: None, Conflict of Interest: None

PMID: 11435656

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 :: Abstract 

The diagnosis of malignant histiocytosis requires a high index of clinical suspicion, awareness of its atypical features and availability of various tissue samples for morphological and special studies. The case reported here highlights the diagnostic difficulties encountered in a patient diagnosed as malignant histiocytosis who presented with cutaneous lesions in multiple foci, which included the face, groin and forearm. Only after repeated biopsies and special stains, a diagnosis of malignant histiocytosis was arrived at. Chemotherapy with CHOP regimen (cyclophosphamide, doxorubicin, vincristine and prednisone) was initiated. The response to chemotherapy was good and the patient is doing well eleven months after initial diagnosis.

Keywords: Antineoplastic Combined Chemotherapy Protocols, therapeutic use,Case Report, Cyclophosphamide, therapeutic use,Doxorubicin, therapeutic use,Facial Neoplasms, diagnosis,Forearm, Groin, Histiocytosis, Malignant, diagnosis,drug therapy,Human, Male, Middle Age, Prednisone, therapeutic use,Skin Neoplasms, diagnosis,drug therapy,Vincristine, therapeutic use,

How to cite this article:
Lahoti N G, Natarajan A, Karuna R, D'Souza R E. Cutaneous histiocytic lesions: a clinical dilemma. J Postgrad Med 2000;46:275

How to cite this URL:
Lahoti N G, Natarajan A, Karuna R, D'Souza R E. Cutaneous histiocytic lesions: a clinical dilemma. J Postgrad Med [serial online] 2000 [cited 2023 Sep 24];46:275. Available from:

In the spectrum of cutaneous histiocytic lesions, a correct diagnosis is imperative, as management differs widely between malignant histiocytosis and benign self-limiting histiocytic proliferations. The concept of malignant histiocytosis, a neoplasm of haemopoietic origin[1],[2],[3] has recently been revised and has been placed among the heterogeneous group of anaplastic large cell lymphomas (ALCL). About 10-15% of patients with malignant histiocytosis have cutaneous lesions. This case report highlights the diagnostic difficulties encountered clinically and morphologically in a patient who presented only with cutaneous manifestations.

  ::   Case history Top

A 56-year-old male presented with an ulcer of 4 months duration in the right parotid gland region, which started as a 3 x 2 cm nodule and ulcerated after being biopsied twice outside. One month later, the patient developed right facial nerve weakness. Simultaneously, discrete swellings began to appear in both inguinal regions which ulcerated spontaneously as also subcutaneous nodules of one-cm diameter in the vicinity of the groin ulcers and on the left forearm. He had a low-grade fever and non-productive cough of a month’s duration.

On examination, the firm to hard swelling in the right parotid region measured 9 x 4 cm, with an ulcer measuring 4 x 3 cm on its summit [Figure - 1]. The groin ulcers measured 5 x 4 cm [Figure - 2]. Both ulcers had sloping edges and a necrotic floor. He had no lyrnphadenopathy. The erythrocyte sedimentation rate was 45 mm/hour. Other haematological and biochemical investigations were within normal limits.

The earlier biopsies of the parotid ulcer were repeatedly reported as chronic non-specific inflammation. Fine needle aspiration cytology from the non-ulcerated part was reported as suspicious of a pleomorphic adenoma. A wedge biopsy from the groin ulcers showed marked hyperplasia of the squamous epithelium with mild atypia based on which squamous cell carcinoma was suspected, which on review was diagnosed as a pseudoepitheliomatous hyperplasia. Excision biopsies of a nodule close to the ulcer and the left forearm nodule were performed.


The epidermis was thinned out and showed ulceration. An extensive infiltrate by sheets of proliferating histiocytes was seen around the adnexal structures and blood vessels extending from superficial dermis into subcutaneous fat with a panniculitis picture. Cellular pleomorphism with moderate to abundant cytoplasm, large vesicular nuclei with indentation was observed in the neoplastic cells which were interspersed with numerous eosinophils, lymphocytes and occasional giant cells. No significant erythrophagocytosis was seen. The special stains done to rule out an infective aetiology such as Gridley methenamine silver (GMS), Periodic acid schiff (PAS) for fungi, Acid fast bacilli (AFB) stain for acid fast bacilli and Giemsa stain were negative. Immunohistochemistry performed showed focal Leukocyte common antigen (LCA) positivity and cytokeratin negativity. A diagnosis of malignant histiocytosis was made.

He underwent a right lateral tarsorraphy for prevention of exposure keratitis. After a normal bone marrow report, he was started on chemotherapy consisting of intravenous cyclophosphamide (l 100 mg), doxorubicin (70 mg), vincristine (2 mg) and oral prednisone (80 mg once daily for five days) at three weekly intervals and completed six cycles. He tolerated chemotherapy well. His ulcers in the parotid and inguinal regions have completely healed and nodules diminished in size. The last follow up was eleven months after diagnosis. At present he is on mitoxantrone (16 mg) at four weekly intervals and has been advised a total of six cycles of chemotherapy as maintenance therapy and is doing well.

  ::   Discussion Top

Malignant histiocytosis is a rare haematopoietic neoplastic disorder characterised by proliferation of abnormal histiocytes first described in 1939 by Scott and Robb-Smith.[1] The widespread proliferation of neoplastic histiocytic cells typically involves the organs of the mononuclear phagocytic system.

Marshall in 1981 reviewed 320 cases based on literature, of which 6.9% presented chiefly with cutaneous lesions.[4] These have been described on the face, scalp, chest, back and abdomen and more frequently on the extremities especially legs. Men are more often affected than women (2.2:1).[4] Laboratory investigations may reveal pancytopaenia, a raised ESR, eosinophilia, leucocytosis, altered liver function tests particularly increased aspartate aminotransferase, prolonged prothrombin time and cholestasis (in the absence of drug abuse or alcohol history).[4]

Rare cutaneous manifestations include erythematous maculo-papular eruptions, tender skin and subcutaneous nodules with central ulceration and necrosis[4] as was seen in our case. Malignant histiocytosis has been confused with large cell lymphorna,[3] undifferentiated carcinoma, Hodgkin disease and malignant fibrous histiocytoma. The morphology of the lesion in this case ruled out malignant fibrous histiocytoma. Absence of polymorphic cell population and Reed-Steinberg cell excluded Hodgkin’s disease while undifferentiated carcinoma was ruled out by cytokeratin negativity. When malignant histiocytosis involves skin, the typical topographic pattern seen in the lymph node will not be present, necessitating repeated biopsies to arrive at the diagnosis. The main diagnostic problem remained the distinction between malignant histiocytosis and lymphomas.[5] Focal LCA positivity alone cannot be the diagnostic feature of a large cell anaplastic lymphoma. The typical histopathology is a more decisive feature.[6] A wide panel of marker study is not always possible and more over histiocytes may not always be positive for such markers. Ideally to differentiate between both conditions, gene arrangement studies for beta immunoglobulins and T cell receptor have to be done. In such a scenario, a diagnosis of malignant histiocytosis was made in this case by excluding other diagnoses by morphology and special stains.

Early and aggressive chemotherapy remains the mainstay in treatment of this disorder with survival of six or more years in some studies[7],[8] while large cutaneous lesions or ulcerated lesions may be treated with radiotherapy. Cyclophosphamide, doxorubicin, vincristine and prednisone are the main chemotherapeutic agents (CHOP/ COPA regimen).[1],[7] Alternate drugs include epirubicin, bleomycin and vinblastine. Tseng et al in 1984 reported that aggressive chemotherapy with high dose methotrexate with lecuovorin yielded a five-year survival rate of 40%.[9] Weiss et al in 1986 reported a series of nine cases managed with CHOP, CHOP-Bleomycin and CVP (cyclophosphamide, vincristine, prednisolone). Three patients of their series survived for 8-10.5 years with chemotherapy.[10] Favourable prognostic signs include absence of cytopaenia, effusions and liver function abnormalities[1] including normal prothrombin time.[3] Patients who present with skin lesions in the absence of visceral abnormalities appear to have a more protracted course[1] as observed in this case.

 :: References Top

1. Ducatman BS, Wick MR, Morgan TW, Banks PM, Pierre RV. Malignant Histiocytosis: A Clinical, Histologic, and Immunohistochemical Study of 20 Cases. Hum Pathol 1984;15:368-377.   Back to cited text no. 1    
2.Goyal A, Rani S, Singh T, Choudhury P, Dubey AP. Childhood histiocytoses: A review of 22 cases. Ind Pediatr 1998;35:151-156.  Back to cited text no. 2    
3.Singh UR, Gupta K, Arora VK, Gupta S, Bhatia A. Cytomorphology of some uncommon tumours of childhood and adolescence. Indian J Pediatr 1996;63:539-547.   Back to cited text no. 3    
4.Marshall ME, Farmer ER, Trump DL. Cutaneous involvement in malignant histiocytosis. Arch Dermatol 1981;117:278-281.   Back to cited text no. 4    
5.Henry K. Neoplastic disorders of lymphoreticular tissue. In: Henry K, Symmers W St C, editors. Thymus, lymphnodes, spleen and lymphatics. Vol-7. 3rd ed. London: Churchill Livingstone; 1992. pp 851-858.  Back to cited text no. 5    
6.Bucksy P, Egeler RM. Malignant histiocytic disorders in children. Hematol Oncol Clin North Am 1998;12:465-471.   Back to cited text no. 6    
7.Alexander M, Daniels JR. Chemotherapy of malignant histiocytosis in adults. Cancer 1977;39:1011-1017.   Back to cited text no. 7    
8.Ho FC, Todd D. Malignant histiocytosis: Report of five Chinese cases. Cancer 1978;42:2450-2460.   Back to cited text no. 8    
9.Tseng A Jr, Coleman CN, Cox RS, Colby TV, Turner RR, Horning SJ, et al. The treatment of malignant histiocytosis. Blood 1984;64:48-53.  Back to cited text no. 9    
10.Weiss LM, Azzi R, Dorfman RF, Warnke RA. Sinusoidal haematolymphoid malignancy (“malignant histiocytosis”) presenting as atypical sinusoidal proliferation. Cancer 1986;58:1681-1688.   Back to cited text no. 10    


[Figure - 1], [Figure - 2]

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